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Cutler-Hammer PB31200PRT - 1200A Trip Unit for PB/PA Frames

Cutler Hammer
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The Cutler-Hammer PB31200PRT is a three-pole, thermal-magnetic circuit breaker designed to provide reliable overcurrent and short-circuit protection for industrial power distribution systems. It is rated for 600V AC applications and features a fixed 1200A current rating with long-time and instantaneous (LI) trip functions for coordinated system protection. This unit is constructed as a solid-state trip unit for Eaton's PB and PA frame circuit breakers, weighing 33 lb, and is engineered to meet rigorous industrial standards for safety and performance in demanding environments such as manufacturing plants and large commercial facilities.

Key Features & Specifications
  • Type: Solid-state electronic trip unit for molded case circuit breakers
  • Voltage Rating: 600V AC
  • Current Rating: 1200A (Fixed)
  • Poles: 3
  • Protection: Thermal-magnetic with Long-time and Instantaneous (LI) functions
  • Trip Unit Family: TRI-PAC
  • Compatible Frames: PB, PA
  • Weight: 33 lb