H50PS series pressure switch is a miniature pressure switch. It controls the circuit open or close on pressure of the controlled medium increase or decrease. It is widely used in powershift transmissions, anti-skid braking systems, excavator hydraulic systems, air compressor systems, and other industry equipment requiring pressure protection.

H50PS pressure switch is an apparatus, which can feel system pressure by diaphragm, and transfer the pressure to spring, push contacts of switch, then cut or close circuit when pressure arrives set point. H50PS series switch is specifically designed to stand up to extended duty applications. The main difference between H50PS and H20PS is: H50PS series pressure switch is realized by compressed spring, however contact operation of H20PS pressure switch is arose by diaphragm flipping.