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K3B125

Siemens
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Siemens K3B125 is a 3-pole molded case circuit breaker from the K Frame family, designed for low voltage power distribution protection with LI (Long-Time and Instantaneous) trip functions. It is rated for 125A continuous current at 600V AC, employing a thermal-magnetic trip unit for dependable overload and short circuit protection. The unit features a bolt-on mounting connection for secure installation and weighs 15 lb. It is UL listed for use in industrial and commercial electrical applications, with an interrupting capacity ranging from 14 kA to 25 kA depending on the specific frame and series.

Key Features & Specifications
  • Type: K3B
  • Item Subcategory: Molded Case
  • Family: K Frame
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600V AC
  • Current Rating: 125 A
  • Poles: 3
  • Phase: 3
  • Protection: Thermal Magnetic
  • Connection: Bolt-On
  • Weight: 15 lb
  • Interrupt Rating: 14-25 kA
  • Certifications: UL Listed


Siemens K3B125 - Molded Case Circuit Breaker 125A 600V