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Square D MHL3645031DC - Molded Case Circuit Breaker 450A 600V

Square D
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Square D MHL3645031DC is a molded case circuit breaker designed for providing reliable overcurrent protection in demanding three-phase industrial power distribution systems. It features a 600V AC voltage rating and a 450A current rating, housed within a robust M-frame construction measuring 204.47 mm in depth, 210.06 mm in width, and 326.64 mm in height with a weight of 40 lb. The breaker utilizes a thermal-magnetic trip unit with long-time and instantaneous (LI) protection functions and complies with relevant industry standards for safety and performance. Its feed-thru connection and 20kA interrupting capacity at 500V DC make it suitable for protecting feeders, mains, and other critical circuits in industrial control panels and switchgear.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, MHL Series, Thermal-Magnetic Protection
  • Voltage Rating: 600V AC
  • Current Rating: 450A
  • Dimensions: 204.47 mm D x 210.06 mm W x 326.64 mm H (8.05 in x 8.27 in x 12.86 in)
  • Weight: 40 lb
  • Standards: Industry Standard
  • Applications: Industrial Power Distribution, Feeder and Main Protection
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Amperage: 450A
  • AIC Rating: 20kA @ 500VDC
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous (LI)
  • Frame Size: M Frame
  • Trip Type: Thermal-Magnetic


Product Identification
  • Manufacturer Part Number: MHL3645031DC