McDonnell & Miller 5-M Switch 30067439-890 replacing a brittle or cracked

replacing a brittle or cracked boiler ignition lead is essential for preventing voltage leakage and ensuring consistent spark delivery

Its compact design is optimized for the rigors of mechanical rooms

Durable Construction: Engineered with a weather-protected housing to resist environmental corrosion and moisture ingress

Field-adjustable scales on the front allow for fine-tuning without specialized tools

McDonnell & Miller 5-M Switch 30067439-890 replacing a brittle or crackedThe McDonnell & Miller 5 M Switch (Part Number 110400) is a critical safety component designed for heavy duty steam boiler control. This manual reset general purpose switch is engineered specifically to interface with Series 93, 193, 94, and 194 combination low water cut off and pump controllers. Featuring a 2 SPDT (dual single pole, double throw) configuration, the 5 M allows for the simultaneous management of independent circuitstypically the burner