NSN: 5925-00-957-2897

Technical Characteristics

• Body Style

  21b multipole-single actuator type

• Body Length

  10.125 inches nominal

• Body Width

  8.250 inches nominal

• Case Material

  plastic

• Distance Between Centerlines Of Mounting Facilities Parallel To Body Length

  7.750 inches nominal

• Distance Between Centerlines Of Mounting Facilities Parallel To Body Width

  2.750 inches nominal

• Pole Quantity

  3

• Mounting Facility Type And Quantity

  4 unthreaded hole

• Maximum Continuous Load Current Rating Per Pole

  350.0 amperes ac all locations

• Circuit Protection Type

  undervoltage all locations

• Trip Release Characteristic

  instantaneous all locations

• Ultimate Trip Time Per Pole In Seconds

  2.000 nominal all locations

• Manual Actuator Type And Quantity

  1 toggle

• Actuator Function

  trip-reset

• Actuator Position Designation

  at pole two

• External Actuator Linkage Arrangement

  one, two, and three linked

• Reset Actuator Voltage Rating And Type In Volts

  125.0 ac and 125.0 dc

• Manufacturers Code

  4a300

• Body Height

  3.813 inches nominal

• Center To Center Distance Between Terminals Parallel To Length

  9.375 inches nominal

• Center To Center Distance Between Terminals Parallel To Width

  2.750 inches nominal

• Unthreaded Mounting Hole Diameter

  0.390 inches nominal

• Boss Height

  0.469 inches nominal

• Operating Voltage Type And Rating Per Pole In Volts

  600.0 ac all locations

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

  22000.0 ac all locations

• Trip Release Method

  thermal-magnetic all locations

• Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent

  130.0 all locations

• Reset Method

  electric and manual

• Main Contact Tripping Mechanism Type

  trip free

• Auxiliary Switch Function And Quantity

  3 control

• Trip Release Ambient Temp Rating

  50.0 deg celsius nominal all locations

• Frequency In Hertz

  50.0 or 60.0 all locations

• Design Control Reference

  343l695mcg1

• Terminal Type And Quantity

  6 compression