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Cutler Hammer HMD3700T - Electronic Trip Unit 700A 600V

Cutler Hammer
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The Cutler Hammer HMD3700T is a Series C HMD-type electronic trip unit designed to provide reliable circuit protection for industrial power distribution systems. It features a 600V AC voltage rating and a fixed 700A current rating, housed within a compact 3 lb unit designed for integration into compatible MD and MDY frame circuit breakers. This trip unit complies with relevant industry standards for electrical protection devices and utilizes a thermal-magnetic protection mechanism with Long-time and Instantaneous (LI) trip functions to safeguard against overloads and short circuits. It is engineered for three-pole applications in commercial and industrial facilities requiring consistent protection for feeder and branch circuits.

Key Features & Specifications
  • Type: Electronic Trip Unit, HMD Type, Series C Family
  • Voltage Rating: 600V AC
  • Current Rating: 700A (Fixed)
  • Weight: 3 lb
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI (Long-time and Instantaneous)
  • Compatible Frames: MD, MDY
  • Item Subcategory: Trip Units & Programmers


Product Identification
  • Manufacturer Part Number: HMD3700T