Potter & Brumfield
W54 series
Push To Reset Only
P&B Thermal Circuit Breaker
Insulation Resistance: 100 megohms.
Maximum Operating Voltages: 50VDC; 250VAC .
Interrupt Capacity: 1,000 amps in accordance with UL standard 1077.
Resettable Overload Capacity: Ten times rated current.
Reset Time: 60 seconds.
Features
• 5 to 40 amp ratings.
• Cannot be manually tripped.
• Button extends for visual trip indication.
• Push button to reset breaker.
• Numerous mounting and termination options.
• Choice of silver-cadmium oxide or silver-tin oxide contacts.
• Optional bottom marking of amperage rating.
Typical Resistance vs. Current Rating @25°C
Current Typical Current Typical
Rating Resistance Rating Resistance
in Amps
in Ohms
in Amps
in Ohms
Agency Approvals
W54 series is UL 1077 Recognized as Supplementary Protectors,
File E69543, for Canada and the United States. Available models
meet Ignition Protection requirements in accordance with UL 1500
(excludes models rated >30A). CSA Accepted as Supplementary
Protectors (Appliance Component Protectors), File 240027 (to
125VAC, excludes models rated >30A). Approved to VDE 0642/
EN60934 (Circuit Breakers for Equipment) License Number 40007877
(excludes models rated >20A, models with screw terminals, models
with silver-tin oxide contacts). CCC mark compliant, certificate
2004010307123217.
5.0
6.0
7.0
8.0
10.0
12.0
0.050
0.042
0.036
0.031
0.025
0.021
15.0
20.0
25.0
30.0
35.0
40.0
0.017
0.012
0.010
0.008
0.007
0.006
Mechanical/Environmental Data
Operating Temperature Range: 0°C to +60°C.
Termination: .250” (6.35mm) quick connects or #8-32 screws.
Mounting: Various options. See Ordering Information and drawings.
Approximate Weight: 0.9 oz. (25.0g).
Users should thoroughly review the technical data before selecting a product part
number. It is recommended that users also seek out the pertinent approvals files
of the agencies/laboratories and review them to confirm the product meets the
requirements for a given application.
Outline Dimensions
Electrical Data @ 25°C
Calibration: Will continuously carry 100% of rating.
May trip between 101% and 134%, but must trip at 135% of
rating within one hour at +25°C.
Dielectric Strength: 1,500VAC (60 seconds).
Time vs. Current Trip Curve @ +25°C
1000
Overload
Trip Times
100%
No Trip
135%
Trip in 1 hour
200%
5.0 - 30.0 Sec.
300%
1.8 - 7.6 Sec.
400%
1.0 - 4.5 Sec.
500%
0.6 - 3.0 Sec.
600%
0.4 - 2.2 Sec.
800%
0.2 - 1.2 Sec.
1000%
0.15 - 0.8 Sec.
900
Load Current As A Percent
Of Breaker Rating
800
700
600
500
Optional Protective Boot
400
Silicone rubber boot is bonded to integral metal nut.
300
200
1-1423696-5
Black boot for W54 with
3/8”-24 bushing.
135
100
0
.1
1
10
100
1000
10,000
Time In Seconds
Ambient Compensation Table
Ambient
Rating Correction Factor
Temperature
in °C
5-8A Models
9-30A Models
10
20
25
30
40
50
60
Revised 01-21
www.te.com
.90
.98
1.00
1.10
1.25
1.61
2.00
1-1423696-6
Clear boot for W54 with
M11 X 1.0 bushing.
.799
(20.3)
1-1423000-1
Clear boot for W54 with
M11 X 1.0 bushing.
.70 DIA.
(17.8)
.80
.90
1.00
1.05
1.15
1.31
1.55
Dimensionsareininchesover
(millimeters)unlessotherwise
specified.
To use this chart: Divide the breaker
rating by the correction factor to
determine the compensated rating.
Calculate the overloads in terms of
the compensated rating to use the
published trip curve.
Do not use these devices outside
their specified operating temperature
ranges.
Dimensions are shown for reference
purposes only. Specifications and
availability subject to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
SouthAmerica:55-11-2103-6000
Hong Kong: 852-2735-1628
1
Japan: 81-44-844-8013
UK: 44-8706-080208
Potter & Brumfield
Ordering Information
Typical Part No.
