AP1-4-4-2-251

Technical Characteristics

• Trip Release Method

  magnetic single location

• Terminal Type And Quantity

  2 wire hook

• Special Handling Feature

  magnetic

• Fragility Factor

  moderately rugged

• Reset Method

  manual

• Actuator Position Designation

  at pole one

• Storage Type

  general purpose warehouse

• Actuator Function

  trip-reset

• Thread Pitch Diameters

  +0.3503/+0.3537 inches

• Trip Delay Time In Seconds Per Rated Continuous Current

  1.000 minimum at 200 pct single location and 4.000 maximum at 200 pct single location

• Nominal Thread Size

  0.375 inches

• Maximum Continuous Load Current Rating Per Pole

  250.0 milliamperes ac single location

• Thread Quantity Per Inch

  32

• Inclosure Protection Type For Which Designed

  explosion resistant and hermetically sealed

• Circuit Protection Type

  overcurrent single location

• Mounting Facility Type And Quantity

  1 threaded bushing

• Operating Voltage Type And Rating Per Pole In Volts

  250.0 ac single location

• Body Length

  1.495 inches nominal

• Center To Center Distance Between Terminals Parallel To Length

  0.875 inches nominal

• Pole Quantity

  1

• Mounting Surface To Terminal End Distance

  1.555 inches nominal

• Case Material

  metal

• Manual Actuator Type And Quantity

  1 toggle

• Internal Trip Release Configuration

  series trip single location

• Trip Release Characteristic

  time delay single location

• Main Contact Tripping Mechanism Type

  trip free

• Arc Quenching Method

  magnetic blowout

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

  300.0 ac single location

• Bushing Length

  0.375 inches nominal

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

  115.0 single location

• Frequency In Hertz

  400.0 single location

• Body Style

  single pole type

• Thread Series Designator

  unef

• Body Width

  0.598 inches nominal