BR/SUxxxUC Series
Weidmuller – Your partner in Industrial Connectivity
UL 489 and UL 1077 – AC/DC Rated
Miniature Circuit Breakers
As experienced experts we support our customers and partners around the world
with products, solutions and services in the industrial environment of power,
signal and data. We are at home in their industries and markets and know the
technological challenges of tomorrow. We are therefore continuously developing
innovative, sustainable and useful solutions for their individual needs. Together we
set standards in Industrial Connectivity.
Visit our BR/SUxxxUC Series Circuit Breakers website page for more information:
www.weidmuller.com/BRSUxxxUCSeries
Weidmuller, Canada
Weidmuller, Mexico
Weidmuller, United States
10 Spy Court
Markham, Ontario L3R 5H6
Telephone: (800) 268-4080
Facsimile: (877) 300-5635
Email: info1@weidmuller.ca
Website: www.weidmuller.ca
Blvd. Hermanos Serdán 698,
Col. San Rafael Oriente
Puebla, Puebla, Mexico
C.P. 72029
Telephone: 01 222 2686267
Facsimile: 01 222 2686219
Email: clientes@weidmuller.com.mx
Website: www.weidmuller.com.mx
821 Southlake Blvd.
Richmond, Virginia 23236
Telephone: (800) 849-9343
Facsimile: (804) 379-2593
Email: info@weidmuller.com
Website: www.weidmuller.com
www.weidmuller.com
06/17 • 3M • LIT1617
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Application Schematic
G
L1
L2
L3
Power Circuit
UL489
BR2xxUC
UL489
BR3xxUC
Power Circuit
Control Circuit
UL489
BR2xxUC
Power
Transformer
Control Transformer
UL489
BR2xxUC
UL1077
SU2xxUC
UL1077
SU1xxUC
Power
Transformer
UL489
BR1xxUC
UL489
BR1xxUC
UL489
BR3xxUC
UL1077
SU1xxUC
UL489
BR1xxUC
M
M
Outlet
Fixed mounted
cabinet /panel heater
(resistive loads)
Sizing of main branch circuit protector according
to table 430.52 in NEC®
• Dual Element (Time Delay) Fuse
Maximum fuse
= largest motor FLA x 175%
+ FLA of all other motors and general loads in group
• Inverse Time Breaker
Maximum circuit breaker = largest motor FLA x 250%
+ FLA of all other motors and general loads in group
(for other fuse/breaker types see table 430.52)
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
UL 489 and UL 1077 DIN-Rail Miniature Circuit Breakers
Weidmuller offers a complete line of thermal magnetic circuit breakers with its BRxxxUC product line engineered for either
AC or DC branch circuit protection and the SUxxxUC product line designed for supplementary protection. These circuit
breakers are proven solutions to protect your wires and cables from application or device malfunctions.
Introduction .......................................................................................................................................................... 2
Choose the Right Weidmuller BR/SUxxxUC Series Miniature Circuit Breaker ....................... 2
Applications ............................................................................................................................................ 3
BR and SU Series Product Overview ......................................................................................................... 4
UL 489 DIN-Rail Branch Circuit Breakers ................................................................................................ 5
BRxxxUC Product Selection ................................................................................................................ 6
UL 1077 DIN-Rail Supplementary Circuit Breakers ............................................................................ 7
SUxxxUC Product Selection ................................................................................................................ 8
Trip Curves ............................................................................................................................................................ 9
Accessories ....................................................................................................................................................... 11
Accessory Modules ............................................................................................................................ 11
Auxiliary Contact .......................................................................................................................... 11
Bell Alarm Contact ....................................................................................................................... 12
Shunt Trip ....................................................................................................................................... 13
Accessory Modules Installation Diagram ..................................................................................... 14
Accessory Modules Mounting Instructions ................................................................................. 15
Busbar and Busbar Accessories ....................................................................................................... 16
Busbar UL 489 – Cuttable ......................................................................................................... 16
Busbar UL 1077 – Cuttable ....................................................................................................... 18
Terms .................................................................................................................................................................... 20
Additional Technical Information ........................................................................................................... 21
Operation and Components of BR/SUxxxUC MCBs .................................................................. 21
Weidmuller UC Series Thermal Magnetic Definition ................................................................. 22
Examples of Trip Curve Interpretation – Reading Trip Curves ................................................. 23
Ambient Temperature Derating ....................................................................................................... 24
UC Series D Curve Thermal Magnetic Tripping Characteristics vs K Curve ......................... 25
Additional Weidmuller Offerings ............................................................................................................ 27
CB4200 Series Circuit Breakers ...................................................................................................... 27
1
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Introduction
Choose the Right Weidmuller BR/SUxxxUC
Series Miniature Current Breaker (MCB)
(Always refer to the NEC before installing any device.)
When considering the BR/SUxxxUC Series MCBs, always assess the application for the following: voltage rating,
maximum interrupting capacity, continuous current rating, frequency, and atypical operating conditions (ambient
temperature, moisture, vibration, altitude, installation or operation orientation, and field maintenance). The MCBs are
intended to protect the circuit cables as well as motors, generators and transformers, thyristors and silicon rectifiers.
They also provide additional protection of computers and their peripheral equipment, industrial process control systems,
telecommunications equipment and power supplies.
Ask the following:
• Is the application an AC or DC circuit?
Good news here, BR/SUxxxUC MCBs are rated for both AC
and DC.
• Is a branch or supplemental breaker needed for the
application?
Branch devices may be used in place of supplemental but
not vise versa.
• How many poles are needed for each circuit being protected?
3p – 3 phase no neutral, 2p – L1 and Neutral, 1p – L1 only.
• Calculate and/or measure the normal current for the circuit
and follow NEC guidelines. Match the breaker amps based on
the normal current load. Weidmuller’s BR/SUxxxUC run 1 to
63 amps (See Technical Data on page 4).
• Determine potential failure mode(s).
BR/SUxxxUC MCB thermal magnetic devices are designed for
interrupt short-circuit and overload events.
• What is the interrupt capacity (IC)?
Specify the breaker knowing the maximum fault current that
can be repeatedly interrupted without failure of the breaker.
BR/SUxxxUC MCBs have a maximum current at a given
voltage that the breaker can interrupt safely without damage
to surrounding components. (See Technical Data)
• What is the reaction time needed to a given fault condition?
Specify a breaker by selecting a speed that avoids nuisance
tripping but protects against component damage (B, C or
D curve)
2
• What are the functional requirements of the breaker?
The BR/SUxxxUC are rail mountable, easy to visually inspect,
switch manually (or remotely trip with shunt trip devices)
and monitor using an auxiliary contact. Mechanically 20,000
cycles and electrically 6,000 cycles.
• What is the wire size used? Can the breaker accept the wire
sizes required?
The BR/SUxxxUC are designed for ≤35mm².
• What are the environmental factors: ambient temperature,
moisture, vibration?
Check to determine if there are unusual conditions in which
the breaker must operate. The BR/SUxxxUC are specified to
IP20, -35°C ...70°C, and shock tested to IEC 60068-2-27.
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Applications
•• Automotive Manufacturing
•• Chemical, Oil and Gas
•• Renewable Energy
•• Rail Vehicles
•• Automation
•• Pharmaceutical and Food
•• Steel Production
•• Telecom and Datacom
•• Power-D-Box-Systems
•• Lighting Equipment
•• Process Control
Pharmaceutical and Food
Chemical, Oil and Gas
Automotive Manufacturing
Rail Vehicles
3
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
BR and SU Series
Description
1-, 2- and 3-pole thermal-magnetic miniature circuit breakers
(MCBs) in accordance with EN 60947-2, UL 1077 and UL
489 for DIN-rail mounting, with toggle actuation, visual status
indication and high rupture capacity. A positively trip-free snap
action mechanism ensures reliable switching behavior. A range
of trip characteristics and add-on modules allow a great variety
of applications.
BR Series UL 489 version
Typical Applications
•P
rotection of cables, motors, generators and transformers,
thyristors and silicon rectifiers.
•P
rotection of computers and their peripheral equipment,
industrial process control systems, telecommunications
equipment, power supplies.
