System Sensor EPS40-2


High/Low Pressure Supervisory Switch, Two SPDT, 10–100 PSI

Availability: In Stock

Condition: New
Brand: System Sensor
Status: Active
SKU: 31758
Manufacturer Part #: EPS40-2


The EPS40-1 has a single SPDT switch while the EPS40-2 model contains two SPDT switches. The EPS40 Series features field adjustable pressure sensitivity to provide an alarm response between 10 and 100 psi. All models are factory set for use in a nominal 40 psi system. The EPS40-1 is factory set to respond at 30 psi at decreasing pressure while the EPS40-2 is factory set to respond at 50 psi on rising pressure and 30 psi at decreasing pressure. The pressure adjustment wheel requires no special tools and does not affect switch synchronization on the EPS40-2. The EPS40-1 and EPS40-2 supervisory pressure switches are NEMA 4 rated.

Additional information

Weight 1 lbs
Dimensions 5 × 5 × 5 in



Production Status



  • Sensitivity adjustment wheel, no special tools required
  • Reinforced diaphragm resists pressure spikes
  • Two conduit entrances
  • Both one- and two-switch models available


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Supervisory Pressure Switches; EPS40-1 and EPS40-2


System Sensor - Data Sheet