Catalog 1308242
Issued 3-03 (PDF Revised 3-09)
W54 series
Push To Reset Only
P&B Thermal Circuit Breaker
Insulation Resistance: 100 megohms.
Features
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.
• 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
Agency Approvals
Current
Rating
in Amps
Typical
Resistance
in Ohms
Current
Rating
in Amps
Typical
Resistance
in Ohms
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
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
7.0
8.0
10.0
12.0
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.
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).
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
Outline Dimensions
.118 DIA
1000
.465
(11.8)
1.22
(31.0)
.157 MAX.
(4.0)
(3.0)
Overload
Trip Times
CLOSED
POSITION
100%
135%
200%
300%
400%
500%
600%
800%
1000%
No Trip
Trip in 1 hour
5.0 - 30.0 Sec.
1.8 - 7.6 Sec.
1.0 - 4.5 Sec.
0.6 - 3.0 Sec.
0.4 - 2.2 Sec.
0.2 - 1.2 Sec.
0.15 - 0.8 Sec.
900
800
700
600
500
400
300
200
.303
(7.7)
.846
(21.5)
1.378
(35.0)
SEE MOUNTING
BUSHING AND
MOUNTING HARDWARE
DRAWINGS FOR DETAIL
SEE TERMINAL DRAWINGS
FOR DETAIL
.031 .102
(.8) (2.6)
.575
(14.6)
135
100
Optional Protective Boot
Silicone rubber boot is bonded to integral alumimum nut.
0
10,000
.1
1
10
100
1000
Time In Seconds
1-1423696-5
.63 DIA.
(16.0)
Ambient Compensation Table
Black boot for W54 with
3/8”-24 bushing.
Ambient
Temperature
in °C
Rating Correction Factor
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.
.622
(15.8)
5-8A Models 9-30A Models
10
20
25
30
40
50
60
.90
.98
1.00
1.10
1.25
1.61
2.00
.80
.90
1.00
1.05
1.15
1.31
1.55
1-1423696-6
.70DIA.
(17.8)
Clear boot for W54 with
M11 X 1.0 bushing.
.799
(20.3)
Revised 3-09
www.tycoelectronics.com
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Dimensions are shown for reference
purposes only. Specifications and
availability subject to change.
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
1
UK: 44-8706-080208
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