Relay versions

In compressor protection devices for 24 .. 240 V AC relays are used, that are designed for 24 .. 240 V switching voltage. These need switching currents ≥ 0.02 A for long term reliable switching.

In compressor protection devices for 24 V DC relays are used with additionally gold plated contacts. These are capable of switching max. 24 V nominal voltage at max. 0.01 A without getting damaged. When used with higher voltage or current, the gold plating is damaged and the capability to switch so low voltage and current is lost. The relays will afterwards have the same switching capabilities like those of the devices for 24 .. 240 V AC.