121B20-B2M

Technical Characteristics

• Body Style

  single pole type

• Overall Width

  0.790 inches nominal

• Reset Method

  automatic

• Internal Trip Release Configuration

  series trip all locations

• Nominal Thread Size

  0.190 inches

• Trip Release Duty Cycle

  continuous all locations

• Trip Release Ambient Temp Rating

  -40.0 deg fahrenheit minimum all locations and 185.0 deg fahrenheit maximum all locations

• Part Name Assigned By Controlling Agency

  series 12x shortstop circuit breaker,20amp dc

• Thread Series Designator

  unf

• Body Length

  1.240 inches nominal

• Body Width

  0.790 inches nominal

• Body Height

  0.640 inches nominal

• Case Material

  metal

• Center To Center Distance Between Terminals Parallel To Length

  0.690 inches nominal

• Unthreaded Mounting Hole Diameter

  0.196 inches nominal

• Distance Between Centerlines Of Mounting Facilities Parallel To Body Length

  1.560 inches nominal

• Boss Height

  0.560 inches nominal

• Mounting Surface To Terminal End Distance

  1.250 inches nominal

• Pole Quantity

  1

• Mounting Facility Type And Quantity

  2 unthreaded hole

• Thread Quantity Per Inch

  32

• Maximum Continuous Load Current Rating Per Pole

  20.0 amperes dc all locations

• Operating Voltage Type And Rating Per Pole In Volts

  14.0 dc all locations and 28.0 dc all locations

• Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps

  1.5 dc all locations

• Circuit Protection Type

  overcurrent all locations

• Trip Release Method

  thermal all locations

• Trip Release Characteristic

  time delay all locations