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Siemens NJX3B400 - Molded Case Circuit Breaker 400A 600V 3P

Siemens
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Siemens NJX3B400 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase industrial power distribution systems. It features a 400A continuous current rating and a 600V AC voltage rating, housed within a robust JG frame with a compact, bolt-on connection design for secure panel mounting. This thermal magnetic breaker complies with relevant industry standards for electrical safety and performance, utilizing a Long-Time and Instantaneous (LI) trip function for coordinated protection. Its 35kA interrupting rating at 480V AC makes it suitable for safeguarding feeders and mains in commercial and industrial facilities, including manufacturing plants and data centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, LI (Long-Time and Instantaneous) Trip Function
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Frame Size: JG Frame
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • AIC Rating: 35kA @ 480V AC
  • Protection: Thermal Magnetic
  • Family: VL Series
  • Weight: 45 lb
  • Standards: Complies with applicable industry electrical standards
  • Applications: Industrial power distribution, feeder and main circuit protection, panelboards, switchboards
  • Note: Lugs are not included; consult manufacturer for lug part numbers based on wiring specifications.


Product Identification
  • UPC: 078364360818
  • GTIN: 00783643608184