Hydro-electric pressure switches of model HED 8 are piston-type pressure switches used to monitor a pressure value in a circuit. As a pressure value is achieved (rising or falling), the HED micro-switch changes state, which can be used as an indicator for the next sequential operation or shutdown. The HED microswitch is not a current carrying device; it is an actuator/sensor. Features For subplate mounting For in-pipe installation As vertical stacking element, position of ports to DIN 24340 form A In horizontal stacking assemblies Five pressure stages, optional Adjustment option: – Rotary knob with scale Cable socket with circuitry (indicator lamp) – separate order rexroth pressure switch hed 8 pdf rexroth pressure switch hed 4 pdf rexroth pressure switch hed 5 r901017012 rexroth hed 4 oh 15 50 z14 hydro electric pressure switch rexroth pneumatic pressure switch