Potter & Brumfield W57 series Compact, Push To Reset Only P&B Thermal Circuit Breaker Features Insulation Resistance: 100 megohms. Maximum Operating Voltages: 250VAC, 50/60Hz 50VDC (UL Only) New, compact design. Interrupt Capacity: 1,000 amps in accordance with UL standard 1077. 3 to 20 amp ratings. Cannot be manually tripped. Resettable Overload Capacity: Ten times rated current. Button extends for visual trip indication. Reset Time: 60 seconds. Push button to reset breaker. Numerous mounting and termination options. Typical Resistance vs. Current Rating +25C Optional bottom marking of amperage rating. Current Typical Current Typical Agency Approvals Rating Resistance Rating Resistance in Amps in Ohms in Amps in Ohms W57 series is UL1077 Recognized as Supplementary Protectors, File E69543, for Canada and the United States. Available models 3.0 0.083 8.0 0.031 meet Ignition Protection requirements in accordance with UL1500. 4.0 0.062 10.0 0.025 Approved to VDE 0642/EN60934 (Circuit Breakers for Equipment) 5.0 0.050 12.0 0.021 License Number 40007874 (excludes models rated 3-4A and >15A). 6.0 0.042 15.0 0.017 CCC mark compliant, certificate 2004010307123217. 7.0 0.036 20.0 0.012 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 Mechanical/Environmental Data of the agencies/labora-tories and review them to confirm the product meets the Operating Temperature Range: 0C to +60C. requirements for a given application. Termination: .250 (6.35mm) quick connects. Mounting: Various options. See Ordering Information and drawings. Approximate Weight: 0.5 oz. (14.3g). Electrical Data 25C Calibration: Will continuously carry 100% of rating. Outline Dimensions May trip between 101% and 134%, but must trip at 135% of rating within one hour at +25C. Dielectric Strength: 1,500VAC (60 seconds). Time vs. Current Trip Curve +25C 1000 Overload Trip Times 100% No Trip 900 135% Trip in 1 hour 200% 4.0 - 40.0 Sec. 800 300% 1.2 - 12.0 Sec. 400% 0.6 - 5.0 Sec. 700 500% 0.4 - 2.8 Sec. 600% 0.3 - 1.8 Sec. 600 800% 0.18 - 0.9 Sec. 1000% 0.12 - 0.7 Sec. 500 400 300 Optional Protective Boot Silicone rubber boot is bonded to integral metal nut. 200 135 100 1-1423696-5 .63 DIA. Black boot for W57 with 0 (16.0) .1 110100 1000 10,000 3/8-24 bushing. Time In Seconds .622 (15.8) Ambient Compensation Table Ambient Rating Correction Factor 1-1423696-6 .70 DIA. Temperature To use this chart: Divide the breaker Clear boot for W57 with (17.8) in C 3-4A Models 5-20A Models rating by the correction factor to M11 X 1.0 bushing. determine the compensated rating. -10 .70 .77 .799 Calculate the overloads in terms of 0 .75 .85 (20.3) the compensated rating to use the 10 .82 .90 published trip curve. 20 .90 .95 Do not use these devices outside 25 1.00 1.00 1-1423000-1 their specified operating temperature 30 1.10 1.05 Clear boot for W57 with ranges. 40 1.25 1.15 M11 X 1.0 bushing. 50 1.61 1.25 60 2.15 1.40 Revised 01-21 Dimensions are in inches over Dimensions are shown for reference South America: 55-11-2103-6000 USA: 1-800-522-6752 www.te.com (millimeters) unless otherwise purposes only. Specifications and Hong Kong: 852-2735-1628 Canada: 1-905-470-4425 1 specified. availability subject to change. Japan: 81-44-844-8013 Mexico: 01-800-733-8926 UK: 44-8706-080208 C. America: 52-55-1106-0803 Load Current As A Percent Of Breaker RatingPotter & Brumfield Ordering Information Typical Part No. > W 57 -X B 1 A 4 A 1 0 -4 1. Designator: W = Circuit breaker 2. Series Number: 57 = Compact, Single Pole, Push-to-Reset, Thermal Model 3. Circuit Function: X = Series Trip 4. Button Color & Rate Marking: A = White, plain, no rate marking G = White, black rate marking (horizontal) B = White, red rate marking (vertical) H = Black, white rate marking (vertical) C = White, black rate marking (vertical) I = Red, plain, no rate marking D = Black, plain, no rate marking J = Black, no rate marking on button, E = Black, white rate marking (horizontal) white rate marking on bottom of F = White, red rate marking (horizontal) case between terminals. 