Merz load break switch / changeover switch – safe mains-off emergency power switching for electrical distribution systems

Merz changeover switches are manual switching devices for reliably switching between mains power, off position, and emergency power source. They are used in electrical distribution systems and, thanks to the defined switching sequence mains – off – emergency, enable a clear separation of power sources. The mechanically interlocked switching positions ensure safe operation and prevent unintentional parallel power supply.

The changeover switches are available in multi-pole versions and designed for different rated currents. This makes them suitable for a wide range of applications in residential, commercial, and industrial buildings where manual switching between two energy sources is required. Thanks to their robust construction, Merz changeover switches are ideally suited for permanent installation in distribution boards.