The Ruelco SS-E electric pressure switch is operated by pressure acting on a piston opposing an adjustable spring force. It functions as either a normally closed or normally open switch, depending on which contacts are used. Pressure applied to the sense port will cause the valve to operate.

• 316 stainless steel construction (models to N.A.C.E. MR0175 available).
• Standard base range 10-10,000 PSI (with 1/4″ piston option).
• Operating pressure range from .5 to 20,000 PSI.
• Holds constant and accurate set points.
• Designed for 1% plus or minus repeatability on set points.
• Minimum deadband between trip and reset pressure.
• Uses hermetically sealed, snap acting, dry contact switches rated explosion proof (U.L. rated Class 1, Div. 1, Groups A, B, C, D).
• Spring may be replaced with instrument and sensing pressure present in the sensor.
• Vent above sensing piston prevents high pressure from entering instrument supply should a piston seal leak develop.
• Optional indicating scale available upon request (Model 4E03).
• SIL 3 Certified models available.

Safety Integrity Level