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Westinghouse MD3400W - Molded Case 400A 600V 3-Pole

Westinghouse
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The Westinghouse MD3400W is a Series C molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. It operates at a voltage rating of 600V with a continuous current rating of 400A, providing thermal-magnetic protection through long-time and instantaneous (LI) trip functions. This three-pole, bolt-on breaker weighs 33 lb and features a robust molded case construction for reliable performance in demanding environments. It is rated for an interrupting capacity of 50kA at 480V, complying with industry standards for safety and durability. Typical applications include protecting feeders, motors, and branch circuits in commercial and industrial electrical panels.

Key Features & Specifications
  • Type: Molded Case
  • Voltage Rating: 600V
  • Current Rating: 400A
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 50kA@480V
  • Phase: 3
  • Functions: LI - Long-Time and Instantaneous
  • Family: Series C
  • Weight: 33 lb


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