Merrill MPSHD3050 Heavy Duty Pressure Switch

Merrill MPSHD3050 Heavy Duty Pressure Switch -Preset On/Off: On at 30 psi/ Off at 50 psi -Pressure Setting Minimum On/Of: On at 30 psi/ Off at 50 psi -Pressure Setting Maximum On/Off: On at 170 psi/ Off at 190 psi -240/600 Volt Three Phase 5 hp Pump -120/240 Volt Single Phase 3 hp Pump -Extra Large Case for Wiring with Heavy-Duty Gauge Wire -Each Turn of the Adjustment Screw = 14 psi