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Siemens QJ3B125HA01 - Molded Case Circuit Breaker 125A 240V 3-Pole

Siemens
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Siemens QJ3B125HA01 is a 3-pole molded case circuit breaker designed for overcurrent protection in commercial and industrial electrical systems. It delivers a 125A continuous current rating at 240V with a 42kA interrupting capacity, utilizing a thermal magnetic trip mechanism for LI (long-time and instantaneous) protection functions. The unit features a bolt-on connection style, weighs 4 lb, and is constructed within the QJH Series frame for three-phase applications. This breaker complies with industry standards for reliable performance in panelboards and switchgear. Typical applications include protecting branch circuits and feeders in demanding electrical environments.

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
  • 125A continuous current rating
  • 240V maximum voltage
  • 3 poles
  • Bolt-on mounting
  • 42kA interrupt rating at 240V
  • Thermal magnetic trip unit
  • QJ series frame
  • Designed for commercial and industrial use