SU Series IEC/EN60947-2 & UL 1077 version
Technical Data
Degree of protection
IP20
1-pole: AC 240 V; 1 A…63 A;
2 and 3-pole: AC 415 V, 1 A…63 A
Vibration (sinusoidal) test to
IEC 60068-2-6, test Fc
± 0.38 mm (10–57 Hz), 5 g (57–500 Hz)
10 frequency cycles per axis
1-pole: DC 80 V, 1 A...63 A
Shock, test to
IEC 60068-2-27, test Ea
30 g (11 ms)
Corrosion, test to
IEC 60068-2-11, test Ka
96 hrs in 5% salt mist
Humidity, test to
IEC 60068-2-78, test Cab
48 hours at 95% RH, temperature +40°C
Terminals
screw terminals; Vertical connection
possible by means of busbars
Tightening torque
2 Nm max.
Voltage rating and current rating range
to IEC/EN 60947-2
2-pole: (2 poles connected in series)
DC 125 V, 1...63 A
1-pole: AC 277 V; 1 A…63 A;
2 and 3-pole: AC 480Y/277 V, 1 A…63 A
to UL 1077
1-pole: DC 60 V; 1 A...63 A
2-pole (2 poles connected in series):
DC 125 V; 1 A...63 A
to UL 489
1-pole: AC 120 V; 1 A…63 A;
2 and 3-pole: AC 240 V, 1 A…63 A;
1-pole: AC 277 V; 1 A…32 A;
2 and 3-pole: AC 480Y/277 V; 1 A…32 A;
Cable cross section
≤35 mm²
Ambient temperature
-35°C...+70°C
Mounting
rail mounting
1-pole: DC 60 V; 1 A…63 A
Mass
approx. 116 g per pole
(EN 60947-2/ UL 1077)
approx. 131 g per pole
(UL 489)
2-pole (2 poles connected in series);
DC 125 V; 1 A…63 A
Typical life
Mechanically
20,000 cycles
Electrically
6,000 cycles
Approvals
Interupt capacity
to IEC/EN 60947-2 (Ics)
AC 7,500 A / DC 10,000 A
Approval
authority
Standard
Rated voltage
Current ratings
to IEC/EN 60947-2 (Icu)
AC/DC 10,000 A
TÜV
to UL 489
AC/DC 10,000 A
IEC/EN
60947-2
AC 240/415 V
DC 80 V
DC 125 V
1...63 A
1...63 A (1-pole)
1...63 A
(2 poles in series)
UL
UL 1077 /
CSA-C22.2
No. 235
AC 480Y/277 V
DC 60 V
DC 125 V
1...63 A
1...63 A (1-pole)
1...63 A
(2 poles in series)
UL
UL 489 /
CSA-C22.2
No. 5
AC 240 V
AC 480Y/277 V
DC 60 V
DC 125 V
1...63 A
1...32 A
1...63 A (1-pole)
1...63 A
(2 poles in series)
to UL1077
Number
of poles
Un
In
TC
OL
SC
1-pole
AC 240 V
1...63 A
1
1
7.5 kA, U1
1-pole
AC 277 V
1...63 A
1
0
5 kA, U1
2-, 3-pole
AC 480 V
1...63 A
1
1
5 kA, U1
1-pole
DC 60 V
1...63 A
1
0
7.5 kA, U1
2-pole in
series
DC 125 V
1...63 A
1
0
7.5 kA, U1
Insulation coordination
6 kV/3 (reinforced insulation at operating area)
For information on Weidmuller’s UL Certifications, visit
the UL Online Certifications Directory and search by the
UL file numbers E359481, E362204 and E359964.
4
1P
17.6 ± 0.2
82 max.
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
UL 489 DIN-Rail Branch
Circuit Breakers
BRxxxUC
5.5 ± 0.3
BR Series Product Selection
Part
Number 2-pole
Nomenclature
3-pole
1-pole
1
3
5
BR
3
2
D
60
3P
2P
1P
2
2
4
4
6
52.9 ± 0.6
35.3 ± 0.4
17.6 ± 0.2
49.8 ± 0.3
AC/DC Rated
Rated Amps = 1, 1.2, 1.5, 1.6, 2, 3, 4, 5, 6, 7, 8, 10,
82 max.
2
60.2 ± 0.3
0.3
UC52.99±±0.6
35.3 ± 0.4
17.6 ± 0.2
3P
2P
1P
BR = Branch Rated Circuit Breakers
45 ± 0.3
1
45 ± 0.3
1
49.8 ± 0.3
82 max.
(Part Number found on the front of the breaker)
60.2 ± 0.3
9 ± 0.3
12, 13, 15, 16, 20, 25, 30, 32, 35, 40, 50, 60, 63
No. of Poles = 1, 2 or 3
Curve = B, C or D
9 ± 0.3
52.9 ± 0.6
3P
1
1
2
2
1
3
5
4
6
4
6
3
2
4
2
2
To IEC/EN 60947-2:
Load
1
3
3
2
4
1 P 17.6 ± 0.2
5
Load
116 ± 0.4
1
Load
Load
DC Application
When using the BR/SUxxxUC in DC applications, polarity does
1
1
3
1
3
1
3
not have to be observed. Maximum acceptable voltage between
2
2
4
2
4
2
4
the conductors depends on the number of poles, circuitry and
relevant standard / approval.
Load
0 V 125 V
0V
( )
0 V 125 V
125 V
0V
( )
80 V
80 V
0V
( )
To UL 489:
1
3
4
2
4
2
3
1
0 V 125 V
0V
( )
0 V 125 V
1
2 To UL 489: 2
1
4
2
2
1
3
4
2
4
80 V
0V
( )3
80 V
4
2
4
60 V
60 V
4
2
Load
0 V 125
V
0V
( )
0 V 125 V
125 V
0V
( )
± 0.2
1 P 17.6
3P
2P
60.2 ± 0.3
60.1 ± 0.3
60.2 ±5.5
0.3 ± 0.3
52.9 ± 0.6
60.1 ± 0.3
35.3 ± 0.4
1
3
0V
( )
0V
( )
0V
( )
5.5 ± 0.3
All dimensions without tolerances are for reference only. Weidmuller
reserves the right to change specifications at any time without notice in
the interest of improved design, performance and cost effectiveness.
5.5 ± 0.3
Load
To UL 489:
80 V
80 V
3
Load
0 V 125 V
0 V 125 V
(1 )
1 V 3
1
0 V 125
3
60
2 V 4 60 V
Load
Load
2
0V
( )
Load
Load
125 V
3
( )
1
Load
Load
40 V
Load
Load
3
Load
1
4
Load
1
Load
To IEC/EN 60947-2:
60
V
02V 125 V 2 0 V4 1252V
( )
0 V 125 V
Load
Load
Load
60 V
9 ± 0.3
45 ± 0.3
3
2
Load
Load
1
2
Load
1To IEC/EN 60947-2:
1
3
80 V
52.9 ± 0.6
35.3 ± 0.4
116 ± 0.4
Load
Load
Load
80 V
2P
1 P 17.6 ± 0.2
Load
1
3P
45 ± 0.3
80 V
9 ± 0.3
116 ± 0.4
1
3-pole
3-pole
3-pole
2-pole
2-pole
60.2 ± 0.3
60.1 ± 0.3
2 P – UL
35.3
± 0.4
Dimensions
489
version
Schematic Diagrams
1-pole
1-pole
5.5 ± 0.3
5.5 ± 0.3
1
1
3
1
3
1
3
2
2
4
2
4
2
4
0V
( )
5
L
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
BR Series Product Selection
x = B, C, or D Curve
(See Curve Drawings on page 9 and 10)
Amps
1 Pole
1
BR1x1UC
MCB 489 1P x 1A ACDC
BR2x1UC
MCB 489 2P x 1A ACDC
BR3x1UC
MCB 489 3P x 1A ACDC
1.2
BR1x1.2UC
MCB 489 1P x 1.2A ACDC
BR2x1.2UC
MCB 489 2P x 1.2A ACDC
BR3x1.2UC
MCB 489 3P x 1.2A ACDC
1.5
BR1x1.5UC
MCB 489 1P x 1.5A ACDC
BR2x1.5UC
MCB 489 2P x 1.5A ACDC
BR3x1.5UC
MCB 489 3P x 1.5A ACDC
1.6
BR1x1.6UC
MCB 489 1P x 1.6A ACDC
BR2x1.6UC
MCB 489 2P x 1.6A ACDC
BR3x1.6UC
MCB 489 3P x 1.6A ACDC
2
BR1x2UC
MCB 489 1P x 2A ACDC
BR2x2UC
MCB 489 2P x 2A ACDC
BR3x2UC
MCB 489 3P x 2A ACDC
3
BR1x3UC
MCB 489 1P x 3A ACDC
BR2x3UC
MCB 489 2P x 3A ACDC
BR3x3UC
MCB 489 3P x 3A ACDC
4
BR1x4UC
MCB 489 1P x 4A ACDC
BR2x4UC
MCB 489 2P x 4A ACDC
BR3x4UC
MCB 489 3P x 4A ACDC
5
BR1x5UC
MCB 489 1P x 5A ACDC
BR2x5UC
MCB 489 2P x 5A ACDC
BR3x5UC
MCB 489 3P x 5A ACDC
6
BR1x6UC
MCB 489 1P x 6A ACDC
BR2x6UC
MCB 489 2P x 6A ACDC
BR3x6UC
MCB 489 3P x 6A ACDC
7
BR1x7UC
MCB 489 1P x 7A ACDC
BR2x7UC
MCB 489 2P x 7A ACDC
BR3x7UC
MCB 489 3P x 7A ACDC
8
BR1x8UC
MCB 489 1P x 8A ACDC
BR2x8UC
MCB 489 2P x 8A ACDC
BR3x8UC
MCB 489 3P x 8A ACDC
10
BR1x10UC
MCB 489 1P x 10A ACDC
BR2x10UC
MCB 489 2P x 10A ACDC
BR3x10UC
MCB 489 3P x 10A ACDC
12
BR1x12UC
MCB 489 1P x 12A ACDC
BR2x12UC
MCB 489 2P x 12A ACDC
BR3x12UC
MCB 489 3P x 12A ACDC
13
BR1x13UC
MCB 489 1P x 13A ACDC
BR2x13UC
MCB 489 2P x 13A ACDC
BR3x13UC
MCB 489 3P x 13A ACDC
15
BR1x15UC
MCB 489 1P x 15A ACDC
BR2x15UC
MCB 489 2P x 15A ACDC
BR3x15UC
MCB 489 3P x 15A ACDC
16
BR1x16UC
MCB 489 1P x 16A ACDC
BR2x16UC
MCB 489 2P x 16A ACDC
BR3x16UC
MCB 489 3P x 16A ACDC
20
BR1x20UC
MCB 489 1P x 20A ACDC
BR2x20UC
MCB 489 2P x 20A ACDC
BR3x20UC
MCB 489 3P x 20A ACDC
25
BR1x25UC
MCB 489 1P x 25A ACDC
BR2x25UC
MCB 489 2P x 25A ACDC
BR3x25UC
MCB 489 3P x 25A ACDC
30
BR1x30UC
MCB 489 1P x 30A ACDC
BR2x30UC
MCB 489 2P x 30A ACDC
BR3x30UC
MCB 489 3P x 30A ACDC
32
BR1x32UC
MCB 489 1P x 32A ACDC
BR2x32UC
MCB 489 2P x 32A ACDC
BR3x32UC
MCB 489 3P x 32A ACDC
35
BR1x35UC
MCB 489 1P x 35A ACDC
BR2x35UC
MCB 489 2P x 35A ACDC
BR3x35UC
MCB 489 3P x 35A ACDC
40
BR1x40UC
MCB 489 1P x 40A ACDC
BR2x40UC
MCB 489 2P x 40A ACDC
BR3x40UC
MCB 489 3P x 40A ACDC
50
BR1x50UC
MCB 489 1P x 50A ACDC
BR2x50UC
MCB 489 2P x 50A ACDC
BR3x50UC
MCB 489 3P x 50A ACDC
60
BR1x60UC
MCB 489 1P x 60A ACDC
BR2x60UC
MCB 489 2P x 60A ACDC
BR3x60UC
MCB 489 3P x 60A ACDC
63
BR1x63UC
MCB 489 1P x 63A ACDC
BR2x63UC
MCB 489 2P x 63A ACDC
BR3x63UC
MCB 489 3P x 63A ACDC
6
2 Pole
3 Pole
60.2 ± 0.3
9 ± 0.3
49.8 ± 0.3
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
3P
2P
1P
82 max.
