Thermal cut-out
Thermostat
27
28
29
R
Applications
- Household appliances
- Electronics
- Machinery
Benefits
- Up to 100,000 cycles
- Various terminals on-hand
- Small tolerances and hysteresis available
- Response temperatures from 0°C up to 260°C
Technical data
control type
ratings
11EN
03EN
52N
60EN1)
05EN
15N
function
automatic
manual
version
normally closed / normally open
normally closed
rated current at 250 Vac ( cos φ 0,95 )
VDE
switching cycles
max. temperature Ta ( steps in 5 K )
UL
16 A
16 A
16 A
10 A
16 A
16 A
16 A
10,000
10,000
10,000
100,000
3,000
6,000
3,000
150 °C
150 °C
40 °C ... 250 °C
150 °C
10 A
__
10 A
16 A
10 A
6,000
6,000
6,000
150 °C
250 °C
150 °C
150 °C
rated current at 240 Vac ( cos φ 1,0 )
150 °C
10 A
10 A
230
°C2)
switching cycles
100,000
100,000
100,000
__
max. temperature Ta ( steps in 5 K )
150 °C
150 °C
230 °C
__
tolerance
Ta 100°C: ± 4 K / Ta >140°C: ± 5 K
contact resistance
< 30 mΩ
hysteresis / reset temperature
Ta 100°C: 15 K ± 5 K / Ta >140°C: 20 K ± 5 K
degrees of protection provided by enclosures (EN 60529)
I, II
VDE
certifications
EN 60730-1 / -2-9
UL873 / UL60730-1A / -2-9 4)
UL (E43273 / E201152)
C22.2 No. 24 3)
CSA
no certification
2)
type 55H up to 260°C
Standard types
type
R28 11EN
nc
1
customer-specific
IP00 ( 60EN IP54 )
suitable for use in protection class
1)
23EN
3)
different ratings
4)
type 15N
illustration
drawing
dimensions ( mm )
technical
description
no
code
3
standard
dielectric strength
2,000 Vac
terminals 6.3 x 0.8,
housing thermosetting
plastic 9mm,
moving bracket small,
cap aluminium
terminals 6.3 x 0.8,
housing thermosetting
plastic 12mm,
moving bracket small,
cap aluminium
R28 03EN
1
3
standard
dielectric strength
2,000 Vac
R28 52N
1
3
standard
dielectric strength
2,000 Vac
terminals 6.3 x 0.8,
housing ceramic 12mm,
moving bracket small,
cap aluminium
1
manual
dielectric strength
1,800 Vac
terminals 6.3 x 0.8,
housing thermosetting plastic,
moving bracket small,
cap aluminium,
reset pin
1
manual
dielectric strength
1,800 Vac
terminals 6.3 x 0.8,
housing ceramic,
moving bracket small,
cap aluminium,
reset pin ceramic
R29 23EN
1
manual
dielectric strength
2,000 Vac
R28 60EN
1
R27 05EN
R27 15N
3
tight against humidity
dielectric strength
1,800 Vac
terminals 6.3 x 0.8,
housing thermosetting plastic,
moving bracket small,
cap aluminium,
reset pin
lead wire 1.25mm2,
housing thermosetting plastic,
fix bracket,
cap aluminium,
degree of protection IP54
Fixings
illustration
drawing
dimensions ( mm )
technical
description
code
used in type
4
R27, R28, R29
moving bracket, small
3
R27, R28, R29
moving bracket
S
R27, R28, R29
stud of
M5 x 6 brass, SW17
(also other variations
available)
B (+A)
R27, R28, R29
fix bracket
possible angles:
0 / 45 / 90 / 135 deg
execution of drawing: 135 deg
Terminals
code
used in type
illustration
drawing
dimensions ( mm )
technical
description
R27, R28, R29
terminals 4.8 x 0.5
brass nickel plated up to
Ta max. 150°C
>150°C steel nickel plated
also available: angle 45 / 90 deg
R27, R28, R29
terminals 4.8 x 0.8
brass nickel plated up to
Ta max.150°C
also available: angle 90 deg
brass: 03 (0 deg)
brass: 09 (45 deg)
brass: 04 (90 deg)
steel: 93 (0 deg)
steel: 94 (90 deg)
R27, R28, R29
terminals 6.3 x 0.8
brass nickel plated up to
Ta max. 150°C
>150°C steel nickel plated
also available: angle 45 / 90 deg
00
R27, R28
solder terminals
Ta max. 140°C
41 (0 deg)
42 (90 deg)
R27, R28, R29
solder terminals,
nickel plated,
also available: angle 90 deg
Ta max. 140°C
SA
R27, R28
PCB terminals
solder terminals
Ta max. 140°C
brass: 05 (0 deg)
brass: 10 (45 deg)
brass: 06 (90 deg)
steel: 95 (0 deg)
brass: 45 (0 deg)
brass: 46 (90 deg)
Caps
Cap Code 1 in standard execution (Ta 50°C – 199°C), material aluminium
Cap Code T (Ta 0°C – 50°C and Ta ≥ 200°C and all normally open types), material
aluminium
Deviations from standard controls (caps, terminals, fixings) on request.
Especially for electronic applications with voltage 6…120 Vac / 6…30 Vdc and current 10…100 mA, there are switches
with crossbar- contacts available.
Controls as single operation device (SOD) up to 150°C and reset temperature minus 35°C are available (type 81ES).
Ordering and marking example
Ordering example
R28 03
E
N
1
Marking example
5
T
03
4
50±3 40±4
reset temperature
response temperature
fixing code
A100
norm. closed (B norm. open) response temperature
03EN XXXX
type manufacture code
XXXX
date of manufacture
terminal code
cap code
housing material (2 ceramic / 5 plastic)
contact execution (1 normally closed / 3 normally open)
type of contact (N normal contact / P low current)
European version
RoHS
compliant
base type
product
Microtherm type
Representation office:
Microtherm GmbH
Täschenwaldstraße 3
P.O. Box 1208
D-75112 Pforzheim
Fon: +49 (0)7231 787-0
Fax : +49 (0)7231 787-155
E-Mail: info@microtherm.de
Internet: www.microtherm.de
03.2014-HB Technical subject to change without notice
Deviations from standard controls on request.