Catalog 1308242 Issued 4-15 (PDF Rev. 04-15) Potter & Brumfield W57 series Compact, Push To Reset Only P&B Thermal Circuit Breaker Features Insulation Resistance: 1 00 megohms. Maximum Operating Voltages: 50VDC; 250VAC, 50/60 Hz. Interrupt Capacity: 1 ,000 amps in accordance with UL standard 1077. Resettable Overload Capacity: T en times rated current. Reset Time: 60 seconds. * New, compact design. * 3 to 20 amp ratings. * Cannot be manually tripped. * Button extends for visual trip indication. * Push button to reset breaker. * Numerous mounting and termination options. * Optional bottom marking of amperage rating. Typical Resistance vs. Current Rating @ +25C Agency Approvals W57 series is UL1077 Recognized as Supplementary Protectors, File E69543, for Canada and the United States. Available models meet Ignition Protection requirements in accordance with UL1500. Approved to VDE 0642/EN60934 (Circuit Breakers for Equipment) License Number 40007874 (excludes models rated 3-4A and >15A). CCC mark compliant, certificate 2004010307123217. Current Rating in Amps Typical Resistance in Ohms Current Rating in Amps Typical Resistance in Ohms 3.0 4.0 5.0 6.0 7.0 0.083 0.062 0.050 0.042 0.036 8.0 10.0 12.0 15.0 20.0 0.031 0.025 0.021 0.017 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 of the agencies/labora-tories and review them to confirm the product meets the requirements for a given application. Mechanical/Environmental Data Electrical Data @ 25C Operating Temperature Range: 0C to +60C. Termination: .250" (6.35mm) quick connects. Mounting: Various options. See Ordering Information and drawings. Approximate Weight: 0.5 oz. (14.3g). Calibration: Will continuously carry 100% of rating. May trip between 101% and 134%, but must trip at 135% of rating within one hour at +25C. Dielectric Strength: 1,500VAC (60 seconds). Outline Dimensions Time vs. Current Trip Curve @ +25C 1000 Overload 100% 135% 200% 300% 400% 500% 600% 800% 1000% 900 Load Current As A Percent Of Breaker Rating 800 700 600 500 Trip Times No Trip Trip in 1 hour 4.0 - 40.0 Sec. 1.2 - 12.0 Sec. 0.6 - 5.0 Sec. 0.4 - 2.8 Sec. 0.3 - 1.8 Sec. 0.18 - 0.9 Sec. 0.12 - 0.7 Sec. .465 (11.8) .889 (22.6) .303 (7.7) 1.15 .689 (29.2) (17.5) SEE TERMINAL DRAWINGS FOR DETAIL .031 .102 (.8) (2.6) 400 300 .457 (11.6) SEE MOUNTING BUSHING AND MOUNTING HARDWARE DRAWINGS FOR DETAIL .575 (14.6) 200 135 100 0 .1 1 10 100 Time In Seconds 1000 10,000 Ambient Compensation Table Ambient Temperature in C -10 0 10 20 25 30 40 50 60 Revised 04-15 www.te.com 5-20A Models .77 .85 .90 .95 1.00 1.05 1.15 1.25 1.40 Dimensionsareininchesover (millimeters)unlessotherwise specified. Silicone rubber boot is bonded to integral alumimum nut. 1-1423696-5 Black boot for W57 with 3/8"-24 bushing. .63 DIA. (16.0) Rating Correction Factor 3-4A Models .70 .75 .82 .90 1.00 1.10 1.25 1.61 2.15 Optional Protective Boot 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) 1-1423696-6 Clear boot for W57 with M11 X 1.0 bushing. .70 DIA. (17.8) .799 (20.3) 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 Catalog 1308242 Issued 4-15 (PDF Rev. 04-15) Potter & 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 B = White, red rate marking (vertical) C = White, black rate marking (vertical) D = Black, plain, no rate marking E = Black, white rate marking (horizontal) F = White, red rate marking (horizontal) G = White, black rate marking (horizontal) H = Black, white rate marking (vertical) I = Red, plain, no rate marking J = Black, no rate marking on button, white rate marking on bottom of 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, 3/8"x24 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, 3/8"x24 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, 3/8"x24 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 6 = Metal hex nut 12 = Metal knurled nut 15 = 2 metal hex nuts, metal lockwasher 18 = Metal hex nut, metal lockwasher 8. Mounting Hardware Packaging: A = Assembled to bushing 7 = Plastic knurled nut 8 = Plastic knurled nut with small hole 22 = Plastic knurled nut, metal lockwasher 99 = None B = Bulk unassembled C = No mounting hardware. 