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Siemens 21-B158SF6 - SF6 Circuit Breaker 600V (70-250A)

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Siemens 21-B158SF6 is a circuit breaker designed for providing reliable overcurrent protection in industrial power distribution systems. It operates with a voltage rating of 600V AC and offers a current handling range from 70A to 250A, housed within a robust SF6-insulated construction utilizing copper components. This dual/twin branch configuration breaker is engineered for compliance with industry standards and is compatible with FD, FXD, HFD, HFXD, HHFD, and HHFXD panelboard frames including SPP, S4, P4, FPP, and F1 panel types. Its design ensures dependable performance for safeguarding critical circuits in commercial and industrial facilities.

Key Features & Specifications
  • Type: SF6-insulated circuit breaker, dual/twin branch configuration
  • Voltage Rating: 600V AC
  • Current Rating: 70A - 250A
  • Compatible Frames: FD, FXD, HFD, HFXD, HHFD, HHFXD
  • Panel Type: SPP, S4, P4, FPP, F1
  • Breaker Type: FD, FXD, HFD, HFXD, HHFD, HHFXD
  • Metal Type: Copper
  • Weight: 12 lb
  • Item Subcategory: Mounting Hardware
  • Family: FD