78-158-1

Technical Characteristics

• Bushing Length

  0.280 inches minimum and 0.380 inches maximum

• Body Width

  1.987 inches maximum

• Case Material

  metal

• Center To Center Distance Between Terminals Parallel To Length

  0.906 inches nominal

• Center To Center Distance Between Terminals Parallel To Width

  0.625 inches nominal

• Fragility Factor

  moderately rugged

• Mounting Facility Type And Quantity

  1 threaded bushing w/panel seal

• Special Handling Feature

  magnetic

• Maximum Continuous Load Current Rating Per Pole

  500.0 milliamperes dc second location

• Operating Voltage Type And Rating Per Pole In Volts

  24.0 dc second location

• Operating Voltage Type And Rating Per Pole In Volts

  250.0 ac first location

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

  500.0 ac first location

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

  750.0 dc second location

• Circuit Protection Type

  overcurrent all locations

• Trip Release Method

  magnetic-hydraulic all locations

• Trip Release Characteristic

  instantaneous second location

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

  115.0

• Reset Method

  manual

• Main Contact Tripping Mechanism Type

  trip free

• Actuator Position Designation

  between pole one and two

• Nominal Thread Size

  0.375 inches

• Inclosure Protection Type For Which Designed

  hermetically sealed and shock resistant and vibration resistant

• Precious Material And Location

  contact surfaces silver

• Thread Series Designator

  unef

• Terminal Type And Quantity

  6 wire hook

• Body Style

  1b multipole-single actuator type

• Body Length

  1.562 inches maximum

• Mounting Surface To Terminal End Distance

  1.828 inches maximum

• Pole Quantity

  2

• Storage Type

  general purpose warehouse

• Thread Quantity Per Inch

  32

• Maximum Continuous Load Current Rating Per Pole

  20.0 amperes ac first location

• Trip Release Characteristic

  time delay first location

• Manual Actuator Type And Quantity

  1 toggle

• Actuator Function

  trip-reset

• Internal Trip Release Configuration

  relay trip all locations

• Trip Delay Time In Seconds Per Rated Continuous Current

  0.500 minimum at 200 pct and 9.000 maximum at 200 pct first location

• Frequency In Hertz

  400.0

• Unpackaged Unit Weight

  3.500 ounces

• Precious Material

  silver