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Eaton Cutler Hammer HKDB3125 - 125A 3-Pole Molded Case Breaker

Cutler Hammer
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The Eaton Cutler Hammer HKDB3125 is a three-pole, 125A molded case circuit breaker from the Series C family, designed to provide LI (Long-Time and Instantaneous) protection via a thermal magnetic trip mechanism. This K Frame unit is rated for 600VAC and 3-phase systems, with a robust interrupting capacity of 65kA at 480VAC, and features a feed-thru connection for straightforward line and load wiring. Constructed with a compact footprint of 6.75 inches in depth, 12.25 inches in height, and 6.5 inches in width, and weighing 11 lb, it is built for durability and ease of installation in standard panelboards. The breaker is UL Listed, ensuring compliance with North American safety and performance standards for industrial power distribution. It is commonly deployed in manufacturing facilities, commercial buildings, and heavy machinery applications where reliable overcurrent protection is critical.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, LI (Long-Time and Instantaneous) Protection
  • Voltage Rating: 600VAC
  • Current Rating: 125A
  • Dimensions: 6.75 in x 12.25 in x 6.5 in (Length/Depth x Height x Width)
  • Standards: UL Listed
  • Applications: Industrial power distribution, manufacturing, commercial buildings, heavy machinery
  • Poles: 3
  • Phase: 3
  • AIC rating: 65kA@480V
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: K Frame
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Feed-Thru
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489
  • Installation Type: Panelboard
  • Item QTY: 1
  • Breaker Frame: K Frame
  • Current Rating: 125A
  • Operating Temperature Maximum Celsius: 40°C


Product Identification
  • UPC: 782113951898
  • GTIN: 00782113951898