9. Maximum Operating Voltage (AC): 1 = 250VAC 2 = 125VAC/50VDC 10. Nameplate: 0 = None 1 = Embossed aluminum 11. Specify Amp Rating: 34 5 6 7 2 = Silver color printing on black color 8 10 12 15 3 = Black color printing on silver color 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-XB1A4A10-10 ORDERING NOTE: W57-XB1A4A10-15 W57-XB1A4A10-20 W57-XB1A7A10-5 W57-XB1A7A10-10 W57-XB1A7A10-15 W57-XB1A7A10-20 Mounting hardware can be ordered separately. Some options are subject to extended leadtimes and significant minimum order quantities. Mounting Bushings and Recommended Panel Cutouts .059 (1.5) .441+.008, -.0 (11.2+.2, -.0) .378 (9.6) .441+.008, -.0 (11.2+.2, -.0) .543.005 (13.8.13) .382 +.008, -.0 (9.7 +.2, -.0) Option 2 & 6 - 3/8" - 24UNF Thread .059 (1.5) .394+.008, -.0 (10.0+.2, -.0) .386 (9.8) .480 +.008, -.0 (12.2 +.2, -.0) .425 (10.8) Option 5 - M11 X 1.0 Thread Dimensionsareininchesover (millimeters)unlessotherwise specified. Option 4 - Snap In Option .043 (1.1) .433 +.008, -.0 (11.0 +.2, -.0) .378 (9.6) .378 (9.6) Revised 04-15 www.te.com .630.005 (16.13) .346 +.008, -.0 (8.8 +.2, -.0) .394 (10.0) Option 1 - M11 X 1.0 Thread 2 .338 (8.6) .394+.008, -.0 (10.0+.2, -.0) .386 (9.8) .059 (1.5) .043 (1.1) .382 +.008, -.0 (9.7 +.2, -.0) .303 (7.7) .311 +.008, -.0 (7.9 +.2, -.0) .394 (10.0) Option 7 - M12 X 1.0 Thread Dimensions are shown for reference purposes only. Specifications and availability subject to change. Option 8 - 3/8" - 24UNF Thread 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 Catalog 1308242 Issued 4-15 (PDF Rev. 04-15) Potter & Brumfield Termination Options .126.126 (3.2) (3.2) Option A .250 QC Straight .01 .154.154 .01 .01 .154 .01 .098.098 .01 .098 .01 3) 0.3) .126 (3.9(3. 90. .181 .126.126 .181 3) 0.3).181.181 (2.5 0.3) .181 (3. 9 0.3) ( 5(2. 50. .181 .2. 126 (3.2)(3.2) (4.6) (2. D IA. .110 (2.8) D8) IA. (3.2) (4.6) (4.6)(4.6) 110 (( 2. 8) DD8) II A. (4. 6) .110 (1. D IA. 071.071 1. 8) A. (3.2) (4.6) .. Option C .250 QC 45 Option D .250 QC 90 Option E .250 QC/PCB 270 Option B .250 QC 90 A A A ALTERNATE TEETH TWISTEDALTERNATE TEETH TWISTED A IN OPPOSITE DIRECTIONS IN OPPOSITE DIRECTIONS A 2 X .059 DIA. (1.5) B B Hex Nut 2 X .059 DIA. (1.5) 84 B B Knurled Nut Option H .250 QC Straight with #8-32 Load Term. Bent 90 Optional Bottom Marking of Rating Mounting Hardware Options A A .071 (1.8)D IA. Option G .250 QC Straight (small hole) Option F or I .250 QC/PCB 270 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) A M11 .74 (18.8) .74 (18.8) .59 (15.0) .55 (14.0) .587 (14.9) M12 - - .59 (15.0) .55 (14.0) .626 (15.9) 3/8" .126 (3.2) - .079 (2.0) .079 (2.0) .02 (.5) B M11 .126 (3.2) .13 (3.3) .102 (2.6) .118 (3.0) .02 (.5) M12 - - .102 (2.6) .079 (2.0) .02 (.5) Integrated Plastic Knurled Nut w/Holes Metal Knurled Nut Metal Hex Nut Lockwasher - Mounting Hardware Ordering Information Mounting Bushing Material Mounting Bushing Code Plastic Knurled Nut Plastic 1 (M11) - 1423696-8 2-1423696-2 - 2 (3/8") - 1423696-2 - - - 5 (M11) - - 1423696-4 1423696-6 1-1423696-2 Metal 6 (3/8") - - 1-1423696-0 1423696-3 1-1423696-1 7 (M12) - - 1423696-5 1423696-7 1-1423696-3 8 (3/8") - - 1-1423696-0 1423696-3 1-1423696-1 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 04-15 www.te.com Dimensionsareininchesover (millimeters)unlessotherwise specified. 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