9 ± 0.3
SU Series Product Selection
(Part Number found on the front of the breaker)
SU
2
D
60
3P
2P
1P
52.9 ± 0.6
35.3 ± 0.4
17.6 ± 0.2
UC
5.5 ± 0.3
AC/DC Rated
3-pole
1-pole
2-pole
SU
=
Supplementary
Protectors
1
3
1
1
3
Rated Amps = 1, 1.2, 1.5, 1.6, 2, 3, 4, 5, 6, 7, 8, 10,
5
12, 13, 15, 16, 20, 25, 30, 32, 35, 40, 50, 60, 63
No. of Poles = 1, 2 or 3
2
2
Curve = B, C or D
2
4
4
5.5 ± 0.3
6
Schematic Diagrams
1-pole
Dimensions – IEC/EN 60947-2 / UL1077 version
3-pole
3-pole
2-pole
1
1
82 max.
Part Number Nomenclature
60.2 ± 0.3
49.8 ± 0.3
45 ± 0.3
UL 1077 DIN-Rail Supplementary
Circuit Breakers
SUxxxUC
52.9 ± 0.6
35.3 ± 0.4
17.6 ± 0.2
1
3
3
5
9 ± 0.3
52.9 ± 0.6
3P
2
2
2
4
4
2P
6
60.2 ± 0.3
60.1 ± 0.3
35.3 ± 0.4
1 P 17.6 ± 0.2
3
1
3
2
4
2
4
0 V 125 V
0V
( )
0 V 125 V
125 V
80 V
80 V
80 V
0V
( )
0V
( )
To IEC/EN 60947-2:
To UL 1077:
1
3
1
21
21
4 3
2 1 4 3
60 V
1
0V
125 V
01V 3125 V
( )
0 V 125 V
Load
2
2
4
3
805V
0V
( )
4
3
1 4
3
2
4
80 V
6
0V
( )
60 V
60 V
All dimensions without tolerances are for reference only. Weidmuller
reserves the right to change specifications at any time without notice in
the interest of improved design, performance and cost effectiveness.
5.5 ± 0.3
0V
( )
Load
2
125 V
01V
( )
Load
Load
2
23-pole
4
2 2-pole
4
0 V 125 V
0V
( )
0 V 125 V
To UL 489:
1
Load
80 V
Load
21-pole
3
5.5 ± 0.3
5.5 ± 0.3
Load
1
Load
Load
Load
Load
Load
Load
Load
60.2 ± 0.3
60.1 ± 0.3
45 ± 0.3
1
4
116 ± 0.4
3
2
17.6
35.3 ± 0.4
2
P ± 0.2
82 max.
1
2
Load
1
52.9 52.9
± 0.6 ± 0.6
35.3 ± 0.4
3P
1 P 17.6 ± 0.2
Load
Load
Load
60.2 ± 0.3
9 ± 0.3 49.8 ± 0.3
116 ± 0.4
3P
2P
1P
To IEC/EN 60947-2:
Load
9 ± 0.3
45 ± 0.3
DC Application
When using the BR/SUxxxUC in DC applications, polarity does
not have to be observed. Maximum acceptable voltage between
the conductors depends on the number of poles, circuitry and
relevant standard / approval.
1
1
3
1
3
1
3
2
2
4
2
4
2
4
7
Load
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
SU Series Product Selection
x = B, C, or D Curve
(See Curve Drawings on page 9 and 10)
Amps
1 Pole
1
SU1x1UC
MCB 1077 1P x 1A ACDC
SU2x1UC
MCB 1077 2P x 1A ACDC
SU3x1UC
MCB 1077 3P x 1A ACDC
1.2
SU1x1.2UC
MCB 1077 1P x 1.2A ACDC
SU2x1.2UC
MCB 1077 2P x 1.2A ACDC
SU3x1.2UC
MCB 1077 3P x 1.2A ACDC
1.5
SU1x1.5UC
MCB 1077 1P x 1.5A ACDC
SU2x1.5UC
MCB 1077 2P x 1.5A ACDC
SU3x1.5UC
MCB 1077 3P x 1.5A ACDC
1.6
SU1x1.6UC
MCB 1077 1P x 1.6A ACDC
SU2x1.6UC
MCB 1077 2P x 1.6A ACDC
SU3x1.6UC
MCB 1077 3P x 1.6A ACDC
2
SU1x2UC
MCB 1077 1P x 2A ACDC
SU2x2UC
MCB 1077 2P x 2A ACDC
SU3x2UC
MCB 1077 3P x 2A ACDC
3
SU1x3UC
MCB 1077 1P x 3A ACDC
SU2x3UC
MCB 1077 2P x 3A ACDC
SU3x3UC
MCB 1077 3P x 3A ACDC
4
SU1x4UC
MCB 1077 1P x 4A ACDC
SU2x4UC
MCB 1077 2P x 4A ACDC
SU3x4UC
MCB 1077 3P x 4A ACDC
5
SU1x5UC
MCB 1077 1P x 5A ACDC
SU2x5UC
MCB 1077 2P x 5A ACDC
SU3x5UC
MCB 1077 3P x 5A ACDC
6
SU1x6UC
MCB 1077 1P x 6A ACDC
SU2x6UC
MCB 1077 2P x 6A ACDC
SU3x6UC
MCB 1077 3P x 6A ACDC
7
SU1x7UC
MCB 1077 1P x 7A ACDC
SU2x7UC
MCB 1077 2P x 7A ACDC
SU3x7UC
MCB 1077 3P x 7A ACDC
8
SU1x8UC
MCB 1077 1P x 8A ACDC
SU2x8UC
MCB 1077 2P x 8A ACDC
SU3x8UC
MCB 1077 3P x 8A ACDC
10
SU1x10UC
MCB 1077 1P x 10A ACDC
SU2x10UC
MCB 1077 2P x 10A ACDC
SU3x10UC
MCB 1077 3P x 10A ACDC
12
SU1x12UC
MCB 1077 1P x 12A ACDC
SU2x12UC
MCB 1077 2P x 12A ACDC
SU3x12UC
MCB 1077 3P x 12A ACDC
13
SU1x13UC
MCB 1077 1P x 13A ACDC
SU2x13UC
MCB 1077 2P x 13A ACDC
SU3x13UC
MCB 1077 3P x 13A ACDC
15
SU1x15UC
MCB 1077 1P x 15A ACDC
SU2x15UC
MCB 1077 2P x 15A ACDC
SU3x15UC
MCB 1077 3P x 15A ACDC
16
SU1x16UC
MCB 1077 1P x 16A ACDC
SU2x16UC
MCB 1077 2P x 16A ACDC
SU3x16UC
MCB 1077 3P x 16A ACDC
20
SU1x20UC
MCB 1077 1P x 20A ACDC
SU2x20UC
MCB 1077 2P x 20A ACDC
SU3x20UC
MCB 1077 3P x 20A ACDC
25
SU1x25UC
MCB 1077 1P x 25A ACDC
SU2x25UC
MCB 1077 2P x 25A ACDC
SU3x25UC
MCB 1077 3P x 25A ACDC
30
SU1x30UC
MCB 1077 1P x 30A ACDC
SU2x30UC
MCB 1077 2P x 30A ACDC
SU3x30UC
MCB 1077 3P x 30A ACDC
32
SU1x32UC
MCB 1077 1P x 32A ACDC
SU2x32UC
MCB 1077 2P x 32A ACDC
SU3x32UC
MCB 1077 3P x 32A ACDC
35
SU1x35UC
MCB 1077 1P x 35A ACDC
SU2x35UC
MCB 1077 2P x 35A ACDC
SU3x35UC
MCB 1077 3P x 35A ACDC
40
SU1x40UC
MCB 1077 1P x 40A ACDC
SU2x40UC
MCB 1077 2P x 40A ACDC
SU3x40UC
MCB 1077 3P x 40A ACDC
50
SU1x50UC
MCB 1077 1P x 50A ACDC
SU2x50UC
MCB 1077 2P x 50A ACDC
SU3x50UC
MCB 1077 3P x 50A ACDC
60
SU1x60UC
MCB 1077 1P x 60A ACDC
SU2x60UC
MCB 1077 2P x 60A ACDC
SU3x60UC
MCB 1077 3P x 60A ACDC
63
SU1x63UC
MCB 1077 1P x 63A ACDC
SU2x63UC
MCB 1077 2P x 63A ACDC
SU3x63UC
MCB 1077 3P x 63A ACDC
8
2 Pole
3 Pole
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Trip Curves
Trip Curves B, C, D – overcurrent protection of cables in
accordance with IEC/EN 60898-1 and IEC 60947-2
10000
Curve B / 1 ... 63 A
Trip time in seconds
Trip time in seconds
Time/Current Characteristics
1000
10000
1000
Trip between 3-5X rated current
(30-50 Amp for a 10 Amp device)
Residential and light commercial applications such as:
•R
esistive loads (low surge current)
•L
ow switching surge current
100
100
•W
ire protection
• Lighting
10
10
1
1
0,1
0,1
0,01
0,8 1
2
4
6
0,01
0,8 1
8 10
20
40
...times rated current
2
4
6
8 10
20
40
...times rated current
Magnetic tripping currents are increased by 30 % on DC supplies.