5. Mounting Bushing: 1 = Plastic, 9.8mm (double D) X 9.6mm long, M11x1 threads, (similar to 7/16), hex base 2 = Plastic, 3/8 (single D) x 10.5mm long, 3/8x24 threads, hex base 4 = Plastic, snap-in type 5 = Metal, 9.8mm (double D) X 9.6mm long, M11x1 threads, (similar to 7/16), round base 6 = Metal, 3/8 (single D) x 10.5mm long, 3/8x24 threads, hex base 7 = Metal, 10.8mm (double D) x 9.6mm long, M12x1 threads, (similar to 15/32), round base 8 = Metal, 3/8 (double D) x 10.0mm long, 3/8x24 threads, hex base Notes: Codes 1 and 3 are similar in size to 7/16 bushings (not exact equivalent). Code 7 is similar in size to a 15/32 bushing (not exact equivalent) 6. Terminals: (see drawings for detail) A = Quick connect .250 (6.35mm) straight B = Quick connect .250 (6.35mm) , bent 90 C = Quick connect .250 (6.35mm) , bent 45 D = Quick connect .250 (6.35mm) , bent 90 E = Quick connect .250 (6.35mm) , bent 90, PCB compatible F = Quick connect .250 (6.35mm) , bent 90, PCB compatible G = Quick connect .250 (6.35mm) , straight (smaller hole) H = One quick connect .250 (6.35mm) , one 8-32 screw bent 90 I = Same as F above, but amperage marking reversed. 7. Mounting Hardware: 4 = Metal knurled nut/hex nut 7 = Plastic knurled nut 6 = Metal hex nut 8 = Plastic knurled nut with small hole 12 = Metal knurled nut 22 = Plastic knurled nut, metal lockwasher 15 = 2 metal hex nuts, metal lockwasher 18 = Metal hex 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/50VDC 2 = 125VAC/50VDC *DC RATING APPLY TO UL ONLY 10. Nameplate: 0 = None 1 = Embossed aluminum 2 = Silver color printing on black color 3 = Black color printing on silver color 11. Specify Amp Rating: 3 4 5 6 7 8 10 12 15 20 Not VDE 12. UL Recognition: Leave Blank = UL1077 recognized breaker M = Model meeting Ignition Protection requirements in accordance with UL1500, in addition to UL1077 recognition Not VDE Our authorized distributors are more likely to stock the following items for immediate delivery. W57-XB1A4A10-5 W57-XB1A4A10-15 W57-XB1A7A10-5 W57-XB1A7A10-15 W57-XB1A4A10-10 W57-XB1A4A10-20 W57-XB1A7A10-10 W57-XB1A7A10-20 ORDERING NOTE: Mounting hardware can be ordered separately. Some options are subject to extended leadtimes and significant minimum order quantities. Mounting Bushings and Recommended Panel Cutouts .338 .630.005 .346 +.008, -.0 (8.6) .441+.008, -.0 (16.13) (8.8 +.2, -.0) .059 .043 (11.2+.2, -.0) (1.5) (1.1) .543.005 .394+.008, -.0 .386 .382 +.008, -.0 (13.8.13) (10.0+.2, -.0) (9.8) (9.7 +.2, -.0) .378 .394 (9.6) (10.0) Option 1 M11 X 1.0 Thread Option 2 & 6 3/8 - 24UNF Thread Option 4 Snap In Option .441+.008, -.0 .480 +.008, -.0 .382 +.008, -.0 .059 (11.2+.2, -.0) (12.2 +.2, -.0) .059 .043 (9.7 +.2, -.0) (1.5) (1.5) (1.1) .433 +.008, -.0 .394+.008, -.0 .425 .386 .303 .311 +.008, -.0 (11.0 +.2, -.0) (10.0+.2, -.0) (10.8) (9.8) (7.7) (7.9 +.2, -.0) .378 .378 .394 (9.6) (9.6) (10.0) Option 8 3/8 - 24UNF Thread Option 5 M11 X 1.0 Thread Option 7 M12 X 1.0 Thread Revised 01-21 Dimensions are in inches over Dimensions are shown for reference South America: 55-11-2103-6000 USA: 1-800-522-6752 www.te.com (millimeters) unless otherwise purposes only. Specifications and Hong Kong: 852-2735-1628 Canada: 1-905-470-4425 2 specified. availability subject to change. Japan: 81-44-844-8013 Mexico: 01-800-733-8926 UK: 44-8706-080208 C. America: 52-55-1106-0803