Fritz Pohl

Variable high-current resistor, especially for use as protective element in power switching applications & circuit making use of high-current resistor

Method of establishing the residual useful life of contacts in switchgear and associated arrangement

Electromechanical switching device and arrangement with several such devices

High-speed circuit breaker

Method for determining switchgear-specific data at contacts in switchgear and/or operation-specific data in a network connected to the switchgear and apparatus for carrying out the method

Method and apparatus for determining the residual life of contacts in switching devices

Method and Device for the Secure Operation of a Switching Device

LV circuit short circuit branch - protects components against overcurrent by closing bridging branch to by=pass them when short circuit exists

METHOD AND DEVICE FOR DETERMINING THE REMAINING SERVICE LIFE OF A SWITCHGEAR

Differential current protection circuit breaker