This product is part of the Nema Pressure Switches range, an offer of electromechanical vacuum switches. This electromechanical vacuum switch has 2 NC, DPST-DB (double pole single throw, double break), form YY, snap action contacts. It has an adjustable differential scale for internal settings from 3inHg to 8inHg. The vacuum switch with an approximate adjustable differential at mid range of 5inHg to 10inHg and a maximum pressure of 150psi. It is furnished with screw clamp terminals for electrical connection and 1/4-18 NPSF for fluid connection. This vacuum switch has a diaphragm actuator which can be operated from any position and regulation of 2 thresholds. It is a NEMA 1 rated product. The enclosure is made of stamped metal. Its dimensions are 116.33mm (width) x 111mm (depth) x 181.1mm (height). It weighs 1.61kg. It is suitable for pressure controlling or monitoring of water pumps, compressors, agricultural/irrigation water systems, molding presses and injection molders. This product is certified by CSA and UL. It meets UL 508 standards. The 9016 GVG vacuum switches for direct control, designed primarily as companions to float switches commonly used in vacuum heating pumps. The Square D brand water pressure switch has expanded to industry leading Pressure Sensors and Switches.