Explosion Proof Alarm Pressure Switch

Safe Signal’s EPSEXP series is designed to handle extreme conditions.

Robust Construction. The EPSEXP series consists of a rugged, NEMA 4 rated cast aluminum housing. Designed for both indoor and outdoor use, the EPSEXP series operates across a wide temperature range, from –40°F to 160°F.

Reliable Performance. The EPSEXP series cover is secured with a tamper resistant screw to prevent unauthorized tampering. Inside, two sets of SPDT (Form C) synchronized switches are enclosed in a durable terminal block to assure reliable performance.

Simplified Operation. Like all Safe Signal pressure switches, the EPSEXP series is designed for easy installation. The EPSEXP series includes a pressure adjustment wheel that requires no special tools. This feature permits field-adjusting of the activation switch.


  • Designed and approved to operate in hazardous locations
  • Rugged NEMA 4 rated cast aluminum housing
  • Field-adjustable pressure sensitivity
  • 1/2˝ NPT male brass fitting
  • Synchronized activation circuit
  • Two conduit entrances
  • Tamper resistant screw
  • SPDT (Form C) synchronized switches enclosed in a durable terminal block

These units are ideal for installation in hazardous locations classified as follows:

Class I, Groups B, C, D, Division 1 & 2

Class II, Groups E, F, G, Division 1 & 2

Class III, Division 1 & 2 Robust Construction.

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