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Square D Q2M3125MB - Molded Case Circuit Breaker 125A 3P 240V

Square D
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Square D Q2M3125MB is a molded case circuit breaker designed for providing reliable overcurrent protection in three-phase industrial electrical systems. It features a 125A current rating and a 240V AC voltage rating, utilizing a thermal-magnetic trip mechanism for combined long-time and instantaneous (LI) protection functions. The breaker is constructed as a three-pole, bolt-on unit with a 10kA interrupting capacity at 240V, housed within the compact and durable Q2 Series frame. It is engineered to meet relevant industry standards for safety and performance in demanding environments. Typical applications include protecting feeders and branch circuits within industrial control panels, motor control centers, and commercial power distribution equipment.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 240V AC
  • Current Rating: 125A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 10kA @ 240V
  • Protection Functions: Long-Time and Instantaneous (LI)
  • Connection: Bolt-On
  • Frame: Q2 Series
  • Item Subcategory: Molded Case
  • Weight: 4 lb