1. Electricity - Electronics
  2. Switch and Relay
  3. Vacuum circuit breaker
  4. Siemens Medium-voltage – Power distribution

Vacuum circuit breaker Fusesaver™

vacuum circuit breaker
vacuum circuit breaker
vacuum circuit breaker
vacuum circuit breaker
vacuum circuit breaker
vacuum circuit breaker
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Electrical characteristics
Operating mode
Other characteristics
Primary current

40 A, 100 A, 200 A


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

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.