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Westinghouse 504C740G21 - Molded Case 150A 600V 3-Phase

Westinghouse
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Westinghouse 504C740G21 Circuit Breaker - Molded Case 150A 600V 3-Phase Thermal Magnetic The Westinghouse 504C740G21 is a 3-pole molded case circuit breaker from the MARK 75 family, designed to provide overcurrent protection through its LI (Long-Time and Instantaneous) trip functions. This unit is rated for 600V AC, 150A continuous current, and delivers an interrupting capacity of 35kA at 480V, making it suitable for heavy-duty industrial power distribution. Constructed with a bolt-on connection and thermal magnetic protection mechanism, the breaker weighs 29 lb and is built for 3-phase systems. It complies with industry standards for molded case circuit breakers, ensuring reliable performance in commercial and industrial environments. Typical applications include main or feeder protection in switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic, LI (Long-Time and Instantaneous)
  • Voltage Rating: 600V AC
  • Current Rating: 150A
  • Poles: 3
  • Connection: Bolt-On
  • AIC Rating: 35kA@480V
  • Phase: 3
  • Family: MARK 75
  • Type: HLA
  • Weight: 29 lb
  • Functions: LI - Long-Time and Instantaneous
  • Protection: Thermal Magnetic
  • Item Subcategory: Molded Case
  • Manufacturer: Westinghouse


Product Identification
  • UPC: Not available
  • GTIN: Not available