>
W 54 -X B 1 A 4 A 1 0 -5
1. Designator:
W = Circuit breaker
2. Series Number:
54 = Single pole, push-to-reset, thermal model
3. Circuit Function & Contact Material:
X = Series trip, silver-cadmium oxide contacts
F = Series trip, silver-tin oxide contacts †
†Not VDE
4. Button Color & Rate Marking:
A = White, plain, no rate marking
B = White with rate marking (vertical)
D = Black, plain, no rate marking
E = Black with rate marking (horizontal)
F = White with rate marking (horizontal)
H = Black with rate marking (vertical)
I = Red, plain, no rate marking
5. Mounting Bushing:
1 = Metal, 9.8mm (double D) x 12.6mm long, M11x1 threads, (similar to 7/16”), round base
2 = Metal, 3/8” (single D) x 10mm long, 3/8”x24 threads, hex base
3 = Metal, 9.8mm (double D) x 12.6mm long, M11x1 threads, (similar to 7/16”), hex base
4 = Metal, 10.5mm (double D) x 12.6mm long, M12x1 threads, (similar to 15/32”), round base
6 = Plastic, 9.8mm (double D) x 12.6mm long, M11x1 threads, (similar to 7/16”), round base
7 = Plastic, 3/8” (single D) x 10mm long, 3/8”x24 threads, hex base
8 = Plastic, snap-in type
Notes: Codes 1, 3 and 6 are similar in size to 7/16” bushings (not exact equivalent).
Code 4 is similar in size to a 15/32” bushing (not exact equivalent)
6. Terminals:
A = Quick connect .250” (6.35mm), straight
B = Quick connect .250” (6.35mm), bent 90°
C = #8-32 screw, bent 90° (screws installed) †
D = Quick connect .250” (6.35mm), bent 45°
E = Quick connect .250” (6.35mm), bent 90° opposite
F = #8-32 screw, bent 45° (screws installed)
G = QC .250” (6.35mm) and #8-32 screw, bent 90° (screw installed)
7.
Mounting Hardware:
4 = Metal, knurled nut/hex nut
6 = Metal, hex nut
12 = Metal, knurled nut
15 = Metal, two hex nuts and one lockwasher
18 = Metal, one hex nut and one lockwasher
†Not VDE
7 = Plastic, knurled nut
8 = Plastic, knurled nut with small hole
22 = Plastic knurled nut, metal lockwasher
99 = None
8. Mounting Hardware Packaging:
A = Assembled to bushing
B = Bulk unassembled C = No mounting hardware
9. Maximum Operating Voltage:
1 = 250VAC
2 = 125VAC / 50VDC
10. Nameplate:
0 = None
1 = Embossed aluminum
2 = Silver color printing on black
3 = Black printing on silver color
11. Specify Amp Rating:
5 7 10 15 25†
35*†‡
6
8
12
20
30†
40*†‡
*UL1077, but not UL1500
†Not VDE ‡Not CSA
12. UL Recognition:
Leave Blank = UL1077 recognized breaker
M = Model meeting Ignition Protection requirements in accordance with UL 1500, in addition to UL1077 recognition (not available with models >30A rating.)
Code M breakers are not VDE approved or CSA certified.
Our authorized distributors are more likely to stock the following items for immediate delivery.
W54-XB1A4A10-5
W54-XB1A4A10-10
W54-XB1A4A10-15
W54-XB1A4A10-20
W54-XB1A4A10-25
W54-XB1A4A10-30
ORDERING NOTE:
Mounting hardware can be ordered separately. Some options are subject to extended leadtimes and significant minimum order quantities.
Termination Options
.098 ± .01
(2.5 ± 0.3)
.181
(4.6)
Option A
Standard
.250 QC
Straight
2
Revised 01-21
www.te.com
Option B
.250 QC
90°
Option C
#8-32 Screw
90°
Option D
Special
.250 QC
45°
Dimensionsareininchesover
(millimeters)unlessotherwise
specified.
