Snubbers normally furnished with Eurotherm relay output type controllers
Attach these across the appropriate output or alarm relaycontacts when driving AC inductive loads (mechanical contactors and solenoids). Do not use snubbers when driving high impedance loads. The snubber passes 1mA in 120Vac circuits, and 2mA in 240Vac circuits; this is sufficient to hold in certain relays with high impedance coils and should not be used in such installations.