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Westinghouse MA3450S - Molded Case Breaker 450A 600V

Westinghouse
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Westinghouse MA3450S is a 3-pole, 450 amp bolt-on molded case circuit breaker designed for primary overcurrent protection in electrical distribution systems. It operates at a maximum voltage rating of 600V AC with a 30,000 ampere interrupting capacity at 480V, utilizing a thermal magnetic trip unit for LI (Long-Time and Instantaneous) protection functions. The unit weighs 54 lb and features a bolt-on connection type for secure installation in panelboards and switchboards. This breaker complies with industry standards for molded case circuit breakers, ensuring reliable performance in demanding environments. It is typically applied in industrial and commercial power distribution systems requiring robust circuit protection.

Key Features & Specifications
  • Manufacturer: Westinghouse
  • Part Number: MA3450S
  • Amperage: 450 Amps
  • Voltage Rating: 600 Volts AC
  • Number of Poles: 3
  • Mounting Type: Bolt-On
  • Interrupt Rating (AIC): 30kA at 480V
  • Breaker Type: Molded Case Circuit Breaker
  • Trip Unit: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Phase: 3
  • Weight: 54 lb