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Siemens HJXD63B400HL - Molded Case Circuit Breaker 400A 600V

Siemens
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Siemens HJXD63B400HL is a molded case circuit breaker from the Sentron Series designed for overcurrent protection in industrial and commercial electrical distribution systems. This three-phase, 400A unit operates at 600V AC with a 65kA interrupting capacity at 480V, utilizing a thermal magnetic trip mechanism with LI (Long-Time and Instantaneous) functions for reliable fault response. The breaker features a JD Frame size, a feed-thru connection, and a bolt-on mounting type, weighing 22 lb for robust installation. It complies with industry standards for molded case circuit breakers and is rated for operation at 40°C. Typical applications include main and feeder protection in switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Manufacturer: Siemens
  • Item Subcategory: Molded Case
  • Family: Sentron Series
  • Type: HJXD
  • Weight: 22 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: JD Frame
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • AIC rating: 65kA@480V
  • Phase: 3
  • Current Rating: 400A
  • Amperage: 400A
  • Voltage: 600V AC
  • Mounting Type: Bolt-On
  • Interrupt Rating: 25kA @ 600V
  • Trip Unit: Thermal Magnetic, Non-Interchangeable
  • Operating Temperature: 40°C Standard