558-128

Technical Characteristics

• Actuator Function

  trip-reset

• Center To Center Distance Between Terminals Parallel To Width

  0.625 inches nominal

• Trip Release Characteristic

  time delay all locations

• Storage Type

  general purpose warehouse

• Mounting Facility Type And Quantity

  1 threaded bushing w/panel seal

• Reset Method

  manual

• Pole Quantity

  2

• Circuit Protection Type

  overcurrent all locations

• Fragility Factor

  moderately rugged

• Bushing Length

  0.275 inches nominal

• Mounting Surface To Terminal End Distance

  1.770 inches nominal

• Arc Quenching Method

  magnetic blowout

• Unpackaged Unit Weight

  4.200 ounces

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

  115.0 all locations

• Main Contact Tripping Mechanism Type

  trip free

• Actuator Position Designation

  between pole one and two

• Trip Delay Time In Seconds Per Rated Continuous Current

  0.200 minimum at 200 pct all locations and 1.700 maximum at 200 pct all locations

• Frequency In Hertz

  60.0 all locations

• Manual Actuator Type And Quantity

  1 toggle

• Case Material

  metal

• Body Style

  multipole-single actuator type

• Center To Center Distance Between Terminals Parallel To Length

  0.875 inches nominal

• Inclosure Protection Type For Which Designed

  hermetically sealed

• Trip Release Method

  magnetic all locations

• Thread Quantity Per Inch

  32

• Nominal Thread Size

  0.375 inches

• Terminal Type And Quantity

  4 tab w/screw

• Internal Trip Release Configuration

  series trip all locations

• Body Width

  1.250 inches nominal

• Body Length

  1.500 inches nominal

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

  300.0 ac all locations

• Maximum Continuous Load Current Rating Per Pole

  2.0 amperes ac all locations

• Thread Series Designator

  unef

• Operating Voltage Type And Rating Per Pole In Volts

  250.0 ac all locations