Thermal overloads for pressure switches protect devices from damage that can be caused by operation at excess temperatures. These thermal overloads interrupt a power supply when a predetermined temperature threshold is exceeded and cause the switch to cease operation.

These underload valves for pressure switches remove excess pressure and release air from within a compressor's tank. These valves replace existing defective or leaky valves.

Shunts and undervoltage relays for pressure switches protect sensitive equipment from damage in case of voltage drops. These relays incorporate contacts that switch on when the voltage running over them falls below a predetermined level.