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Siemens JD63B300HL - Molded Case Circuit Breaker, 300A 600V 3P

Siemens
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Siemens JD63B300HL 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 voltage rating, housed within a robust JD frame with a feed-thru connection. The breaker utilizes a thermal-magnetic trip unit for long-time and instantaneous (LI) protection functions, is rated for 35kA interrupting capacity at 480V, and operates within a temperature range of -25°C to 70°C (-13°F to 158°F). Constructed to comply with UL, IEC, and RoHS standards, this 27 lb device is engineered for integration into panelboards and switchboards for main feeder and branch circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, JD Frame
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 35kA @ 480V
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • Functions: LI (Long-Time and Instantaneous)
  • Frame Size: JD Frame
  • Trip Type: Fixed
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Standards: RoHS Compliant
  • Certification: UL, IEC
  • Weight: 27 lb