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Westinghouse LM3900L - Molded Case 900A 600V 3-Pole

Westinghouse
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Westinghouse LM3900L is a 3-pole molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. It is rated for 600V AC, 900A continuous current, and provides an interrupting capacity of 18kA at 480V AC. This thermal-magnetic breaker features a feed-thru connection, LI (Long-Time and Instantaneous) trip functions, and weighs 12 lb, constructed for robust panelboard or switchboard installation. It complies with industry standards for molded case circuit breakers, suitable for protecting feeders and large branch circuits in manufacturing plants, commercial buildings, and heavy machinery applications.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic
  • Voltage Rating: 600V AC
  • Current Rating: 900A
  • Poles: 3
  • Phase: 3
  • Connection: Feed-Thru
  • Protection: LI - Long-Time and Instantaneous
  • AIC rating: 18kA@480V
  • Weight: 12 lb
  • Family: LM Series
  • Functions: LI - Long-Time and Instantaneous
  • Standards: Industry standard molded case breaker compliance
  • Applications: Industrial power distribution, feeder protection, large branch circuits


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