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Square D MHL3645025DC - Molded Case Breaker 450A 600V 3-Phase

Square D
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Square D MHL3645025DC is a three-phase molded case circuit breaker from the MHL Series, designed for overcurrent protection in industrial power distribution systems. This 450A unit operates at 600VAC with a 20kA interrupting capacity at 500V, utilizing thermal magnetic protection with LI (Long-Time and Instantaneous) trip functions for precise fault response. The M Frame breaker measures 12.86 inches in height, 8.27 inches in width, and 8.05 inches in depth, weighing 40 lb, and features a feed-thru connection configuration for straightforward installation. It complies with industry standards for molded case circuit breakers, ensuring reliable performance in demanding environments. Typical applications include motor control centers, switchboards, and panelboards in manufacturing plants, commercial buildings, and utility systems requiring robust circuit protection.

Key Features & Specifications
  • Type: MHL Series Molded Case Circuit Breaker, thermal magnetic protection with LI functions
  • Voltage Rating: 600VAC
  • Current Rating: 450A
  • 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
  • Poles: 3
  • Phase: 3
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • AIC Rating: 20kA@500V
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: M Frame
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Feed-Thru
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Installation Type: Panelboard/Switchboard
  • Item QTY: 1
  • Breaker Frame: M Frame
  • Current Rating: 450A
  • Operating Temperature Maximum Celsius: 40°C


Product Identification
  • UPC: 785901893847
  • GTIN: 00785901893847