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Siemens HHJD63B300 - Molded Case Circuit Breaker 300A 600V 3P

Siemens
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Siemens HHJD63B300 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 100kA interrupting capacity at 480V, and operates reliably across a temperature range of -25 to 70 °C. Constructed to meet rigorous industry standards, it is suitable for protecting feeders and branch circuits in panelboards and switchgear, accommodating copper conductors from 3/0 AWG to 500 KCMIL or aluminum from 4/0 AWG to 500 KCMIL.

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: 100kA at 480V
  • Phase: 3
  • Wire Size: 3/0 AWG - 500 KCMIL (Copper), 4/0 AWG - 500 KCMIL (Aluminum)
  • Operating Temperature: -25°C to 70°C (-13°F to 158°F)
  • Weight: 0.022 lb
  • Standards: Compliant with applicable industry standards for circuit protection
  • Applications: Industrial power distribution, panelboards, switchgear, and feeder/branch circuit protection


Product Identification
  • UPC: 783643008113
  • GTIN: 00783643008113