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Square D MH36800CBA - Thermal Magnetic 800A 3-Pole Breaker

Square D
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Square D MH36800CBA is a 3-pole, 800A thermal magnetic molded case circuit breaker from the I-Line family, designed to provide long-time and instantaneous (LI) overcurrent protection for commercial and industrial power distribution systems. It is rated for 600VAC and delivers a 65kA interrupting capacity at 480V, ensuring robust fault clearance in high-fault environments. The unit features an M Frame construction with I-Line style plug-in connection, measuring 12.86 inches in height, 8.27 inches in width, and 8.05 inches in depth, with a weight of 40 lb. This breaker complies with industry standards for thermal magnetic protection, offering reliable performance in 3-phase applications. Typical applications include use in Square D I-Line busway systems for main or feeder circuit protection in manufacturing plants, data centers, and large commercial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Manufacturer: Square D
  • Family: I-Line
  • Model/Series: MH
  • Frame Size: M Frame
  • Poles: 3
  • Current Rating: 800A
  • Voltage Rating: 600VAC
  • Interrupting Rating: 65kA at 480V
  • Protection Type: Thermal Magnetic
  • Trip Functions: Long-Time and Instantaneous (LI)
  • Connection Type: I-Line Style Plug-In
  • Phase: 3
  • Dimensions: Height 12.86 in (326.64 mm), Width 8.27 in (210.06 mm), Depth 8.05 in (204.47 mm)
  • Weight: 40 lb


Part Number: MH36800CBA