Ambient temperature 30 °C
Curve C / 1 ... 63 A
Trip between 5-10X rated current
(50-100 Amp for a 10 Amp device)
Trip time in seconds
Trip time in seconds
Magnetic tripping currents are increased by 30 % on DC supplies.
Ambient temperature 30 °C
10000
• Appliances
1000
100
10000
Commercial applications such as:
• Inductive loads
1000
•M
otors (low inrush current)
•C
ontrol circuitry
• Lighting
100
10
• Appliances
10
1
1
0,1
0,1
0,01
0,8 1
2
4
6
8 10
20
40
...times rated current
Magnetic tripping currents are increased by 30 % on DC supplies.
Ambient temperature 30 °C
0,01
0,8 1
2
4
6
8 10
20
40
...times rated current
Magnetic tripping currents are increased by 30 % on DC supplies.
Ambient temperature 30 °C
9
0,01
0,8 1
2
4
6
8 10
20
40
...times rated current
Magnetic tripping currents are increased by 30 % on DC supplies.
Ambient temperature 30 °C
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Trip time in seconds
Curve D / 1 ... 63 A
Trip between 10-20X rated current
(100-200 Amp for a 10 Amp device)
10000
Industrial applications such as:
•H
igh inductive and capacitive loads
1000
•M
otors (higher inrush current)
•P
ower supplies
100
• Transformers
• Heaters
•X
-ray machines
10
•R
eactive loads
1
0,1
0,01
0,8 1
2
4
6
8 10
20
40
...times rated current
Magnetic tripping currents are increased by 30 % on DC supplies.
Ambient temperature 30 °C
Current ratings and voltage drop at +25°C
Voltage drop in V at 1 IN
IN (A)
V
IN (A)
V
IN (A)
V
IN (A)
V
IN (A)
V
1
1.2
1.5
1.6
2
3
1.50
1.50
0.80
0.80
0.80
0.60
4
5
6
7
8
10
0.60
0.20
0.20
0.20
0.15
0.15
12
13
15
16
20
25
0.15
0.10
0.10
0.10
0.08
0.08
30
32
35
40
50
60
0.07
0.07
0.07
0.07
0.06
0.06
63
0.06
Note: When mounted side-by-side, the breakers can only carry up to 80%
of their rated current or a higher rating has to be selected
10
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Accessories
Accessory Modules
Auxiliary Contact
Description
Add-on module for circuit breaker type BR/SUxxxUC. The
auxiliary switch has a change-over contact as signal contact
and is operated with actuation of the MCB. The module has
screw terminals and is rated for AC and DC voltages.
Typical Applications
Status monitoring of MCB and/or the connected loads.
Description
Schematic Diagrams
Part Number
BAU10UC
MCB AUX Contact 1NC
Note:
As soon as the auxiliary contact module is
mounted on the MCB, the terminals 11 and 14
are connected when the MCB is in ON condition. Terminals 11 and 12 are connected when
the MCB is in OFF condition.
11
11
Technical Data
Rated currents to IEC/EN 60947-5-1:
Voltage
ratings:
AC 240 V
AC 415 V
DC 24 V
DC 48 V
DC 130 V
Current
ratings:
6A
3A
6A
2A
1A
12
Rated currents to UL 489:
Voltage
ratings:
AC 12
… 240 V
AC 277 V
DC 12
... 24 V
DC 48 V
DC 110
... 220 V
Current
ratings:
6A
3A
6A
3A
1.5 A
approx. 29 g
Approvals
TÜV
IEC/EN 60947-5-1
UL
UL 489
5.5 ± 0.5
Standard
5.5 ± 0.5
Approval authority
81 ± 0.5
9 mm
Mass
45 ± 0.5
Width
99
81 ± 0.5
-35°C ...+70°C
60.4 60.4
± 0.5± 0.5
45 ± 0.5
1 Nm max.
Ambient temperature
14
66 ±66
0.5± 0.5
85.8 ± 0.5
20,000 cycles
Tightening torque
14
Dimensions (in millimeters)
85.8 ± 0.5
Typical life
12
11
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Bell Alarm Contact
Description
Add-on module for MCB type BR/SUxxxUC. The bell alarm
contact has a change-over contact as signal contact. There
will only be a signal when the MCB tripped on grounds of a
failure (overload, short circuit), but and not when the MCB was
switched on or off manually.
By actuating the reset lever on the front the tripping signal is
acknowledged.
Typical Applications
Status monitoring of MCB and/or the connected loads.
Mounting
The add-on module is mounted on the left side of the MCB
(seen from the front). For mounting, the MCB has to be in the
OFF position.
Schematic Diagrams
Note:
As soon as the bell alarm contact module is
mounted on the MCB, the terminals 91 and
92 are connected when the MCB is in ON
condition; the terminals 91 and 94 are connected when the MCB tripped electrically; the
terminals 91 and 92 are connected when the
MCB was tripped manually; at the same time
the terminals 91 and 94 do not have contact.
91
Description
Part Number
BAU11UC
MCB Bell Alarm Contact 1NC/1NO
Technical Data
94
92
91
Rated currents to IEC/EN 60947-5-1:
Voltage
ratings:
AC 240 V
AC 415 V
DC 24 V
DC 48 V
DC 130 V
Current
ratings:
6A
3A
6A
2A
1A
94
92
9
60.4 ± 0.5
Dimensions (in millimeters)
Rated currents to UL 489:
Voltage
ratings:
AC 12
… 240 V
AC 277 V
DC 12
... 24 V
DC 48 V
DC 110
... 220 V
Current
ratings:
6A
3A
6A
3A
1.5 A
approx. 29 g
45 ± 0.5
Mass
Approvals
Standard
UL
UL 489
5.5 ± 0.5
Approval authority
81 ± 0.5
9 mm
45 ± 0.5
-35°C ...+70°C
Width
81 ± 0.5
Ambient temperature
5.5 ± 0.5
1 Nm max.
9
60.4 ± 0.5
85.8 ± 0.5
20,000 cycles
Tightening torque
66 ± 0.5
85.8 ± 0.5
Typical life
12
66 ± 0.5
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Shunt Trip
Description
Add-on module for MCB type BR/SUxxxUC. The shunt trip
module serves for remote trip of the MCB and for signalling
whether the MCB was tripped electrically or manually.
Typical Applications
Electrical remote trip of safety equipment with simultaneous
monitoring of MCB status or its connected load.
Mounting
66 ± 0.5
18 max.
The add-on module is mounted
on the left side of the MCB
60.1 ± 0.5
(seen from the front). For
mounting, the MCB has to be in the
OFF position. When auxiliary contact module/bell alarm contact
module and a shunt trip module are mounted at the same time,
the shunt trip module always has to be mounted first.
Description
Part Number
45 ± 0.5
MCB SHUNT 1NC/1NO 24VDC
81 ± 0.5
5.5 ± 0.5
83 ± 0.5
MCB SHUNT 1NC/1NO 12VDC
Schematic Diagrams
BST12VDC
BST24VDC
BST48VDC
MCB SHUNT 1NC/1NO 48VDC
MCB SHUNT 1NC/1NO 125VDC
BST125VDC
MCB SHUNT 1NC/1NO 120VA VAC
BST120VAC
MCB SHUNT 1NC/1NO 240VA VAC
BST240VAC
MCB SHUNT 1NC/1NO 277VA VAC
BST277VAC
N/-
L/ +
C1
C2
11
FA
14
12
Technical Data
Dimensions (in millimeters)
Min. trip voltage
AC 160 V
AC 160 V
AC 80 V
240 W
35 W
200 W
35 W
200 W
35 W
3A
6A
6A
DC 125 V
DC 48 V
DC 24 V
DC 12 V
DC 80 V
DC 24 V
DC 16 V
DC 8 V
200 W
30 VA
200 W
30 VA
200 W
30 VA
200 W
30 VA
1.5 A
2A
6A
6A
Power consumption
min. response power
Rated current of
auxiliary contact
Voltage ratings DC
Min. trip voltage
Power consumption
min. response power
Rated current of
auxiliary contact
Trip time
< 10 ms
Typical life
20,000 cycles
Tightening torque
1 Nm max.
Ambient temperature
-35°C...+70°C
Width
18 mm
Mass
approx. 60 g
66 ± 0.5
18 max.
