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Siemens JL3B250 - Molded Case Circuit Breaker 250A 600V

Siemens
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Siemens JL3B250 is a 3-pole thermal magnetic molded case circuit breaker designed for overcurrent protection in industrial and commercial electrical distribution systems. It is rated for 250A at 600VAC and provides LI (Long-Time and Instantaneous) trip functions, with a 35kA interrupting capacity at 480VAC. The unit features a bolt-on connection, weighs 24 lb, and is built on a JL frame suitable for 200–400A applications. It operates at 50/60 Hz and is UL Listed for safety and performance standards. This breaker is typically used in panelboards and switchboards for reliable branch circuit and feeder protection.

Key Features & Specifications
  • Type: JL
  • Poles: 3
  • Current Rating: 250 Amps
  • Voltage Rating: 600 VAC
  • Functions: LI - Long-Time and Instantaneous
  • Protection: Thermal Magnetic
  • Connection: Bolt-On
  • Interrupting Rating: 35 kA at 480 VAC
  • Interrupting Rating: 25 kA at 600 VAC
  • Frequency: 50/60 Hz
  • Weight: 24 lb
  • Certification: UL Listed