Barksdale D2T-M3SS Pressure Switch

The Barksdale DPD2T-M3SS pressure switch is a rugged mechanical differential switch designed for dependable pump and compressor monitoring in harsh industrial environments. This SPDT device features tamper-proof external adjustment and a NEMA 4 aluminum housing, enabling reliable operation in wet or dusty settings. It actuates with a tight hysteresis, 2.85 psi on decreasing pressure and 3 psi on increasing pressure, providing clear cut-in and cut-out signals. Rated for up to 500 psig gauge proof pressure, the switch suits high-pressure applications while remaining compact and durable. Electrical capabilities cover a wide range: up to 10 A at 125/250 VAC, 3 A at 480 VAC, and 0.5 A at 125 VDC (0.25 A at 250 VDC), allowing integration with common control circuits and relays. The MFG item number is DPD2T-M3SS, and this model sits within Barksdale’s DPD2T family of differential pressure switches. Typical applications include pump and compressor monitoring, machine tools, HVAC systems, engine monitoring, hydraulic circuits, filtration setups, and metalworking environments where reliable differential sensing is crucial. With a gross weight around 3.5 lb, the DPD2T-M3SS is suited to panel mounting in industrial control panels, delivering dependable performance where precise pressure differentiation controls a system.