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Cutler Hammer KS320300D - 3-Pole 300A Molded Case Breaker

Cutler Hammer
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Cutler Hammer KS320300D is a three-pole molded case circuit breaker from the KS Series, designed for LI (Long-Time and Instantaneous) protection in industrial power distribution systems. It is rated for 300A at 240V AC, with a 65kA interrupting capacity at 240V, and utilizes thermal-magnetic protection for reliable overcurrent and short-circuit response. This bolt-on breaker weighs 15 lb and is built for three-phase applications, featuring a compact molded case construction for secure panel mounting. It complies with industry standards for low-voltage distribution, ensuring robust performance in demanding environments. Typical applications include main or feeder protection in commercial and industrial switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, KS Series, LI (Long-Time and Instantaneous) Functions
  • Voltage Rating: 240V AC
  • Current Rating: 300A
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 65kA@240V
  • Phase: 3
  • Weight: 15 lb
  • Standards: Complies with applicable UL and NEMA standards
  • Applications: Main or feeder protection in commercial and industrial switchboards, panelboards, and motor control centers