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Square D MGL36400 - Molded Case Circuit Breaker 400A 600V 3P

Square D
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Square D MGL36400 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase industrial power distribution systems. It features a solid-state trip unit with long-time and instantaneous (LI) protection functions, rated for 400A at 600V with an interrupting capacity of 35kA at 480V. The breaker is constructed within an 800A/M frame with a compact footprint of 326.64 mm H x 210.06 mm W x 204.47 mm D and a weight of 28.7 lb, utilizing box lug terminals for lug-in/lug-out connections compatible with wire sizes from 3/0 AWG to 500 kcmil. It complies with UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards and is rated for operation in temperatures from -25°C to 70°C. This breaker is typically applied in equipment gear panels for industrial facilities, manufacturing plants, and commercial buildings requiring robust circuit protection.

Key Features & Specifications
  • Type: Standard molded case circuit breaker with solid-state protection
  • 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)
  • Weight: 28.7 lb
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial power distribution, equipment gear panels
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Poles: 3
  • Connection: Lug In/Lug Out
  • 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
  • AIC rating: 35kA @ 480V
  • Protection: Solid State
  • Functions: LI (Long-Time and Instantaneous)
  • Frame Size: 800A/M
  • Breaker Type: Standard
  • Panel Type: Equipment Gear
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase Connection: ABC
  • Certification: UL, CSA, NOM
  • Family: Powerpact
  • Item Subcategory: Molded Case
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901507659
  • GTIN: 00785901507659