Switch Assemblies & Kits

McDonnell & Miller model number 7B is an automatic reset proportioning switch assembly for model number 93, 193, 94, and 194 controls. This switch features a single pole double break switch for multi-function for alarm or valve actuation or low water cut-off. Proportional signal controls a proportioning valve to maintain a constant water line. Learn More

McDonnell & Miller model number 7BM is a manual reset proportioning switch assembly for model number 93, 193, 94, and 194 controls. This switch features a single pole double break switch for multi-function for alarm or valve actuation or low water cut-off. Proportional signal controls a proportioning valve to maintain a constant water line. Learn More

McDonnell & Miller model number SWA-42S is a snap switch assembly with automatic reset for series 42 controls. Learn More

McDonnell & Miller 310462 model SWA-150S snap-action switch assembly with automatic reset for Series 150S and Series 157S low water cut-offs. Learn More

McDonnell & Miller 310464 model SWA-150S-MD snap-action switch assembly with automatic reset and maximum differential operation for Series 150S and Series 157S low water cut-offs. Learn More

McDonnell & Miller 310468 model SWA-158S snap-action switch assembly with automatic reset for Series 158S low water cut-offs. Learn More

McDonnell & Miller 310470 model SWA-159S snap-action switch assembly with automatic reset for Series 159S low water cut-offs. Learn More

McDonnell & Miller 354089 model SWA-150S-M snap-action switch assembly with manual reset for Series 150S and Series 157S low water cut-offs. Learn More

Johnson Controls pneumatic gradual switch conversion kit to convert any S-224 switch to a 2 psi span. Learn More

Johnson Controls SPDT snap action auxiliary switch kit (one switch) for M100 series motor actuators to provide switching functions. The switches are for use in heating, refrigeration, air conditioning, and industrial applications. Learn More

Johnson Controls SPDT snap action auxiliary switch kit (two switches) for M100 series motor actuators to provide switching functions. The switches are for use in heating, refrigeration, air conditioning, and industrial applications. Learn More