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Square D MHL36400 - Molded Case Circuit Breaker 400A 600V 3P

Square D
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Square D MHL36400 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in demanding three-phase industrial power distribution systems. It features a 400A current rating and a 600V AC voltage rating, housed within a robust M-frame construction measuring 8.27 in (210.06 mm) wide by 12.86 in (326.64 mm) high by 8.05 in (204.47 mm) deep and weighing 40 lb. The breaker is UL-certified and employs a thermal-magnetic trip unit with long-time and instantaneous functions, delivering an interrupting capacity of 65kA at 480V AC. Its feed-thru connection accommodates conductors from 3/0 AWG to 500 kcmil, making it suitable for main feeder and branch circuit protection in industrial panels and switchboards.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 8.27 in W x 12.86 in H x 8.05 in D (210.06 mm x 326.64 mm x 204.47 mm)
  • Standards: UL Certified
  • Applications: Industrial Power Distribution, Main Feeders, Branch Circuits
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • AIC Rating: 65kA @ 480V AC
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Thermal-Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: M Frame
  • Trip Type: Thermal-Magnetic
  • Wire Size: 3/0 AWG to 500 kcmil
  • Certification: UL
  • Family: MHL Series
  • Country of Origin: Mexico
  • Weight: 40 lb


Product Identification
  • UPC: 785901083726
  • GTIN: 00785901083726