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Siemens JD63M300L - Molded Case Circuit Breaker, 300A 600V 3P

Siemens
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Siemens JD63M300L 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 600V AC voltage rating and a 300A continuous current rating, housed within a robust JD frame with a feed-thru connection. The breaker utilizes a thermal-magnetic trip unit with long-time and instantaneous (LI) protection functions and is constructed to operate within a temperature range of -25°C to 70°C (-13°F to 158°F). It complies with UL and IEC standards, is RoHS compliant, and offers an interrupting capacity of 35kA at 480V AC, making it suitable for main feeder and branch circuit protection in industrial panels and switchgear.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Sentron Series
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Frame Size: JD Frame
  • Poles: 3
  • Phase: 3
  • Connection: Feed-Thru
  • AIC Rating: 35kA @ 480V AC
  • Protection Functions: LI (Long-Time and Instantaneous)
  • Trip Type: Thermal Magnetic
  • Standards: RoHS
  • Certification: UL, IEC
  • Operating Temperature: -25°C to 70°C (-13°F to 158°F)
  • Weight: 24 lb


Product Identification
  • Manufacturer Part Number: JD63M300L