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Square D KCF34125 - Molded Case Circuit Breaker 125A 480V 3P

Square D
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Square D KCF34125 is a molded case circuit breaker designed for providing reliable overcurrent protection in three-phase industrial power distribution systems. It features a 125A continuous current rating and a 480V AC voltage rating, with a robust thermal-magnetic trip unit offering both long-time and instantaneous (LI) protection functions. The breaker is constructed with a durable K-frame design, utilizes a three-pole bolt-on connection, and has an interrupting capacity of 65kA at 480V AC to handle high fault currents. It complies with relevant industry standards for safety and performance in electrical protection. Typical applications include use as a main or branch circuit protector in panelboards, switchboards, and industrial control panels.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, K-Frame
  • Voltage Rating: 480V AC
  • Current Rating: 125A
  • Poles: 3
  • Connection: Bolt-On
  • AIC Rating: 65kA @ 480V AC
  • Phase: 3
  • Frame Size: K Frame
  • Trip Functions: LI (Long-Time and Instantaneous)
  • Weight: 11 lb
  • Standards: Designed to meet applicable industry standards for circuit protection.
  • Applications: Industrial power distribution, panelboards, switchboards, and motor control centers.
  • Note: This unit does not include lugs; they must be sourced separately based on wiring specifications.