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Westinghouse MDL3300 - Molded Case Circuit Breaker 300A 600V 3P

Cutler Hammer
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Westinghouse MDL3300 is a molded case circuit breaker designed for providing reliable overcurrent protection in industrial power distribution systems. It features a 300A current rating and a 600V AC voltage rating for robust electrical performance within its M Frame design. The unit is constructed as a compact, three-pole device with a feed-thru connection and utilizes a thermal-magnetic trip mechanism offering both long-time and instantaneous (LI) protection functions. It is UL Listed and provides an interrupting capacity of 50kA at 480V AC, ensuring compliance with key safety standards for safeguarding three-phase electrical circuits against faults and overloads.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Frame Size: M Frame
  • Poles: 3
  • Phase: 3-Phase
  • AIC Rating: 50kA @ 480V AC
  • Connection: Feed-Thru
  • Protection Functions: LI (Long-Time and Instantaneous)
  • Trip Type: Thermal Magnetic
  • Certification: UL Listed
  • Family: Series C
  • Country of Origin: United States


Product Identification
  • UPC: 782114585931
  • GTIN: 00782114585931