The Armstrong Furnace R33191A001 Relay is a mission-critical Time Delay Relay (TDR) designed for HVAC blower motor control and sequence timing

Engineered for maximum versatility

Durable Construction: Engineered with a standard 3" insert depth and 1/2" OD for rapid

As the direct replacement for the 6968 restring kit

Field Controls 46086400 Safety Switch The Armstrong Furnace R33191A001 RelayThe Field Controls 46086400, also designated as the Model GSK 3, is a high reliability thermal safety switch engineered for installation on residential and light commercial gas furnaces, boilers, and water heaters. This SPST manual reset switch acts as a critical fail safe by monitoring for flue gas spillage caused by blocked flues, continuous downdrafts, or inadequate draft conditions. When the sensing element reaches 180 degrees Fahrenheit, the