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Square D MHL36900 - Molded Case 900A 600V 3-Pole

Square D
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Square D MHL36900 is a 3-pole molded case circuit breaker designed for thermal magnetic overcurrent protection in industrial power distribution systems. It is rated for 900A at 600VAC, with a 65kA interrupting capacity at 480V, and features long time and instantaneous trip functions for coordinated fault response. The M Frame breaker measures 12.86 inches high, 8.27 inches wide, and 8.05 inches deep, weighing 40 lb, with feed-thru connections and wire size compatibility from 3/0 AWG to 500 kCMIL. It complies with applicable UL and NEMA standards for industrial switchgear and panelboard installations. Typical applications include main or feeder protection in manufacturing plants, data centers, and large commercial facilities requiring high-current, three-phase power management.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic
  • Voltage Rating: 600V
  • Current Rating: 900A
  • Dimensions: Height 12.86 in (326.64 mm), Width 8.27 in (210.06 mm), Depth 8.05 in (204.47 mm)
  • Standards: UL, NEMA
  • Applications: Industrial power distribution, main feeder protection
  • Poles: 3
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: M Frame
  • Phase: 3
  • AIC rating: 65kA@480V
  • Wire Size: 3/0 AWG–500 kCMIL
  • Weight: 40 lb


Product Identification
  • UPC: 785901360520