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Westinghouse MA3300 - Molded Case Circuit Breaker 300A 3P (30kA AIC)

Westinghouse
Price
Save $-2,495.98
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Westinghouse MA3300 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 300A current rating and a 600V voltage rating, housed within a robust thermal-magnetic trip unit that offers both long-time delay and instantaneous (LI) protection functions. The breaker is constructed as a three-pole, bolt-on unit with a 30kA interrupting capacity at 480V AC and a weight of 54 lb, ensuring durable performance in demanding environments. It is engineered to meet relevant industry standards for circuit protection devices. Typical applications include industrial power distribution, panelboards, and switchgear where robust protection is required.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, MA Series, Thermal-Magnetic Protection
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Phase: 3
  • Poles: 3
  • Connection: Bolt-On
  • AIC Rating: 30kA @ 480V AC
  • Protection Functions: LI (Long-Time and Instantaneous)
  • Weight: 54 lb
  • Family: MA Series