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Westinghouse MDL3350 - Molded Case 350A 600V 3-Pole

Cutler Hammer
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Westinghouse MDL3350 is a three-pole molded case circuit breaker from the Series C family, designed to provide LI (Long Time and Instantaneous Trip) protection for electrical systems. This thermal magnetic breaker is rated for 350A at 600VAC, with a 50kA interrupting capacity at 480VAC, and operates in three-phase configurations. The unit features a compact M Frame design with feed-thru connections, measuring 4.06 inches in depth, 8.25 inches in height, and 8.25 inches in width, with a weight of 0.01 lb. It is UL Listed and certified for use in ambient temperatures ranging from -13°F to 158°F (-25°C to 70°C). This breaker is suitable for industrial applications requiring reliable overcurrent and short-circuit protection in distribution panels and switchboards.

Key Features & Specifications
  • Type: Molded Case
  • Voltage Rating: 600V
  • Current Rating: 350A
  • Dimensions: 4.06 in x 8.25 in x 8.25 in (Length/Depth x Height x Width)
  • Standards: UL Listed
  • Applications: Industrial distribution panels and switchboards
  • Poles: 3
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • Functions: LI - Long Time and Instantaneous Trip
  • Frame Size: M Frame
  • AIC rating: 50kA@480V
  • Phase: 3
  • Temp Rating: -13–158 °F (-25–70 °C)
  • Family: Series C
  • Country of Origin: United States


Product Identification
  • UPC: 782114585948
  • GTIN: 00782114585948