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Square D MHL36300 - Molded Case Circuit Breaker 300A 3P 600V

Square D
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Square D MHL36300 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 300A current rating and a 600V voltage rating, housed within a robust M-frame construction measuring 8.27 in (210.06 mm) wide by 8.05 in (204.47 mm) deep by 12.86 in (326.64 mm) high and weighing 40 lb. The breaker complies with industry standards for thermal-magnetic protection, utilizing a long-time and instantaneous (LI) trip function to safeguard circuits. Its feed-thru connection and ability to handle wire sizes from 3/0 AWG to 500 Kcmil make it suitable for main feeder and branch circuit applications in commercial and industrial panels.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, MHL Series
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Dimensions: 8.27 in W x 8.05 in D x 12.86 in H (210.06 mm x 204.47 mm x 326.64 mm)
  • Weight: 40 lb
  • Standards: Designed to meet applicable industry standards for circuit protection
  • Applications: Main feeder and branch circuit protection in industrial and commercial power distribution
  • Phase: 3
  • Poles: 3
  • AIC Rating: 65kA at 480V AC
  • Connection: Feed-Thru
  • Wire Size: 3/0 AWG to 500 Kcmil
  • Frame Size: M Frame
  • Trip Type / Functions: LI (Long-Time and Instantaneous)
  • Protection: Thermal Magnetic


Product Identification
  • UPC: 785901083719