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Siemens HJ3-B400 - Molded Case Circuit Breaker 400A 600V 3-Pole

Siemens
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Siemens HJ3-B400 is a molded case circuit breaker designed for overcurrent protection in industrial electrical systems. It is rated for 400 amperes at 600 volts AC, providing reliable fault interruption for three-phase power distribution. This 3-pole breaker features a bolt-on mounting configuration and weighs 20 lb, with an interchangeable thermal-magnetic trip unit for flexible protection settings. The unit is UL Listed and offers a high interrupting rating of 65kA at 480V, ensuring robust performance in demanding environments. Typical applications include use in panelboards, switchgear, and industrial power distribution systems requiring a 400A frame size.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Amperage: 400A
  • Voltage: 600V AC
  • Poles: 3
  • Mounting Type: Bolt-On
  • Interrupt Rating: 65kA @ 480V
  • Series/Frame: HJ Series
  • Frame Size: 400A
  • Phase: 3-Phase
  • Trip Unit: Interchangeable Thermal-Magnetic
  • Certifications: UL Listed
  • Weight: 20 lb


Part Number: HJ3-B400