112 p&b dimensions are shown for reference purposes only. dimensions are in inches over (millimeters) unless otherwise specified. specifications and availability subject to change. www.tycoelectronics.com technical support: refer to inside back cover. time vs. current trip curve @ +25? overload trip times 100% 135% 200% 300% 400% 500% 600% 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. .1 1 10 100 1000 time in seconds 1000 900 800 700 600 500 400 300 200 100 0 load current as a percent of breaker rating 10,000 135 features ?compact, trip-free, rocker-actuated design. ?5 to 20 amp ratings. ?provides circuit protection and power switching in a single unit. ?available with optional indicator lamp. ?snaps into the same cutout as many common power switches. ?various color, marking and termination options. electrical data @ 25? 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?. dielectric strength: 1,500vac (60 seconds). insulation resistance: 100 megohms. maximum operating voltages: 50vdc; 125 or 250vac, 50/60 hz. (model dependent). mechanical/environmental data operating temperature range: 0? to +60?. termination: .250?(6.35mm) quick connects, solder terminals or right angle pc terminals. mounting: snaps into 1.122 x .531 (28.5 x 13.5) panel cutout. approximate weight: 0.37 oz. (10.5g). current typical current typical rating resistance rating resistance in amps in ohms in amps in ohms 5.0 0.050 10.0 0.025 6.0 0.042 15.0 0.017 7.0 0.036 20.0 0.0125 8.0 0.031 .827 (21.0) .858 (21.8) 1.260 (32.0) 1.232 (31.3) .315 (8.0) .394 (10.0) .598 (15.2) .25 (6.35) .504 (12.8) .394 (10.0) .354 (9.0) typ. .031 (0.8) typ. 1.098 (27.9) 1.311 (33.3) .079 (2.0) .118 (3.0) 1.122 (28.5) .531 (13.5) suggested panel cutout recommended panel cutout panel thickness w51 series circuit breakers accommodate panel thicknesses from 0.030 in. to 0.118 in. (0.75 mm - 3.0 mm). agency approvals w51 series is ul 1077 recognized as supplementary protectors, file e69543, for canada and the united states. approved to vde 0642/en60934 (circuit breakers for equipment) license number 40017023 (for ac loads only). ccc mark compliant, certificate 2004010307123223. 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 ensure the product meets the requirements for a given application. outline dimensions w51 series rocker-actuated thermal circuit breaker/power switch with optional indicator lamp interrupt capacity: 1,000 amps in accordance with ul standard 1077. resettable overload capacity: ten times rated current. switch endurance cycling: typically 6,000 operations at 100% of rating. reset time: 60 seconds. typical resistance vs. current rating @ +25? ambient compensation table 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. ambient rating correction factor temperature in ? 5-6a models 7-20a models 10 .80 .80 20 .90 .90 2 5 1. 0 0 1. 0 0 30 1.10 1.05 40 1.25 1.15 50 1.61 1.25 60 2.15 1.40 catalog 1308242 issued 3 - 03 (pdf revised 6- 13 )
113 p&b dimensions are shown for reference purposes only. dimensions are in inches over (millimeters) unless otherwise specified. specifications and availability subject to change. www.tycoelectronics.com technical support: refer to inside back cover. terminal types angular button design contoured button design for contoured button design (molded) for angular button design (printed) our authorized distributors are more likely to stock the following items for immediate delivery. ordering information ordering note: some options illustrated below are not listed in the ordering information?chart above. options denoted by ?pecial?or ?pecial order?in their descriptions are only offered on a special order basis. other base and button colors and intermediate amp ratings are also available on a special order basis. all special order items are subject to extended leadtimes and significant minimum order quantities. your tyco electronics sales engineer must consult with the factory before providing price and availability information regarding items with these options. typical part no. b b w51-a121b1-5 1. designator: w = circuit breaker 2. series number: 51 = switchable, single pole, rocker-actuated thermal model 3. terminals: a = quick connect .250?(6.35mm) straight c = printed circuit - right angle 4. breaker style & base color: 1 = angular button design (see drawing below), black base color b = countoured button design (see drawing below), black base color 5. rocker color: 1 = amber (translucent) 2 = red (translucent) 3 = green (translucent) 4 = white (opaque - for use on non-illuminated models) 5 = black (opaque - for use on non-illuminated models) 6 = red (opaque - for use on non-illuminated models) 7 = gray (opaque - for use on non-illuminated models) 8 = black (opaque) with red (translucent) indicator (only available on model with contoured button) 9 = black (opaque) with green (translucent) indicator (only available on model with contoured button) 6. maximum operating voltage (ac): 1 = 125vac 2 = 250vac 7. light: a = non-illuminated b = illuminated 8. marking option: 0 = no marking 2 = reset/off molded (only available on model with contoured button) 1 = reset/off printed 9. specify amp rating: 5678 101520 standard .250 quick connect terminal standard - reset/off standard - reset/off printed on bezel standard - reset/off standard - reset/off molded into bezel standard - no marking .374 (9.5) .393 (10.0) .205 (5.2) .25 (6.35) .393 (10.0) .25 (6.35) .157 x .098 (4.0 x 2.5) .098 x .157 (2.5 x 4.0) .298 (7.55) .504 (12.8) .66 (16.76) .250 (6.35) .156 (3.95) .601 (15.26) terminal thickness for all types .032 (.81) special order - solder terminal special order - solder terminal standard right angle pc terminal case styles marking options w51-a121b1-5 w51-a121b1-10 w51-a121b1-15 w51-a121b1-20 w51-a122b1-5 w51-a122b1-10 w51-a122b1-15 w51-a122b1-20 w51-a152a1-5 w51-a152a1-10 w51-a152a1-15 w51-a152a1-20 catalog 1308242 issued 3 - 03 (pdf revised 6- 13 )
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