60.1 ± 0.5
45 ± 0.5
AC 120 V
81 ± 0.5
AC 240 V
5.5 ± 0.5
AC 277 V
83 ± 0.5
Voltage ratings AC
N
14
Approvals
Approval authority
Standard
UL
UL 489
13
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Accessories
Accessory Modules Installation Diagram
Auxiliary
Bell Alarm
BR/SUxxxUC
Shunt Trip
Auxiliary
Auxiliary
Auxiliary
Bell Alarm
Compatibility
Auxiliary
BAU10UC
Left
X
X
BAU11UC
Left
X
X
BST12VDC
Left
X
X
BST24VDC
Left
X
X
BST48VDC
Left
X
X
BST125VDC
Left
X
X
BST120VAC
Left
X
X
BST240VAC
Left
X
X
BST277VAC
Left
X
X
Bell Alarm Contact Module
*Seen from the front
14
SUxxxUC
Auxiliary Contact Module
Auxiliary
Bell Alarm
BRxxxUC
Part Number
Shunt Trip Module
Bell Alarm
Mount
Position*
Type
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Mounting Instructions for the Accessory Modules
C
A
B
G2
E
G1
D
G1
F1
F1
F2
F2
G2
Preparing the MCB to connect the Auxiliary Contact, Bell Alarm Contact or Shunt Trip Module
• Use a small flat screwdriver to remove the clear plastic window (A) on the left side of the MCB (seen from the front). Do not
remove the clear plastic window on the right side.
•U
se the same screwdriver to remove the solid plastic cover (B) exposing the mechanical trip mechanism (C) beneath the window.
•F
or the BRxxxUCs only, slide the top and bottom fins forward and remove (D, E).
•F
or the BRxxxUCs, using small pliers remove the 2 plastic tabs on the fins (G1) and remove the 2 plugs from the breaker (F1) on
the left side only.
- For the SUxxxUCs, using small pliers remove the plugs from the breaker (F1).
- G2 shows the plastic tabs removed and F2 shows the plugs removed.
•F
or the BRxxxUCs only, reattach the fins after installing the accessory module(s).
Accessory devices are left hand mounted only (seen from the front).
Accessories for Branch and Supplementary Circuit Breakers
Applies to BAU10UC, BAU11UC and BST:
The accessory modules can be installed on the left side only (seen from the front).
Mounting
1. Bring all orange levers of all devices into the “OFF” position
2. Insert guide pin into the lever handle notch (insertion depth approx. 7 mm)
3. Combine MCB and BAU10UC, BAU11UC or BST as outlined on page 14
4. Installation is complete when all snap together
15
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Accessories
Busbar and Busbar Accessories
Busbars UL 489 – cuttable
Description
Busbars for the connection of circuit breakers type BRxxxUC to UL 489. The busbars of 1 meter length can individually be cut to a
suitable length for the application and isolated with end caps. Depending on the control cabinet design, the supply is by means of
supply terminals without increasing the installation width or by means of a terminal block directly on the rail without increasing the
installation height.
Three busbar models are available for use with auxiliary contact modules with a width of 9 mm.
How to prepare the cuttable busbar
1. The busbar can be
cut to individually
required lengths for
maximum flexibility
Lock-on, Lock-off Device
BR3C20UC
Protective Cap
Busbar
2. After cutting, clean
the cut face
3. Attach an end cap
for maximum
finger safety
Bottom/Direct
Feeder Terminal
Endcap
Feeder Terminal
Technical Data
No. of Poles
No. of Devices
No. of Pins
BRBB157
Part Number
1
57
57
BRBB256
2
28
56
BRBB357
3
19
57
BRBB137A*
1
37
37
BRBB246A**
2
23
46
600 V AC/DC
BRBB348A***
3
16
48
600 V AC/DC
Voltage Ratings
Single Phase
2 and 3 Phase
Max. AC Voltage
1000 V AC
600 V AC
Max. DC Voltage
1000 V DC
600 V DC
Current Ratings
*,**,***See Ordering Data on page 17
End Feed
Center Feed
Max. Current 18 mm2 Cross Section
80 A
160 A†
Protection Class
IP20
kA Rating (J Fuse)
14kA
†Note: Two 115 A Feeder Terminals required per phase
16
Cross Section
Max. Amperage
Max. Voltage
Pitch
1000 V AC/DC
600 V AC/DC
18 mm
2
80 A
600 V AC/DC
1000 V AC/DC
17.6 mm
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Ordering Data
No. of
Devices
No. of
Pins
12
12
MCB BUS BAR UL489
1 POLE 12 PIN
BRBB112
18
18
MCB BUS BAR UL489
1 POLE 18 PIN
BRBB118
57
57
MCB BUS BAR UL489
1 POLE 57 PIN
BRBB157
6
12
MCB BUS BAR UL489
2 POLE 12 PIN
BRBB212
9
18
MCB BUS BAR UL489
2 POLE 18 PIN
BRBB218
28
56
MCB BUS BAR UL489
2 POLE 56 PIN
BRBB256
4
12
MCB BUS BAR UL489
3 POLE 12 PIN
BRBB312
6
18
MCB BUS BAR UL489
3 POLE 18 PIN
BRBB318
19
57
MCB BUS BAR UL489
3 POLE 57 PIN
BRBB357
*1-Pole with Auxiliary
Module Spacing
37
37
MCB BUS BAR UL489
1 POLE 37 PIN AUX
BRBB137A
**2-Pole with Auxiliary
Module Spacing
23
46
MCB BUS BAR UL489
2 POLE 46 PIN AUX
BRBB246A
***3-Pole with Auxiliary
Module Spacing
16
48
MCB BUS BAR UL489
3 POLE 48 PIN AUX
BRBB348A
No. of Poles
1-Pole
2-Pole
3-Pole
Description
Part Number
Bottom/Direct
Feeder Terminal
Accessories for Busbars UL 489
Description
Part Number
Feeder Terminal, UL 489, 115 A
BRBBPWR35
Description
Part Number
Bottom/Direct Feeder Terminal, UL 489, 115 A
BRBBPWR50
Description
Part Number
Endcap for UL 489 Cuttable Busbar
Feeder Terminal
Endcap
BRBBECAP
Protective Cap
Description
Protective Cap for UL 489 cuttable busbar, 3 caps per bar
Description
Lock-on, Lock-off Device
Part Number
BRBBPCAP
Part Number
LD10
Lock-on, Lock-off
Device
17
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Busbars UL 1077 – cuttable
Description
Busbars for the connection of circuit breakers type SUxxxUC to UL 1077. The busbars of 1 meter length can individually be cut to a
suitable length for the application and isolated with end caps. Depending on the control cabinet design, the supply is by means of
supply terminals without increasing the installation width or by means of a terminal block directly on the rail without increasing the
installation height.
Three busbar models are available for use with auxiliary contact modules with a width of 9 mm.
How to prepare the cuttable busbar
1. Use a saw to cut the busbar
to the desired length
2. Slide the copper bars
Feeder Terminal
Protective Cap
from the insulation and
cut back the bars for proper
end clearances
Busbar
Endcap
Lock-on, Lock-off Device
SU3C20UC
3. Deburr the edges
Bottom/Direct
Feeder Terminal
4. Use a stiff brush or
compressed air to remove
any copper or plastic filings
and reassemble the busbar
Technical Data
5. Attach endcaps
Note: For safety purposes,
Voltage Ratings
Single Phase
2 and 3 Phase
Max. AC Voltage
1000 V AC
600 V AC
all shortened busbars
Max. DC Voltage
1000 V DC
600 V DC
need to be covered with
Current Ratings
End Feed
Center Feed
80 A
160 A†
Max. Current 18 mm2 Cross Section
Protection Class
IP20
kA Rating (J Fuse)
14kA
†Note: Two 115 A Feeder Terminals required per phase
18
suitable endcaps
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Ordering Data
No. of
Devices
No. of
Pins
12
12
MCB BUS BAR UL1077
1 POLE 12 PIN
SB112
18
18
MCB BUS BAR UL1077
1 POLE 18 PIN
SB118
57
57
MCB BUS BAR UL1077
1 POLE 57 PIN
SB157
6
12
MCB BUS BAR UL1077
2 POLE 12 PIN
SB212
9
18
MCB BUS BAR UL1077
2 POLE 18 PIN
SB218
28
56
MCB BUS BAR UL1077
2 POLE 56 PIN
SB256
4
12
MCB BUS BAR UL1077
3 POLE 12 PIN
SB312
6
18
MCB BUS BAR UL1077
3 POLE 18 PIN
SB318
19
57
MCB BUS BAR UL1077
3 POLE 57 PIN
SB357
1-Pole with Auxiliary
Module Spacing
37
37
MCB BUS BAR UL1077
1 POLE 37 PIN AUX
SB1A37
2-Pole with Auxiliary
Module Spacing
23
46
MCB BUS BAR UL1077
2 POLE 46 PIN AUX
SB2A46
3-Pole with Auxiliary
Module Spacing
16
48
MCB BUS BAR UL1077
3 POLE 48 PIN AUX
SB3A48
No. of Poles
1-Pole
2-Pole
3-Pole
Description
Part
Number
2/3P Top Feed
Terminal
1P Top Feed
Terminal
Top Feed Terminal
Description
MCB BUS BAR UL1077 1P TERM TOP FEED
MCB BUS BAR UL1077 2/3P TERM TOP FEED
Part Number
SPF351P
SPF35
Bottom/Direct
Feeder Terminal
Bottom/Direct Feeder Terminal
Description
MCB BUS BAR UL1077 1/2/3P TERM BOT FEED
Part Number
SPF50
Endcap
Endcap
Description
MCB BUS BAR UL1077 1P END CAP
MCB BUS BAR UL1077 2/3P END CAP
Part Number
SEC1P
SECMP
Protective Cap
Protective Cap
Description
MCB BUS BAR UL1077 BUS CAP YEL (5 caps)
Part Number
STPC
Lock-on, Lock-off Device
Description
Lock-on, Lock-off Device
Part Number
LD10
Lock-on, Lock-off
Device
19
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Terms
Weidmuller UC Series breakers are UL tested and certified as current limiting protective devices. Current limiting circuit
breakers provide a higher level of circuit protection than a typical zero point external breakers.
