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Square D MA263001021 - Molded Case Circuit Breaker 300A 600V

Square D
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Square D MA263001021 is a 2-pole molded case circuit breaker from the I-Line family, designed for thermal magnetic protection with LI (Long-Time and Instantaneous) functions. It is rated for 600V AC, 300A, with a 30kA interrupting capacity at 480V, and operates on a single-phase system. The breaker features an I-Line style plug-in connection, an M Frame size, and weighs 38 lb, complete with a 120V shunt trip for remote tripping capability. It complies with industry standards for molded case breakers, ensuring reliable overcurrent protection in industrial power distribution panels. Typical applications include branch circuit protection in commercial and industrial electrical systems where high amperage and shunt trip functionality are required.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic, I-Line Plug-In
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Poles: 2
  • Phase: 1
  • AIC Rating: 30kA@480V
  • Frame Size: M Frame
  • Functions: LI - Long-Time and Instantaneous
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • Additional Info: Complete with 120V shunt trip
  • Weight: 38 lb