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Q12125-R MAIN - Main Breaker 125A 120/240V (Plug-on)

United Fuses
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The Q12125-R MAIN is a main circuit breaker designed for primary overcurrent protection in electrical distribution systems. It is rated for 120/240 volts AC and carries a current rating of 125 amps, providing robust protection for branch circuits. The unit weighs 5.19 lb and features a compact, plug-on mounting style for installation in compatible load centers. This breaker complies with UL 489 standards for safety and performance, making it suitable for residential and light commercial applications.

Key Features & Specifications
  • Type: Main circuit breaker, thermal-magnetic trip, plug-on mounting
  • Voltage Rating: 120/240 V AC
  • Current Rating: 125 A
  • Weight: 5.19 lb
  • Standards: UL 489
  • Applications: Residential and light commercial main breaker panels
  • Breaker Type: Main
  • Poles: 2
  • Phase: 1
  • Trip Type: Thermal-magnetic
  • Frame Size: 125 A
  • Circuit Breaker Mounting Style: Plug-on
  • Terminal Connection: Line and load lugs
  • Frequency Rating: 60 Hz
  • Installation Type: Plug-on


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