Heavy Duty Square D air system pressure switch.
P/N 9013 GHG5J57X Load-Unload pressure factory set at 120-150 PSI
single 1/4 NPT bottom inlet connection.
1/4 inch side mounted compression unloader valve.
NEMA 1 General Purpose enclosure.
1/2 trade size knock-outs on 3 sides
Two 2 pole contacts open on pressure rise
Approx. Size 3-1/2″ Sq. x 4″ High