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Square D MJL36450 - Molded Case Circuit Breaker 450A 600V

Square D
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Square D MJL36450 is a molded case circuit breaker designed for providing robust overcurrent protection in industrial power distribution systems. It features a 450A current rating and a 600V voltage rating, housed within a durable 800A/M frame measuring 326.64 mm H x 210.06 mm W x 204.47 mm D and weighing 29 lb. This breaker complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards and is typically applied in equipment gear panels for three-phase ABC connections, offering a 65kA interrupting capacity at 480V. Its solid-state protection includes long-time and instantaneous trip functions, with box lug terminals accepting wire sizes from 3/0 AWG to 500 kcmil for aluminum or copper conductors, and it operates reliably in temperatures from -25°C to 70°C.

Key Features & Specifications
  • Type: Standard molded case circuit breaker with solid-state protection and long-time/instantaneous trip functions
  • Voltage Rating: 600V AC
  • Current Rating: 450A
  • Dimensions: 326.64 mm (H) x 210.06 mm (W) x 204.47 mm (D)
  • Weight: 29 lb
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial power distribution in equipment gear panels
  • Switch Type: Circuit Breaker
  • Configuration: Lug In/Lug Out
  • Temp Rating: -25°C to 70°C
  • Phase: 3
  • AIC Rating: 65kA @ 480V
  • Connection: Box Lug
  • Poles: 3
  • Protection: Solid State
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: 800A/M
  • Breaker Type: Standard
  • MCM Size: Min. 3/0 AWG, Max. 500 MCM
  • Wire Size: 3 x AWG 3/0...3 x 500 kcmil aluminium/copper
  • Certification: UL, CSA, NOM
  • Phase Connection: ABC
  • Panel Type: Equipment Gear


Product Identification
  • UPC: 785901655398
  • GTIN: 00785901879954