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Westinghouse LM3300L - 3-Pole 300A Thermal Magnetic Breaker

Westinghouse
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The Westinghouse LM3300L is a three-pole molded case circuit breaker from the LM Series, designed to provide overcurrent protection through thermal magnetic operation. It is rated for 300A at 600V AC, with an interrupting capacity of 18kA at 480V, and features LI (Long-Time and Instantaneous) trip functions for coordinated fault response. This feed-thru connection breaker weighs 12 lb and is constructed for robust industrial service. It complies with applicable industry standards for molded case circuit breakers. Typical applications include protection of feeders and branch circuits in commercial and industrial power distribution systems.

Key Features & Specifications
  • Type: LM Series Molded Case Circuit Breaker
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Poles: 3
  • Phase: 3
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • AIC rating: 18kA@480V
  • Weight: 12 lb
  • Standards: Complies with applicable industry standards
  • Applications: Commercial and industrial power distribution


Product Identification
  • Manufacturer: Westinghouse
  • Item Subcategory: Molded Case
  • Family: LM Series
  • Type: LM