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Square D MHL368001021 - Molded Case 800A 600V 3-Pole

Square D
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Square D MHL368001021 is a 3-pole molded case circuit breaker from the MHL Series, designed for high-capacity overcurrent protection with a thermal magnetic trip unit and integrated 120/240V shunt trip for remote tripping capability. This M Frame breaker delivers 800A of continuous current at 600VAC, with an interrupting rating of 65kA at 480VAC and 25kA at 600VAC, and features LI (Long-Time and Instantaneous) protection functions. The unit measures 12.86 inches in height, 8.27 inches in width, and 8.05 inches in depth, weighing 40 lb, with a feed-thru connection and load-side lugs only. It is UL and CSA certified, meeting NEMA standards for robust industrial and commercial applications. Typical applications include main or feeder protection in distribution panels, switchboards, and motor control centers requiring high fault current withstand and remote shunt trip control.

Key Features & Specifications
  • Type: MHL
  • Item Subcategory: Molded Case
  • Family: MHL Series
  • Poles: 3
  • Current Rating: 800A
  • Voltage Rating: 600VAC
  • Interrupt Rating: 65kA at 480VAC, 25kA at 600VAC
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: M Frame
  • Connection: Feed-Thru
  • Shunt Trip Voltage: 120-240 VAC
  • Mounting Type: Molded Case
  • Phase: 3
  • Dimensions: Depth 8.05 in (204.47 mm) Width 8.27 in (210.06 mm) Height 12.86 in (326.64 mm)
  • Weight: 40 lb
  • Certifications: UL, CSA


MHL368001021