121B20-B2M
Circuit Breakers
CIRCUIT BREAKER
121B20-B2M
CIRCUIT BREAKER
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Technical Characteristics
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Body Style
single pole type
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Overall Width
0.790 inches nominal
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Reset Method
automatic
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Internal Trip Release Configuration
series trip all locations
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Nominal Thread Size
0.190 inches
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Trip Release Duty Cycle
continuous all locations
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Trip Release Ambient Temp Rating
-40.0 deg fahrenheit minimum all locations and 185.0 deg fahrenheit maximum all locations
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Part Name Assigned By Controlling Agency
series 12x shortstop circuit breaker,20amp dc
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Thread Series Designator
unf
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Body Length
1.240 inches nominal
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Body Width
0.790 inches nominal
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Body Height
0.640 inches nominal
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Case Material
metal
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Center To Center Distance Between Terminals Parallel To Length
0.690 inches nominal
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Unthreaded Mounting Hole Diameter
0.196 inches nominal
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Distance Between Centerlines Of Mounting Facilities Parallel To Body Length
1.560 inches nominal
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Boss Height
0.560 inches nominal
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Mounting Surface To Terminal End Distance
1.250 inches nominal
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Pole Quantity
1
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Mounting Facility Type And Quantity
2 unthreaded hole
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Thread Quantity Per Inch
32
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Maximum Continuous Load Current Rating Per Pole
20.0 amperes dc all locations
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Operating Voltage Type And Rating Per Pole In Volts
14.0 dc all locations and 28.0 dc all locations
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Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
1.5 dc all locations
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Circuit Protection Type
overcurrent all locations
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Trip Release Method
thermal all locations
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Trip Release Characteristic
time delay all locations