MARS 19166 Potential Relay or a high-pressure switch cutout

or a high-pressure switch cutout

ensuring the part meets strict professional and safety specifications

the 5-pin configuration is commonly used to carry both 24V power and low-voltage flame sensing signals in integrated ignition systems

Which terminal is which

MARS 19166 Potential Relay or a high-pressure switch cutoutThe MARS 19166 Potential Relay is a specialized HVAC compressor start relay designed for demanding capacitor start induction run (CSIR) and capacitor start capacitor run (CSCR) motor applications. Operating at a 395V continuous coil voltage with a robust 35 amp contact rating, this Type 166 potential relay accurately monitors back EMF to precisely manage start capacitor dropout. Engineered as a universal replacement relay, it features a non positional