HE2-B3-21

Technical Characteristics

• Body Style

  multipole-single actuator type

• Bushing Length

  0.365 inches minimum and 0.385 inches maximum

• Body Length

  1.552 inches minimum and 1.572 inches maximum

• Body Width

  1.271 inches minimum and 1.291 inches maximum

• Case Material

  metal

• Center To Center Distance Between Terminals Parallel To Length

  0.865 inches minimum and 0.885 inches maximum

• Fragility Factor

  moderately rugged

• Mounting Surface To Terminal End Distance

  1.690 inches minimum and 1.710 inches maximum

• Arc Quenching Method

  magnetic blowout

• Trip Release Method

  magnetic-hydraulic

• Trip Release Characteristic

  time delay

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

  125.0

• Reset Method

  manual

• Main Contact Tripping Mechanism Type

  trip free

• Manual Actuator Type And Quantity

  1 toggle

• Actuator Position Designation

  between pole one and two

• Nominal Thread Size

  0.375 inches

• Trip Delay Time In Seconds Per Rated Continuous Current

  0.300 minimum at 150 pct and 2.000 maximum at 150 pct and 0.100 minimum at 200 pct and 0.700 maximum at 200 pct and 0.030 minimum at 300 pct and 0.200 maximum at 300 pct

• Inclosure Protection Type For Which Designed

  dustproof and explosion proof and fungus resistant and moisture resistant

• Thread Series Designator

  unef

• Center To Center Distance Between Terminals Parallel To Width

  0.615 inches minimum and 0.635 inches maximum

• Pole Quantity

  2

• Mounting Facility Type And Quantity

  thd bushing w/panel seal

• Storage Type

  general purpose warehouse

• Thread Quantity Per Inch

  32

• Maximum Continuous Load Current Rating Per Pole

  1.0 amperes dc

• Operating Voltage Type And Rating Per Pole In Volts

  50.0 dc

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

  500.0 dc

• Circuit Protection Type

  overcurrent

• Actuator Function

  trip-reset

• Internal Trip Release Configuration

  series trip

• Terminal Type And Quantity

  4 wire hook