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Siemens QJ3B125A02 - 3-Pole Molded Case Breaker 125A

Siemens
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Siemens QJ3B125A02 is a 3-pole molded case circuit breaker from the QJ Series, designed for LI (Long-Time and Instantaneous) protection against overloads and short circuits. It is rated for 125A continuous current at 240V AC, with a 10kA interrupting capacity at 240V, and utilizes thermal-magnetic trip technology for reliable overcurrent response. This bolt-on breaker weighs 4 lb and features a compact, industrial-grade construction suitable for panelboard installation. It complies with applicable UL and NEMA standards for molded case circuit breakers. Typical applications include branch circuit protection in commercial and light industrial power distribution systems.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, QJ Series, Thermal Magnetic
  • Voltage Rating: 240V AC
  • Current Rating: 125A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • AIC Rating: 10kA@240V
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 4 lb
  • Protection: Thermal Magnetic
  • Circuit Breaker Mounting Style: Bolt-On
  • Frequency Rating: 50/60 Hz
  • Standards: UL, NEMA
  • Installation Type: Panelboard
  • Breaker Frame: QJ


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