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Square D MJF36800 - Molded Case Circuit Breaker 800A 600V 3P

Square D
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Square D MJF36800 is a Powerpact M-frame molded case circuit breaker designed for providing reliable overcurrent protection in demanding three-phase industrial power distribution systems. It features an 800A current rating and a 600V voltage rating, with a solid-state trip unit offering long-time and instantaneous (LI) protection functions and a 65kA interrupting capacity at 480V. The breaker's robust construction includes a bolt-on connection for busbars, measures 326.64 mm H x 210.06 mm W x 204.47 mm D, weighs 27.93 lb, and operates within a temperature range of -25 to 70 °C. It complies with key industry standards including UL, CSA, NEMA, and IEC 60947-2, making it suitable for installation in industrial control panels, switchboards, and motor control centers where high-performance circuit protection is required.

Key Features & Specifications
  • Type: Powerpact M-Frame Molded Case Circuit Breaker with Solid-State Trip Unit
  • Voltage Rating: 600V AC
  • Current Rating: 800A
  • Dimensions: 326.64 mm H x 210.06 mm W x 204.47 mm D (12.86 in x 8.27 in x 8.05 in)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution, Motor Control Centers, Switchboards
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Poles: 3
  • Connection: Bolt-On
  • Terminal Connection: Busbar Connection
  • Protection: Solid State
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: M
  • Trip Type: Solid State
  • AIC rating: 65kA @ 480V
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Wire Size: 3 x AWG 3/0...3 x 500 kcmil (Aluminium/Copper)
  • MCM Size: Min. 3/0 AWG, Max. 500 kcmil
  • Certification: UL, CSA, NOM
  • Weight: 27.93 lb


Product Identification
  • UPC: 785901466796
  • GTIN: 00785901466796