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RFS-4001

Differential Pressure Switches

Models RFS-4001-025 and RFS-4001-031 Differential Pressure Switches are general-purpose, airflow-proving switches designed for HVAC and building automation applications. They may be used to sense positive, negative, or differential air pressure. The plated housing contains a diaphragm, calibration spring and snap-acting switch. The Model RFS-4001-025 pressure connections located on each side of the diaphragm, accept copper or flexible 1/4" OD tubing. The Model RFS- 4001-031 has tri-barb connectors that accept 1/8", 1/4", and 5/16" ID flexible tubing. An enclosure cover guards against accidental contact with the live-switch terminal screws and the setpoint-adjusting screw. The enclosure will accept a 1/2" conduit connection.


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Features
  • Two-year warranty
  • Adjustable setpoint
  • