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Square D MP40H1 - Insulated Case Circuit Breaker 4000A 600V

Square D
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Square D MP40H1 is a high-capacity insulated case circuit breaker from the Masterpact family, engineered for primary protection in demanding power distribution systems. This 3-pole, 3-phase unit delivers a 4000A current rating at 600V, with a solid-state LSIG trip unit providing comprehensive long-time, short-time, instantaneous, and ground-fault protection, and an interrupting capacity of 100kA at 480V. The breaker features bolt-on mounting and weighs 108 lb, with support for control voltages including 120VAC and 48VDC shunt trip options for advanced system integration. It complies with industry standards for reliable fault clearing in industrial environments. Typical applications include main switchboards, large motor control centers, and critical power distribution networks in manufacturing and utility facilities.

Key Features & Specifications
  • Type: Insulated Case
  • Family: Masterpact
  • Amperage: 4000A
  • Poles: 3
  • Phase: 3
  • Voltage Rating: 600V
  • Interrupt Rating: 100kA at 480V
  • Protection: Solid State
  • Trip Unit: LSIG
  • Mounting Type: Bolt-on
  • Weight: 108 lb
  • Control Voltages: 120VAC, 48VDC shunt trip