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Cutler Hammer HKB3175T - Thermal Magnetic Breaker 175A 600V

Cutler Hammer
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The Cutler Hammer HKB3175T is a three-pole thermal magnetic circuit breaker designed to provide reliable overcurrent protection for industrial power distribution systems. It features a fixed 175-ampere current rating and a 600-volt AC voltage rating, utilizing a long-time and instantaneous (LI) trip function for coordinated protection against both overloads and short circuits. This unit is constructed as a solid-frame trip unit compatible with KB and HKB breaker frames and is part of the legacy Westinghouse MARK 75 family. It is engineered to meet rigorous industrial standards for safety and performance in demanding environments, making it suitable for protecting feeders and branch circuits in manufacturing facilities, data centers, and commercial buildings.

Key Features & Specifications
  • Type: Thermal Magnetic Circuit Breaker Trip Unit
  • Voltage Rating: 600V AC
  • Current Rating: 175A (Fixed)
  • Poles: 3
  • Protection: Thermal Magnetic
  • Trip Functions: LI (Long-Time and Instantaneous)
  • Compatible Frames: KB, HKB
  • Family: MARK 75
  • Weight: 2 lb