NSN: 5925-01-258-8734

Technical Characteristics

• Bushing Length

  0.380 inches maximum

• Fragility Factor

  moderately rugged

• Nonturn Device Diameter

  0.250 inches nominal

• Pole Quantity

  3

• Circuit Protection Type

  overcurrent all locations

• Reset Method

  manual

• Center To Center Distance Between Terminals Parallel To Width

  0.594 inches minimum and 0.656 inches maximum

• Mounting Facility Type And Quantity

  1 threaded bushing w/panel seal

• Storage Type

  general purpose warehouse

• Actuator Function

  trip-reset

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

  300.0 ac all locations and 500.0 dc all locations

• Thread Pitch Diameters

  +0.3503/+0.3537 inches

• Operating Voltage Type And Rating Per Pole In Volts

  240.0 ac all locations and 50.0 dc all locations

• Nominal Thread Size

  0.375 inches

• Thread Quantity Per Inch

  32

• Maximum Continuous Load Current Rating Per Pole

  20.0 amperes ac all locations and 20.0 amperes dc all locations

• Trip Release Method

  magnetic-hydraulic all locations

• Auxiliary Trip Coil Voltage Type And Rating In Volts

  18.0 dc minimum second location

• Special Features

  relay trip coil at pole 2 rated 250 milliampere nominal

• Mounting Surface To Terminal End Distance

  1.780 inches maximum

• Internal Trip Release Configuration

  series trip first location

• Internal Trip Release Configuration

  series/relay trip second location

• Circuit Protection Type

  undervoltage second location

• Trip Release Characteristic

  time delay first location

• Actuator Position Designation

  at pole two

• Nonturn Device Location

  at 3 oclock and at 9 oclock

• Body Style

  multipole-single actuator type

• Case Material

  metal

• Manual Actuator Type And Quantity

  1 toggle

• Body Length

  1.500 inches maximum

• Internal Trip Release Configuration

  series trip third location

• Main Contact Tripping Mechanism Type

  trip free

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

  115.0 all locations

• Arc Quenching Method

  magnetic blowout

• Trip Release Characteristic

  time delay third location

• Trip Delay Time In Seconds Per Rated Continuous Current

  0.080 minimum at 200 pct all locations and 0.600 maximum at 200 pct all locations

• Trip Release Characteristic

  instantaneous second location and time delay second location

• Frequency In Hertz

  400.0 all locations

• Thread Series Designator

  unef

• Inclosure Protection Type For Which Designed

  shock resistant and hermetically sealed and vibration resistant

• Center To Center Distance Between Terminals Parallel To Length

  0.844 inches minimum and 0.906 inches maximum

• Body Width

  1.875 inches maximum

• Terminal Type And Quantity

  6 wire hook