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Westinghouse LB3400 - Molded Case 400A 3-Pole Breaker

Westinghouse
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The Westinghouse LB3400 is a 3-pole molded case circuit breaker from the AB DE-ION family, designed for thermal-magnetic overcurrent protection with LI (Long-Time and Instantaneous) trip functions. It is rated for 600V AC, 400A continuous current, and an interrupting capacity of 30kA at 480V, with a bolt-on connection for secure panel mounting. Weighing 20 lb, this unit features a compact molded case construction for industrial environments. It complies with applicable UL and NEMA standards for low-voltage power distribution. Typical applications include main or feeder protection in commercial and industrial switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, AB DE-ION family, thermal-magnetic operation
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • AIC rating: 30kA@480V
  • Weight: 20 lb


  • UPC: 635909371304