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MA365001121

Square D
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Save $-3,612.09
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Square D MA365001121 is a 500A, 3-pole, M-frame thermal magnetic molded case circuit breaker designed for overload and short circuit protection in commercial and industrial power distribution systems. It is rated for 600VAC and 250VDC operation, with a 30kA interrupting capacity at 480VAC, and features LI (Long-Time and Instantaneous) trip functions for coordinated protection. Weighing 38 lb, this unit utilizes an I-Line style plug-in connection and a feed-thru mounting design for panel mount applications. The breaker complies with industry standards for molded case circuit breakers, ensuring reliable performance in demanding environments. Typical applications include branch circuit protection in switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Thermal Magnetic Molded Case Circuit Breaker
  • Manufacturer: Square D
  • Part Number: MA365001121
  • Amperage: 500A
  • Voltage: 600 Vac, 250 Vdc
  • Poles: 3
  • Phase: 3
  • Frame Size: M Frame
  • Family: I-Line
  • Type: MA
  • Functions: LI - Long-Time and Instantaneous
  • Connection: I-Line Style Plug-In
  • Mounting Type: Feed-thru, Panel Mount
  • Interrupt Rating: 30kA @ 480V
  • Weight: 38 lb
  • Application: Commercial, Industrial


Square D MA365001121 - Circuit Breaker 500A 3-Pole