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Cutler Hammer HKD3300W - 300A Molded Case Circuit Breaker

Cutler Hammer
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The Cutler Hammer HKD3300W is a molded case circuit breaker designed to provide reliable overcurrent protection for three-phase industrial power distribution systems. It features a 300A current rating and a 600V voltage rating, housed within a compact, bolt-on K-frame construction measuring 4.1" x 5.5" x 5.5" (LxHxW) and weighing 11.5 lb. This thermal-magnetic breaker is UL Listed and offers a 65kA interrupting capacity at 480V, with long-time and instantaneous trip functions for coordinated protection across an operating temperature range of -25°C to 70°C (-13°F to 158°F). It is engineered for demanding applications in industrial control panels, switchgear, and motor control centers where robust, code-compliant circuit protection is required.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Dimensions: 4.1 in (Depth) x 5.5 in (Height) x 5.5 in (Width)
  • Standards: UL Listed
  • Applications: Industrial Power Distribution, Motor Control Centers, Switchgear
  • Phase: 3
  • AIC Rating: 65kA @ 480V AC
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal-Magnetic
  • Functions: Long Time, Instantaneous
  • Frame Size: K Frame
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Weight: 11.5 lb
  • Family: Series C
  • Country of Origin: Dominican Republic


Product Identification
  • UPC: 786679342909
  • GTIN: 00786679342909