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Siemens QJ3M125H - 125A 3-Pole Thermal Magnetic Breaker

Siemens
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Siemens QJ3M125H Circuit Breaker - 125A 3-Pole Thermal Magnetic The Siemens QJ3M125H is a 3-pole molded case circuit breaker from the QJH Series, designed for overcurrent protection in electrical distribution systems using a thermal magnetic trip mechanism with LI (Long-Time and Instantaneous) functions. It is rated for 125 amps at 240 volts with a high interrupting capacity of 42kA at 240V, supporting three-phase applications through a bolt-on mounting connection. Weighing 4 lb, this compact unit features a robust molded case construction for secure installation in panelboards and switchboards. The breaker complies with industry standards for performance and safety, making it suitable for commercial and light industrial power distribution systems requiring reliable fault current interruption.

Key Features & Specifications
  • Manufacturer: Siemens
  • Item Subcategory: Molded Case
  • Family: QJH Series
  • Type: QJH
  • Weight: 4 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 240V
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 42kA@240V
  • Phase: 3
  • Current Rating: 125A
  • Amperage: 125A
  • Mounting Type: Bolt-On
  • Interrupt Rating: 42kA @ 240V
  • Series/Frame: QJ