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Siemens HJD63B300 - Molded Case Circuit Breaker 300A 3P (65kA AIC)

Siemens
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Siemens HJD63B300 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 300A current rating and a 600V AC voltage rating, housed within a compact JD frame with a bolt-on connection for secure installation. This thermal magnetic breaker offers both long-time and instantaneous trip functions, is rated for 65kA interrupting capacity at 480V, and operates across a temperature range of -25 to 70 °C. Constructed to accept copper wire sizes from AWG 3/0 to 500 KCMIL or aluminum from AWG 4/0 to 500 KCMIL, it complies with industry standards for robust performance in commercial and industrial panelboards and switchgear.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection with Long Time and Instantaneous Trip Functions
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Frame Size: JD Frame
  • Poles: 3
  • Connection: Bolt-On
  • AIC Rating: 65kA @ 480V AC
  • Phase: 3
  • Wire Size: AWG 3/0 to 500 KCMIL (Copper), AWG 4/0 to 500 KCMIL (Aluminum)
  • Operating Temperature: -25 to 70 °C (-13 to 158 °F)
  • Weight: 0.022 lb
  • Family: Sentron Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 783643213395
  • GTIN: 00783643213395