vacuum circuit breaker / medium-voltage / pole-mounted

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vacuum circuit breaker vacuum circuit breaker - Fusesaver™


  • Type:


  • Electrical characteristics:


  • Other characteristics:


  • Current:

    40 A, 100 A, 200 A

  • VAC:

    Max.: 27 kV

    Min.: 15.5 kV


By virtually eliminating the impacts of temporary faults on lateral lines, Fusesaver™ helps utilities to increase network reliability while minimising operating costs of overhead MV networks. The exceptional small footprint and light weight of the device enables a quick and easy installation and fast commissioning. Self-powered from line current, the circuit breaker has the capability for multi-phase fault clearance for both transient and permanent faults. The smart system provides wireless connectivity for remote access and can be easily integrated into utilities SCADA network via a Remote Control Unit (RCU).

Fusesaver™ can detect, open and clear a fault in as little as one-half cycle (10ms) and is configurable to either protect or replace the fuse.

Fusesaver™ can be installed in series with the fuse
When it senses a fault current, it will open before the fuse can melt, and clear a transient fault.

Then the Fusesaver™ closes again reconnecting supply. If the line is still faulted the fuse will now operate to clear the permanent fault. This is the traditional Open-Close (OC) Fusesaver™.

Replace the fuse altogether
When installed in this manner, the Fusesaver™ can perform the same Open-Close functionality to clear a transient fault but can also perform a second "Open" operation (OCO) to clear a permanent fault.

Other SIEMENS Medium-voltage – Power distribution products

Medium-voltage systems