Ampere Rating
NEC
A rating of the amount of current a protective device will carry
continuously without deteriorating or exceeding temperature
rise limits.
Abbreviation for National Electrical Code. A standard for applying
electrical equipment in the United States.
Arc
The effect generated when electrical current bridges the air gap
between two conductors that are not touching.
Branch Circuit
The conductor and components following the last over-current
protective device protecting a load.
Circuit Breaker
A device designed to open and close a circuit by non-automatic
means, and to open the circuit automatically on a pre-determined
overcurrent, without damage to itself when properly applied within
its rating.
Current Limiting
A type of supplementary protector which limits the amount of
damaging short circuit current.
DIN-Rail
A solidly mounted, rail-type device to which any number of circuit
breakers can be mounted.
NEC240.2 Current Limiting
A device that, when interrupting current in its current-limiting
range, reduces the current flowing in the faulted circuit to a
magnitude substantially less than that obtainable in the same
circuit if the device were replaced with a solid conductor having
comparable impedance.
Operating Mechanism
A component of a miniature circuit breaker. Its function is to provide
the means of opening and closing the circuit.
Overcurrent Protective Device
A device such as a circuit breaker or fuse. In the event of an
overload or short circuit, this device will quickly terminate power
to the circuit.
Overload (or Overcurrent)
A condition in which current is in excess of the normal load
being drawn.
Short Circuit
An electrical fault created when two exposed conductors touch.
Double Pole
Single Pole
Term used to describe a breaker that draws power from two poles
of a load center or similar device.
Term used to describe a breaker that draws power from one pole of
a load center or similar device.
Frame
Supplementary Protector
A component of a miniature circuit breaker. Its primary function is
to provide a rigid, mechanically strong, insulated housing in which
the other components are mounted.
A device similar in function to a miniature circuit breaker, but
not UL approved as a circuit breaker. Used in conjunction with
circuit breakers.
IEC
Thermal Magnetic
Abbreviation for International Electrotechnical Commission. This
organization is associated with equipment used internationally.
The predominant trip unit technology used in the domestic market.
A bimetal and an electromagnet work together to provide overload
and short circuit protection.
IEC 60947-2 Current Limiting Circuit Breaker
A circuit breaker with sufficiently short trip time to prevent the
short circuit current from reaching the peak value which would
otherwise be reached.
Interrupting Rating
The highest current, at rated voltage, that a device is intended to
interrupt under standard test conditions.
Let-through Current
The maximum instantaneous or peak current which passes
through a protective device.
Load Center
A device that delivers electricity from a supply source to loads in
light commercial or residential applications.
Miniature Circuit Breaker (MCB)
A specific type of circuit breaker, used to switch and protect
the lowest common distribution voltage in an electrical system.
Generally used in a load center, panelboard or similar device.
20
UL AC 60Hz Cycle
UL defines an AC cycle as the potential energy of the wave form
traveling from Zero-to-Positive amplitude, Positive-to-Zero amplitude,
Zero-to-Negative amplitude, Negative-to-Zero amplitude 60 times in
one second. One cycle is completed every 16.6 milliseconds.
UL Breaker Current Limiting
UL defines breaker current limitation as a breaker that interrupts
and isolates a fault in less than half of an AC cycle. Half a cycle is
completed in 8.3 milliseconds.
Withstand Rating
The maximum current that an unprotected electrical component
can sustain for a specific period of time without the occurrence of
extensive damage.
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Additional Technical Information
Operation and Components of BR/SUxxxUC MCBs
During normal operation and the MCB switch engaged, current flows in the line side terminal to a bimetallic strip, moving
contact, fixed contact, current coil (magnetic trip coil) and out the load side terminal to complete a series path.
The MCB enclosure housing is a molded plastic material. This provides mechanical strength and insulation from the
components inside. The switching system consists of a fixed and a moving contact plate to which incoming and outgoing
conductors are connected. The current carrying components are made up of various metallic compounds depending on the
rating of the circuit breaker.
The orange lever is used to manually engage/disengage the contact under normal ON/OFF conditions, as well as indicate
status of the device. It also allows manual RESET of the latch after an overload or short circuit event.
The thermal overload configuration for the slow rising current over time consists of a strip of bimetal (two dissimilar metals).
The rise in current causes a rise in temperature. The heat generated within the bimetal itself is enough to cause deflection due
to thermal expansion of the dissimilar metals. This deflection further releases the trip latch mechanism and the contact
faces separate.
The magnetic tripping configuration for short circuit conditions consists of a system that allow fast rise time current (too
fast for the bimetal) to separate the contact faces using a spring loaded plunger. The current carrying coil in this trip
configuration moves the plunger when a strong magnetic field produced by the coils releasing the plunger engaging the trip
latch mechanism.
From the action of the fixed and moving contact faces separating in the event of an overload or short circuit situation, an
electric arc in air is formed. The UC Series is designed to handle the arc interruption process where arc energy extraction and
its cooling are provided by the arc runner and parallel arc splitter plates called the arc chute. These plates are held in position by
the housing material. The operating mechanism consists of both magnetic tripping and thermal tripping arrangements.
Lever
Manual Switch
Trip Latch
Magnetic Coil
Plunger
Load Side Terminal
Fixed Contact
Thermal Bimetal
Line Side Terminal
Moving Contact
Arc Chute
Arc Runner
21
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Weidmuller UC Series Thermal Magnetic Definition
Thermal Overload
A thermal overload is a slow and small overcurrent situation that causes the ampacity and temperature of the circuit to
gradually increase. This type of event is characterized by a slight increase in the load (ampacity) on the circuit and is interrupted
by the thermal trip unit of the breaker.
Thermal R
egion of the trip curve representing the tripping characteristics of the bimetal trip unit.
The tripping region is sloped due to the gradual overload, heating, and bending nature of the thermal
element over time.
Short Circuit
A short circuit is an intense overcurrent situation that causes the ampacity of the circuit to increase. This type of event is
characterized by a dramatic increase in the load (ampacity) on the circuit and is interrupted by the magnetic trip unit of
the breaker.
Magnetic R
egion of the trip curve representing the tripping characteristics of the magnetic trip unit.
The tripping region is not sloped due to the instantaneous nature of the magnetic element during a
short circuit.
MCBs’ tripping characteristics are represented graphically in a trip curve chart. The chart shows the response of the thermal
and magnetic trip element to various overload and short circuit situations.
Trip time in seconds
Time/Current Characteristics
10000
1000
100
Thermal
10
Area either event will trip CB
1
Magnetic
0.1
0.01
0.8 1
22
2
4
6
8 10
20
40
...times rated current
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Example 1: Thermal Tripping Characteristic
0 Amp B Curve Breaker
1
Thermal Overload at 20 Amps
Trip time in seconds
Examples of Trip Curve Interpretation
Reading Trip Curves
10000
1000
To determine the time it takes for the breaker to trip with a
20 A load:
•F
ind 20 A on the bottom of the curve –10 A breaker
at 2X current is 20 A
100
Time Bandwidth
•F
ollow the ampacity line up to the “time” tripping region of
the curve.
10
The breaker will trip under a thermal overload in the area
between where 20 A intersects the bottom curve line and the
intersection of the top curve. The breaker is guaranteed to trip in
this time bandwidth.
1
0,1
0,01
0,8 1
2
4
6
40
8 10
20
...times rated current
Example 2: Magnetic Tripping Characteristic
0 Amp B Curve Breaker
1
Short Circuit at 70 Amps
To determine the time it takes for the breaker to trip with a
70 A short circuit:
• Find 70 A on the bottom of the curve –10 A breaker
at 7X current is 70 A
Trip time in seconds
Magnetic tripping currents are increased by 30 % on DC supplies.
Ambient temperature 30 °C
10000
1000
100
• Notice
the “time” at the bottom left corner of the chart axis.
The breaker is guaranteed to trip no later than .01 seconds for
any short circuit equal to 70 A.
10
1
0,1
0,01
0,8 1
2
4
6 8 10
20
40
70 ...times rated current
Magnetic tripping currents are increased by 30 % on DC supplies.
