The M5000 PVC (or PVC5000) is a shaft speed switch, with a corrosion-resistant Polyvinyl chloride enclosure and a relay setpoint range of between 100 and 5000 rpm. The relay can be set to trip within this range, and in the event of rotational failure, such as broken drives, belt slippage, product overloads, clogs or jams, the SPDT 5-Amp control relay can be used to shut down equipment or alarm.