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Cutler Hammer KD3125 - 3-Pole Molded Case Breaker, 125A 600V

Cutler Hammer
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The Cutler Hammer KD3125 is a molded case circuit breaker designed to provide reliable overcurrent protection for three-phase industrial power distribution systems. It features a 125A current rating and a 600V AC voltage rating, housed within a compact K-frame design measuring 4.1" D x 5.5" H x 5.5" W and weighing 11.5 lb. This UL-listed device utilizes a thermal-magnetic trip mechanism for both long-time and instantaneous (LI) protection and offers a 35kA interrupting capacity at 480V AC. Its feed-thru connection and robust construction make it suitable for panelboards, switchboards, and motor control centers in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, KD Type, Series C, Thermal-Magnetic Protection
  • Voltage Rating: 600V AC
  • Current Rating: 125A
  • Dimensions: 4.1 in (Depth) x 5.5 in (Height) x 5.5 in (Width)
  • Standards: UL Listed
  • Applications: Industrial power distribution, panelboards, switchboards, motor control centers
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Amperage: 125A
  • AIC Rating: 35kA @ 480V AC
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous (LI)
  • Frame Size: K Frame
  • Trip Type: Thermal-Magnetic
  • Breaker Type: Molded Case
  • Mounting: Panel Mount
  • Certification: UL Listed
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Screw
  • Phase Connection: 3-Phase
  • Standards: UL 489
  • Installation Type: Fixed
  • Weight: 11.5 lb
  • Country of Origin: Dominican Republic


Product Identification
  • UPC: 786679349113
  • GTIN: 00786679349113