Ambient temperature 30 °C
23
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Ambient Temperature Derating
Maximum operating currents depending on ambient temperature
Rated current
IN (A)
Max. operating currents depending on ambient temperature T (A)
-35°C
-30°C
-25°C
-20°C
-15°C
-10°C
-5°C
0°C
+5°C
+10°C
1
1.27
1.25
1.23
1.21
1.19
1.17
1.15
1.13
1.10
1.08
+15°C
1.06
2
2.87
2.81
2.74
2.68
2.62
2.55
2.48
2.42
2.35
2.28
2.20
3
3.89
3.83
3.76
3.70
3.64
3.57
3.50
3.44
3.37
3.30
3.22
4
4.91
4.83
4.76
4.70
4.64
4.57
4.50
4.44
4.37
4.30
4.22
5
6.68
6.56
6.44
6.32
6.19
6.07
5.94
5.81
5.68
5.54
5.40
6
7.70
7.58
7.46
7.34
7.21
7.09
6.96
6.83
6.70
6.56
6.42
7
8.78
8.66
8.54
8.42
8.29
8.17
8.04
7.91
7.78
7.64
7.50
8
9.80
9.68
9.56
9.44
9.31
9.19
9.06
8.93
9.80
8.66
8.52
11.01
10
13.89
13.62
13.35
13.07
12.81
12.53
12.23
11.93
11.63
11.33
12
15.91
15.64
15.37
15.09
14.83
14.55
14.25
13.95
13.65
13.35
13.03
13
16.92
16.65
16.38
16.10
15.84
15.56
15.26
14.96
14.66
14.36
14.04
15
19.77
19.42
19.07
18.74
18.39
18.04
17.69
17.32
16.95
16.57
16.19
16
20.78
20.43
20.08
19.75
19.40
19.05
18.70
18.33
17.96
17.58
17.20
20
25.67
25.28
24.88
24.47
24.06
23.64
23.22
22.78
22.34
21.89
21.43
25
32.21
31.72
31.22
30.70
30.18
29.65
29.10
28.55
27.98
27.41
26.82
30
39.00
38.42
37.78
37.13
36.47
35.80
35.11
34.43
33.71
32.99
32.26
32
41.04
40.46
39.82
39.17
38.51
37.84
37.15
36.47
35.75
35.03
34.30
35
44.08
43.50
42.86
42.21
41.55
40.88
40.19
39.51
38.79
38.07
37.34
40
51.63
50.86
50.04
49.21
48.37
47.51
46.63
45.74
44.83
43.90
42.95
50
64.92
63.97
62.92
61.86
60.77
59.67
58.54
57.40
56.23
55.05
53.81
60
80.45
79.03
77.61
76.16
74.69
73.19
71.67
70.11
68.51
66.88
65.21
63
83.48
82.06
80.71
79.19
77.72
76.22
74.70
73.14
71.54
69.91
68.24
+70°C
Rated current
IN (A)
Max. operating currents depending on ambient temperature T (A)
+20°C
+25°C
+30°C
+35°C
+40°C
+45°C
+50°C
+55°C
+60°C
+65°C
1
1.05
1.02
1.00
0.97
0.94
0.91
0.89
0.86
0.83
0.80
0.77
2
2.12
2.04
2.00
1.90
1.82
1.74
1.65
1.56
1.47
1.36
1.25
3
3.14
3.06
3.00
2.92
2.84
2.76
2.67
2.58
2.49
2.38
2.27
4
4.14
4.06
4.00
3.92
3.84
3.76
3.67
3.58
3.49
3.38
3.27
5
5.25
5.12
5.00
4.82
4.66
4.50
4.34
4.17
3.99
3.81
3.62
6
6.27
6.14
6.00
5.84
5.68
5.52
5.36
5.19
5.01
4.83
4.64
7
7.35
7.22
7.00
6.92
6.76
6.60
6.44
6.27
6.09
5.91
5.72
8
8.37
8.24
8.00
7.94
7.78
7.62
7.46
7.29
7.11
6.93
6.74
6.55
10
10.67
10.34
10.00
9.63
9.24
8.85
8.45
8.01
7.55
7.06
12
12.69
12.36
12.00
11.65
11.26
10.60
10.47
10.03
9.57
9.08
8.57
13
13.70
13.37
13.00
12.66
12.27
11.61
11.48
11.04
10.58
10.09
9.58
15
15.79
15.39
15.00
14.54
14.10
13.65
13.19
12.70
12.20
11.69
11.64
16
16.80
16.40
16.00
15.55
15.11
14.66
14.20
13.71
13.21
12.70
12.65
20
20.96
20.47
20.00
19.47
18.95
18.42
17.87
17.30
16.71
16.10
15.47
25
26.22
25.61
25.00
24.33
23.67
23.00
22.28
21.56
20.80
20.02
19.21
30
31.50
30.73
30.00
29.13
28.30
27.44
26.56
25.65
24.71
23.74
22.73
32
33.54
32.77
32.00
31.17
30.34
29.48
28.69
27.69
26.75
25.78
24.77
35
36.58
35.81
35.00
34.21
33.38
32.52
31.64
30.73
29.79
28.82
27.81
40
41.98
40.99
40.00
38.93
37.85
36.75
35.61
34.43
33.21
31.95
30.63
50
52.56
51.28
50.00
47.82
46.24
44.81
43.33
41.81
40.23
38.58
35.77
60
63.50
61.75
60.00
57.08
55.16
53.18
51.13
49.00
46.78
44.47
40.47
63
66.53
64.78
63.00
60.11
58.19
56.21
54.16
52.03
49.81
47.50
43.50
24
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
UC Series D Curve Thermal Magnetic Tripping Characteristics vs K Curve
The K and UC Series D curve breakers are both designed for motor applications where ampacity rises quickly and
momentarily during “start-up”. Both curves can “ride through” the momentary inrush of current and prevent nuisance
tripping while providing protection to the circuit.
Both curves have almost identical tripping characteristics. The magnetic element tripping characteristics are identical
between the two curves and the thermal element tripping characteristics have a slight variation.
Thermal Tripping Characteristics Comparison
Example:
10 Amp D Curve Breaker
Thermal Overload at 20 Amps
To determine the time it takes for the breaker to trip with a
20 A load:
• Find 20 A on the bottom of the curve –10 A breaker
at 2X current is 20 A
• Follow
the ampacity line up to the “time” tripping region of the
curve.
The breaker will trip under a thermal overload in the area
between where 20 A intersects the bottom curve line (~7.5s)
and the intersection of the top curve (~150s). The breaker is
guaranteed to trip in this time bandwidth.
Trip time in seconds
D Curve
10000
1000
100
Time Bandwidth
10
1
0,1
0,01
0,8 1
2
4
6
8 10
20
40
...times rated current
Magnetic tripping currents are increased by 30 % on DC supplies.
Ambient temperature 30 °C
K Curve
Similarly the K curve breaker will trip under a thermal overload
between 6 and 350 seconds. The breaker is guaranteed to
not trip before ~6 seconds and will not take longer than ~350
seconds to trip. The breaker may trip at any time in this
time bandwidth.
25
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Short Circuit Tripping Characteristics Comparison
Example:
10 Amp K Curve Breaker and UC Series 10 Amp
D Curve Breaker
Short Circuit at 100 Amps
Both breakers have an element that will trip between 10 and 14
times rated current. Both breakers will trip under a short circuit
before .01 seconds. And both breakers are guaranteed to trip no
later than .01 seconds for any short circuit equal to 100 A
or greater.
Trip time in seconds
D Curve
10000
1000
100
10
1
0,1
K and UC Series D Curve Summary
Thermal Element Minimum Tripping
The UC Series D curve MCB will interrupt an overload at 2X
rated current in 7.5s or greater. The K curve MCB will interrupt
an overload at 2X rated current in 6 seconds or greater. This
additional time allows a circuit more time to “ride through” high
inrush at start-up and prevent nuisance tripping.
Thermal Element Bandwidth
The K curve tripping bandwidth at 2X rated current is between
6 and 350 seconds. The UC Series D curve tripping bandwidth
at 2X rated current is between 7.5 and 150 seconds. The
differences between the bandwidths demonstrate calibration
and quality control accuracy. The UC Series D curve breaker
from Weidmuller has a much smaller tolerance bandwidth and
requires a higher level of adjustment during manufacturing and
quality control validation.
Magnetic Element
The magnetic element of the K curve and UC Series D curve
MCBs are identical. Both breakers interrupt a short circuit at 10X
the rated current (or greater) in no later than .01 seconds.
26
0,01
0,8 1
2
4
6
8 10
20
40
...times rated current
Magnetic tripping currents are increased by 30 % on DC supplies.
