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Square D KAB26125AC - Circuit Breaker 125A 600V 2-Pole

United Fuses
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Square D KAB26125AC is a thermal-magnetic molded case circuit breaker designed for overcurrent protection in industrial and commercial electrical systems. This 2-pole unit is rated for 125 amperes at 600 volts AC, housed in a 250-ampere frame with an I-Line bolt-on connection for secure panel mounting. The breaker weighs 5.19 lb and features a thermal-magnetic trip mechanism that provides inverse time overload protection and instantaneous short circuit response, accommodating wire sizes from 1 to 350 kcmil with an included AL250KA lug kit. It offers interrupting ratings of 22kA at 600Vac, 25kA at 480Vac, and 42kA at 240Vac and 120Vac, meeting industry standards for robust fault current handling. Typical applications include branch circuit protection in distribution panels, motor control centers, and switchboards within manufacturing plants and commercial facilities.

Key Features & Specifications
  • Type: Thermal-Magnetic Molded Case Circuit Breaker
  • Amperage: 125A
  • Voltage: 600 Vac
  • Poles: 2
  • Frame Size: 250A
  • Connection Type: I-Line Bolt-on
  • Protection Type: Thermal-Magnetic
  • Interrupt Rating: 22kA at 600Vac, 25kA at 480Vac, 42kA at 240Vac, 42kA at 120Vac
  • Wire Range: 1-#6 to 350 kcmil
  • Family: KA Series
  • Weight: 5.19 lb