Potter PS40-1 PS40 Series Supervisory Pressure Switch for Dry Valves with One Set SPDT Contacts

Protect your fire suppression and dry-pipe systems with the Potter Electric Signal PS40-1 supervisory pressure switch — engineered to deliver reliable pressure supervision and simplify integration with alarm and monitoring systems. The PS40 Series is factory-set to 40 PSI and provides clearly defined trip points (10 PSI drop at 30 PSI and 10 PSI rise at 50 PSI), so you get consistent, predictable supervision of air/nitrogen and water supplies. The PS40-1 offers one set of SPDT contacts for straightforward connection to fire alarm control panels, building automation, or security monitoring platforms. Built for commercial installations, its non-corrosive pressure connection and non-conductive enclosure resist harsh environments while two 1/2" conduit entrances and separate wiring chambers make wiring fast and organized. Ideal for dry pipe systems, pre-action zones, pressure tanks and other fire suppression applications, this pressure switch helps minimize downtime and supports code-compliant supervision. Specify the Potter PS40-1 for robust, professional pressure monitoring—contact us to discuss integration with your fire alarm or security system.

• Provides dependable supervisory pressure monitoring for dry-pipe and pre-action fire sprinkler systems, reducing false alarms and improving system reliability
• Factory-set for 40 PSI with defined trip points (±10 PSI) for fast detection of pressure loss or gain
• One SPDT contact output enables seamless integration with fire alarm panels, building management systems, and security monitoring
• Durable, non-corrosive pressure connection and non-conductive enclosure deliver long service life in commercial and outdoor environments
• Two 1/2" conduit entries and isolated wiring chambers simplify installation and maintenance, saving labor time on site