Ambient temperature 30 °C
K Curve
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Additional Weidmuller Offerings
CB4200 Series Circuit Breakers
Thermal Magnetic Type
•R
ated from 0.05 to 16.0 amps
• Available in single or double pole configurations
•F
eatures a tease free design to reduce contact damage
•O
ffers push button trip/reset function
•T
rip free design means the breaker cannot be held closed
against a fault
•M
ounts on 32 mm‡ or 35 mm DIN-rail
•U
L 1077 recognized
•C
SA C22.2 No. 235
Double Pole
Trip Curves
Thermal Magnetic Type
Typical time/current characteristics at 23°C
Technical Data
AC 250 V, DC 65 V, 50/60 Hz
0.05…16 A
CSA
AC 250 V, DC 65 V, 50/60 Hz
0.05…16 A
AC 250 V, DC 65 V, 50/60 Hz
0.05…16 A
PTI 600 to IEC 112
Dielectric strength
4,000 VAC; IEC 664 & 664 A
Insulation resistance
> 100 MM (DC 500 V)
Interrupting capacity
(VDE 0660, Part 101, P-2)
4201-10
–30ϒC
+23ϒC
+55ϒC
0.05…0.8 A
Self-limiting
1…2 A
200 A
400 A
Rated
current
Rated
voltage
Maximum
capacity
0.05…2.0 A
AC 250 V
200 A
2.0…16 A
AC 250 V
200 A
20 A
AC 125 V
400 A
Typical life at 2 x rated current
5,000 operations
Shock
25g (11 ms) to IEC 68-2-27, Test Ea
Torque
1.2 Nm
Vibration
5g (57 to 500 Hz / ±0.38 mm, 10 to 57 Hz) to IEC
68-2-6, Test Fc
Temperature range
-30°C…+55°C (-22°F…+131°F)
Corrosion
96 hours at 5% salt spray, to IEC 68-2-11, Test Ka
Humidity
240 hours at 95% RH, to IEC 68-2-3, Test Ca
Weight
60 g per pole
Wire size (UL)
#20…8 AWG | solid/0.5…6 mm2
–30ϒC
+23ϒC
+55ϒC
1,000
100
10
1
10
1
0.1
0.1
0.01
0.01
0.001
0.8 1
2
3
4
6
8 10
20 30
50 70 100
0.001
0.8 1
… times rated current
‡
88toto
1616
AA
10,000
100
Maximum
capacity
2.5…16 A
Interrupting capacity
4201 (UL 1077/EN 60934 PC1)
M1+
M1+
0.05to
to7.5
7.5 A
0.05
1,000
Trip time in seconds
Creepage resistance
2
3
4
6
8 10
20 30
50 70 100
… times rated current
Adapter foot – dimensions in mm (in.)
20
VDE
M1+
M1+
10,000
Trip time in seconds
UL
(.787)
Voltage rating
and current†
Single Pole
9102100000
TS32 adapter
Note: Resistive and inductive loads (0.05 - 16 A)
†
27
BR and SU Series| Thermal Magnetic Miniature Circuit Breakers
Ordering Data
Single Pole
Current Ratings
(amps)
‡
Double Pole
Part No. TS 35
For TS 32 Rail, see adapter
‡
Part No. TS 35
For TS 32 Rail, see adapter
0.05
9124083500
0.08
9124653500
9124233500
0.1
9104173500
9120353500
0.2
9104183500
9124243500
0.3
9129813500
9124263500
0.4
9124093500
9124273500
0.5
9101003500
9129583500
0.6
9124113500
9124283500
0.7
9129563500
9124293500
0.8
9101103500
9129593500
1.0
9101203500
9129613500
1.2
9101303500
9129623500
1.3
9124123500
9124313500
1.4
9124133500
9124323500
1.5
9101403500
9129633500
1.8
9124143500
9124333500
2.0
9101503500
9129643500
2.5
9101603500
9129653500
3.0
9101703500
9129663500
3.5
9124163500
9124343500
4.0
9104353500
9129713500
4.5
9124173500
9124353500
5.0
9101803500
9129673500
5.5
9107833500
9124363500
6.0
9103813500
9124373500
6.5
9120043500
9124383500
7.0
9104153500
9124393500
8.0
9103003500
9104673500
9.0
9104613500
9124423500
10.0
9101903500
9129683500
11.0
9124183500
9124433500
12.0
9107843500
9124443500
13.0
9124193500
9124453500
14.0
9107853500
9124463500
15.0
9102003500
9129693500
16.0
9124213500
9124473500
Accessories
Jumpers
Daisy Chain 50*
Straight CQB**
insulated
Angled CQB**
insulated
Adapter foot (for TS 32 Rail)
Busbar
9124223500
Type
Part No.
BDC 50
9970290000
CQB 2
9970560000
CQB 3
9970570000
CQB 4
9970580000
CQB 10
9970590000
CQB 2
9970600000
CQB 3
9970610000
CQB 4
9970620000
CQB 10
9970630000
MCBAF/TS 32
9102100000
6720000225
Power lug for 6720000227
6720000226
Marking Tags
28
Type
Part No.
WS 8/5 MC
1640750000***
Consecutive horizontal
DEK 5/5
0473460001
Consecutive vertical
DEK 5/5
0473560001
Special print only
Dimensions in mm
Schematic Diagrams
Double Pole
Dimensions
Dimensions in mm
Schematic Diagrams
6720000227
Single pole 1 meter
Busbar end cap for 6720000227
Note: Part numbers are shown
for a single card of pre-printed
tags numbered 1-50.
Single Pole
Dimensions
*BDC will accommodate 20 A per pin, 20 A total
**CQB will accommodate 18 A per pin, 18 A total; dedicated
to 4201 Series
***Please specify horizontal or vertical print when ordering.
Standard quantity = 144 tags per card.
Weidmuller Catalogs at a Glance
Catalog 1:
Modular Terminal Blocks
• P-Series (Push-in)
• I-Series (IDC)
• Power Distribution
Blocks and Fuse Blocks
•
•
•
•
Stud Style (Screw clamp)
Z-Series (Tension clamp)
W-Series (Screw clamp)
Multi-function Blocks
Catalog 6:
Tools
• Cutting
• Stripping
• Crimping
• Screwdrivers
• Automatic Machines
• Ferrules
Catalog 2:
PCB Terminals and Connectors
Catalog 7:
Marking Systems
Catalog 3:
RockStar®– Heavy Duty Connectors
Catalog 8:
Sensor Actuator Interface
Catalog 4.1:
Analog Signal Conditioning
Catalog 9:
Industrial Ethernet
Catalog 4.2:
Relays and Optocouplers
Catalog 10:
Short Form Catalog
Catalog 4.3:
Power Delivery
Catalog 11:
Circuit and Surge Protection
Catalog 4.4:
Surge Protection
Catalog 12:
Wireless I/O and Ethernet Connectivity
Catalog 5:
Enclosures and Cable Glands
Catalog u-remote:
Distributed I/O Solutions
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•
•
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Space Saving Technologies
Wide Variety of Clamping Technologies
Pitches Ranging from 3.50 mm to 15.00 mm
Orientations Ranging from 90˚ to 270˚
• Inserts
• Modular System
• Housings IP65 and IP68
• Cable Glands
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•
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Intrinsically Safe Conditioners
Signal Converters and Monitoring Devices
Indicators and Configurable Displays
Fieldbus Distribution Boxes
Mechanical Relays
Solid-State (Opto) Relays
Power Solid-State Relays
Multifunction Relays and Timers
• Power Supplies
• UPS Control Units
• Battery Back Up Units
•
•
•
•
Surge Protection for Low-Voltage
Surge Protection for Instrumentation and Control
Surge Protection for Data Interfaces
Surge Protection for Photovoltaic Systems
• Enclosures
• Cable Glands
• Cabtite (Cable Entry System)
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Terminal Markers
Wire and Cable Markers
Device and Equipment Markers
Printing Systems and Software
SAI Passive Blocks
SAI Universal
SAI ASI
Cables and Connectors
• Unmanaged Switches
• Managed Switches
• Routers
• Media Converters
• Terminal Blocks
• Enclosures and
Cable Glands
• Professional Tools
• Heavy Duty Connectors
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• SteadyTEC®
• RJ45 Connectors
• Fiber Optic Connectors
• Accessories
• Power Supplies
and Breakers
• Relays and Optos
• Analog Signal
Conditioning
• Wireless and Ethernet
Surge Protection for Low Voltage
Surge Protection for Instrumentation and Control
Circuit Breakers and Protectors
DIN-mountable AC Receptacles (DRAC)
Wireless I/O and Ethernet
Wireless Gateways
Wireless Transceivers
Antennas and Accessories
• Field Bus Couplers
• Digital Input and
Output Modules
• Analog Input and
Output Modules
• Power Feed-in Modules
• Temperature Modules
• Functional Safety Modules
BR/SUxxxUC Series
Weidmuller – Your partner in Industrial Connectivity
UL 489 and UL 1077 – AC/DC Rated
Miniature Circuit Breakers
As experienced experts we support our customers and partners around the world
with products, solutions and services in the industrial environment of power,
signal and data. We are at home in their industries and markets and know the
technological challenges of tomorrow. We are therefore continuously developing
innovative, sustainable and useful solutions for their individual needs. Together we
set standards in Industrial Connectivity.
Visit our BR/SUxxxUC Series Circuit Breakers website page for more information:
www.weidmuller.com/BRSUxxxUCSeries
Weidmuller, Canada
Weidmuller, Mexico
Weidmuller, United States
10 Spy Court
Markham, Ontario L3R 5H6
Telephone: (800) 268-4080
Facsimile: (877) 300-5635
Email: info1@weidmuller.ca
Website: www.weidmuller.ca
Blvd. Hermanos Serdán 698,
Col. San Rafael Oriente
Puebla, Puebla, Mexico
C.P. 72029
Telephone: 01 222 2686267
Facsimile: 01 222 2686219
Email: clientes@weidmuller.com.mx
Website: www.weidmuller.com.mx
821 Southlake Blvd.
Richmond, Virginia 23236
Telephone: (800) 849-9343
Facsimile: (804) 379-2593
Email: info@weidmuller.com
Website: www.weidmuller.com
www.weidmuller.com
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