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Eaton Cutler Hammer HFB3040 - 40A 3-Pole Molded Case Circuit Breaker

Cutler Hammer
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Eaton Cutler Hammer HFB3040 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase industrial power distribution systems. It features a 40A continuous current rating and a 600V AC voltage rating, with a robust thermal-magnetic trip unit providing long-time and instantaneous (LI) protection functions. The breaker is constructed with a three-pole bolt-on connection within the compact MARK 75 frame, offering an interrupting capacity of 25kA at 480V AC. It is engineered to meet relevant industry standards for safety and performance in demanding environments, making it suitable for use in panelboards, switchboards, and industrial control panels.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection
  • Voltage Rating: 600V AC
  • Current Rating: 40A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • AIC Rating: 25kA @ 480V AC
  • Trip Functions: LI (Long-Time and Instantaneous)
  • Frame: MARK 75
  • Weight: 11 lb
  • Protection Type: Thermal Magnetic