B438

Technical Characteristics

• Overall Height

  4.750 inches maximum

• Case Material

  metal

• Fragility Factor

  moderately rugged

• Arc Quenching Method

  magnetic blowout

• Mounting Facility Type And Quantity

  4 unthreaded hole

• Operating Voltage Type And Rating Per Pole In Volts

  120.0 ac

• Circuit Protection Type

  overcurrent

• Trip Release Method

  magnetic

• Reset Method

  automatic

• Auxiliary Switch Function And Quantity

  5 alarm

• Switch Location And Position Designation

  internal at pole one and internal at pole three

• Overall Length

  8.000 inches maximum

• Overall Width

  3.500 inches minimum and 3.750 inches maximum

• Unthreaded Mounting Hole Diameter

  0.203 inches nominal

• Switch Contact Arrangement

  single pole,single throw,normally open and single pole,single throw,normally closed

• Pole Quantity

  3

• Storage Type

  general purpose warehouse

• Maximum Continuous Load Current Rating Per Pole

  175.0 amperes ac

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

  1000.0 ac

• Trip Release Characteristic

  instantaneouss

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

  150.0

• Internal Trip Release Configuration

  series trip

• Inclosure Protection Type For Which Designed

  general purpose

• Switch Terminal Type

  threaded stud

• Special Features

  removable cover accross term1nals

• Frequency In Hertz

  400.0

• Terminal Type And Quantity

  6 threaded stud