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Square D MJA36450 - Molded Case Circuit Breaker 450A 600V 3P

Square D
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Square D MJA36450 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 450A current rating and a 600V AC voltage rating, housed within a robust 800A/M frame with dimensions of 326.64 mm H x 210.06 mm W x 204.47 mm D and a weight of 29 lb. This solid-state protection device complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards and is engineered for panel-mount installation in I-Line panelboards for three-phase ABC connections, operating effectively in temperatures from -25 to 70 °C.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Standard Type, Solid-State Protection with Long-Time and Instantaneous (LI) Trip Functions
  • Voltage Rating: 600V AC
  • Current Rating: 450A
  • Frame Size: 800A/M
  • AIC Rating: 65kA @ 480V
  • Poles: 3
  • Phase Connection: ABC
  • Connection: Panel Mount
  • Terminal Connection: Box Lug
  • Wire Size: 3 x AWG 3/0 to 3 x 500 kcmil (aluminium/copper)
  • MCM Size: Min. 3/0 AWG, Max. 500 MCM
  • 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)
  • Weight: 29 lb
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Certification: UL, CSA, NOM
  • Panel Type: I-Line Panelboards
  • Protection: Solid State
  • Functions: LI (Long-Time and Instantaneous)
  • Breaker Type: Standard
  • Family: Powerpact
  • Country of Origin: United States


Product Identification
  • UPC: 785901862000
  • GTIN: 00785901689614