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Square D MA265001021 - Molded Case 500A 600V (2-Pole I-Line)

Square D
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Square D MA265001021 is a 2-pole, 500A molded case circuit breaker from the I-Line family, designed for overcurrent protection in commercial and industrial power distribution systems. It delivers long-time and instantaneous (LI) protection via a thermal magnetic trip unit, rated for 600VAC with a 30kA interrupting capacity at 480V. The unit weighs 38 lb and features an M Frame construction with an I-Line style plug-in connection for secure panel mounting. It complies with UL standards for molded case circuit breakers and includes a 120V shunt trip for remote tripping capability. This breaker is suited for main or feeder protection in switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case
  • Family: I-Line
  • Type: MA
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: M Frame
  • Voltage Rating: 600V
  • Poles: 2
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • AIC rating: 30kA@480V
  • Phase: 1
  • Current Rating: 500A
  • Additional Info: complete with 120V shunt trip
  • Weight: 38 lb
  • 3 pole configuration
  • UL listed


MA265001021