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Square D MGA36400 - Molded Case Circuit Breaker 400A 600V 3-Pole

Square D
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Square D MGA36400 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 400A current rating and a 600V voltage rating, housed within a compact M-frame design measuring 326.64 mm H x 210.06 mm W x 204.47 mm D and weighing 29 lb. This solid-state protection device complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards, making it suitable for three-phase applications in manufacturing plants, data centers, and commercial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Protection, I-Line Style Plug-In Connection
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • 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, panelboards, switchboards
  • Switch Type: Circuit Breaker
  • Configuration: 3-Pole
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Phase: 3
  • AIC Rating: 35kA @ 480V
  • Connection: I-Line, Lug
  • Poles: 3
  • Protection: Solid State
  • Functions: LI (Long-Time and Instantaneous)
  • Frame Size: M
  • Wire Size: 3 x AWG 3/0 to 3 x 500 kcmil (Aluminium/Copper)
  • Certification: UL, CSA, NOM
  • MCM Size: Min. 3/0 AWG, Max. 500 kcmil
  • Mounting: Plug-In
  • Hz: 50/60 Hz
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Compatible Frames: Powerpact M-Frame
  • Installation Type: Panelboard/Switchboard
  • Breaker Frame: M
  • Operating Temperature Maximum Celsius: 70 °C


Product Identification
  • UPC: 785901496144
  • GTIN: 00785901496144