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Siemens FD63B125L - Molded Case Circuit Breaker (125A, 600V)

Siemens
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Siemens FD63B125L is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase industrial power distribution systems. It features a 125A continuous current rating and a 600V AC voltage rating, housed within a compact FD frame measuring 150mm wide by 250mm high by 170mm deep and weighing 10.031 lb. This thermal-magnetic breaker, part of the Sentron Series, offers LI (Long-time and Instantaneous) protection functions and is certified to UL, CSA, and IEC standards for global compliance. Its 35kA interrupting rating at 480V AC and feed-thru connection make it suitable for integration into various panel types including S4, P4, SPP, and F2, typically protecting conductors from 6 AWG to 350 KCMIL.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, FD Frame
  • Voltage Rating: 600V AC
  • Current Rating: 125A
  • Dimensions: 150 x 250 x 170 mm (W x H x D) / 5.906" x 9.843" x 6.693"
  • Standards: UL, CSA, IEC Certified
  • Applications: Industrial Power Distribution, Panelboards (S4, P4, SPP, F1, FC1, FCII, CDP-5, CDP-6, SB1-3, S5, P5, SPP/FPP, F2)
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • AIC Rating: 35kA @ 480V AC
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI (Long-Time & Instantaneous)
  • Frame Size: FD Frame
  • Trip Type: Thermal Magnetic
  • Panel Type: S4, P4, SPP, F1, FC1, FCII, CDP-5, CDP-6, SB1-3, S5, P5, SPP/FPP, F2
  • Breaker Type: Molded Case
  • Temp Rating: -25°C to +70°C (-13°F to 158°F)
  • Wire Size: 6 AWG - 350 KCMIL (Copper) / 4 AWG - 350 KCMIL (Aluminum)
  • Certification: UL, CSA, IEC
  • Mounting: Panel Mount
  • Family: Sentron Series
  • Additional Info: Includes Line and Load Side Lugs (TA1FD350A)


Product Identification
  • UPC: 783643005303
  • GTIN: 00783643005303