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Siemens FJ63B250 - Molded Case Circuit Breaker 250A 600V 3P

Siemens
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Siemens FJ63B250 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 250A continuous current rating and a 600V AC voltage rating, with a robust thermal-magnetic trip unit offering long-time and instantaneous (LI) protection functions. The breaker is constructed as a three-pole, bolt-on unit with an interrupting capacity of 18kA at 480V AC, ensuring compliance with relevant industry standards for safety and performance. Its design is suitable for integration into panelboards and switchboards where dependable circuit protection is required for motors, feeders, and other electrical loads.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 18kA @ 480V AC
  • Protection: Thermal-Magnetic
  • Functions: LI (Long-Time and Instantaneous)
  • Connection: Bolt-On
  • Family: FJ Series
  • Item Subcategory: Molded Case
  • Weight: 12 lb