Option E
.250 QC/
PCB
270°
.181
(4.6)
Option F
#8-32 Screw
45°
Option H
.250 QC Straight
with #8-32 Load
Term. Bent 90°
Dimensions are shown for reference
purposes only. Specifications and
availability subject to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
SouthAmerica:55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-8706-080208
Potter & Brumfield
Mounting Bushings and Recommended Panel Cutouts
.441+.008, -.0
(11.2+.2, -.0)
.047
(1.2)
.043
(1.1)
.338
(8.6)
.346 +.008, -.0
(8.8 +.2, -.0)
.382 +.008, -.0
(9.7 +.2, -.0)
.394+.008, -.0
(10.0+.2, -.0)
.386
(9.8)
.394
(10.0)
.496
(12.6)
.496
(12.6)
.480 +.008, -.0
(12.2 +.2, -.0)
.157
(4.0)
Option 3 & 6 – M11 X 1.0 Thread
.630.005
(16.13)
.543.005
(13.8.13)
.421 +.008, -.0
(10.7 +.2, -.0)
.413
(10.5)
.394+.008, -.0
(10.0+.2, -.0)
.386
(9.8)
Option 2 & 7 – 3/8” - 24UNF Thread
Option 1 – M11 X 1.0 Thread
.441+.008, -.0
(11.2+.2, -.0)
.157
(4.0)
.496
(12.6)
Option 4 – M12 X 1.0 Thread
Option 8 – Snap In
Mounting Hardware Options
Optional Bottom Marking of Rating
A
A
A A
A
ALTERNATE TEETH TWISTEDALTERNATE TEETH TWISTED
A
IN OPPOSITE
DIRECTIONS IN OPPOSITE DIRECTIONS
A
2 X .059 DIA.
(1.5)
B B
84°
B
B
Knurled Nut
Hex Nut
2 X .059 DIA.
(1.5)
56°
A
84°
B
Integrated Knurled Nut
with Small Holes
B
56°
A
B
B
Lockwasher
Mounting Hardware Dimensions
Dimension
Code
Bushing
Diameter
Plastic
Knurled Nut
Integrated Plastic
Knurled Nut w/Holes
Metal
Knurled Nut
Metal
Hex Nut
Lockwasher
3/8”
.74 (18.8)
–
.56 (14.2)
.55 (14.0)
.49 (12.5)
M11
.74 (18.8)
.74 (18.8)
.59 (15.0)
.55 (14.0)
.587 (14.9)
A
M12
–
–
.59 (15.0)
.55 (14.0)
.626 (15.9)
3/8”
.126 (3.2)
–
.079 (2.0)
.079 (2.0)
.02 (.5)
M11
.126 (3.2)
.13 (3.3)
.102 (2.6)
.118 (3.0)
.02 (.5)
M12
–
–
.102 (2.6)
.079 (2.0)
.02 (.5)
Plastic
Knurled Nut
Integrated Plastic
Knurled Nut w/Holes
Metal
Knurled Nut
Metal
Hex Nut
Lockwasher
B
Mounting Hardware Ordering Information
Mounting Bushing
Material
Mounting Bushing
Code
1 (M11)
–
–
6-1423730-3
6-1423730-7 1-1423696-2
2 (3/8”)
–
–
6-1423730-4
6-1423730-6
3 (M11)
–
–
6-1423730-3 6-1423730-7 1-1423696-2
6-1423730-5 6-1423730-8 1-1423696-3
Metal
1-1423696-1
4 (M12)
–
–
6 (M11)
1423696-8
2-1423696-2
–
–
–
8 (3/8”)
1423696-2
–
–
–
–
Plastic
Disclaimer
Nameplates
.854 DIA.
(21.7)
.945 DIA.
(24.0)
.016 (.4) THICK
.016 (.4) THICK
Embossed
Aluminum
Imprinted Aluminum
(Either Silver on Black
or Black on Silver)
Revised 01-21
www.te.com
Dimensionsareininchesover
(millimeters)unlessotherwise
specified.
While TE has made every reasonable effort to ensure the accuracy of the
information in this document, TE does not guarantee that it is error-free,
nor does TE make any other representation, warranty or guarantee that the
information is accurate, correct, reliable or current.
TE reserves the right to make any adjustments to the information contained
herein at any time without notice. TE expressly disclaims all implied warranties
regarding the information contained herein, including, but not limited to, any
implied warranties of merchantability or fitness for a particular purpose.
The dimensions in this catalog are for reference purposes only and are subject
to change without notice. Specifications are subject to change without notice.
Consult TE for the latest dimensions and design specifications.
Dimensions are shown for reference
purposes only. Specifications and
availability subject to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
SouthAmerica:55-11-2103-6000
Hong Kong: 852-2735-1628
3
Japan: 81-44-844-8013
UK: 44-8706-080208
