Square D Pumptrol, water pump switch 9013FS, adjustable diff., 20 40 PSI

Rugged, robust construction provides a long life and provides years of uninterrupted, worry-free service
It has visible vertical contacts, easy to inspect without removal
Designed for the direct control of motors in pump applications
Low pressure cut-off (AUTO-START-OFF) operates at approximately 10psig below cut-in and will turn off the pump
Offers 18 months warranty