78-166-1

Technical Characteristics

• Maximum Continuous Load Current Rating Per Pole

  250.0 milliamperes ac second location

• Circuit Protection Type

  overcurrent all locations

• Pole Quantity

  2

• Reset Method

  manual

• Center To Center Distance Between Terminals Parallel To Width

  0.625 inches nominal

• Actuator Function

  trip-reset

• Trip Delay Time In Seconds Per Rated Continuous Current

  0.055 minimum at 200 pct all locations and 0.950 maximum at 200 pct all locations and 0.240 maximum at 400 pct all locations

• Mounting Surface To Terminal End Distance

  1.828 inches maximum

• Internal Trip Release Configuration

  series trip all locations

• Trip Release Characteristic

  instantaneous all locations and time delay all locations

• Nominal Thread Size

  0.375 inches

• Thread Quantity Per Inch

  32

• Operating Voltage Type And Rating Per Pole In Volts

  240.0 ac all locations

• Trip Release Method

  magnetic all locations

• Mounting Facility Type And Quantity

  1 threaded bushing

• Inclosure Protection Type For Which Designed

  hermetically sealed

• Terminal Type And Quantity

  4 wire hook

• Center To Center Distance Between Terminals Parallel To Length

  0.875 inches nominal

• Body Style

  multipole-single actuator type

• Case Material

  metal

• Manual Actuator Type And Quantity

  1 toggle

• Frequency In Hertz

  60.0 all locations

• Actuator Position Designation

  between pole one and two

• Main Contact Tripping Mechanism Type

  trip free

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

  115.0 all locations

• Body Length

  1.562 inches maximum

• Bushing Length

  0.390 inches minimum and 0.565 inches maximum

• Thread Series Designator

  unef

• Body Width

  1.281 inches maximum

• Maximum Continuous Load Current Rating Per Pole

  18.0 amperes ac first location

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

  300.0 ac all locations