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Siemens JJ63B350 - Molded Case Circuit Breaker 350A 600V

Siemens
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Siemens JJ63B350 is a three-pole molded case circuit breaker from the JJ Frame family, designed for overcurrent protection in industrial and commercial power distribution systems. It provides LI (Long-Time and Instantaneous) protection functions through a thermal magnetic trip mechanism, rated for 350A at 600V AC with a 25kA interrupting capacity at 480V. The unit weighs 22 lb and features a bolt-on connection for secure panel mounting. This breaker meets industry standards for safety and performance in three-phase applications.

Key Features & Specifications
  • Manufacturer: Siemens
  • Model: JJ63B350
  • Type: JJ
  • Item Subcategory: Molded Case
  • Family: JJ Frame
  • Functions: LI - Long-Time and Instantaneous
  • Protection: Thermal Magnetic
  • Current Rating: 350A
  • Voltage Rating: 600V
  • Poles: 3
  • Phase: 3
  • AIC Rating: 25kA at 480V
  • Connection: Bolt-On
  • Weight: 22 lb


Part Number: JJ63B350