Brennenstuhl compact circuit breaker adaptor rcd brennenstuhl 1290633 p the brennenstuhl compact circuit breaker adaptor rcd with test and reset button is ideal for use in the home garage or garden and is recommended for use with all electrical power tools p p designed to protect the user from the risk of electric shock rcd adaptors quickly detect and disconnect the circuit in the event of an earth connection leakage or if a power cable becomes damaged or severed p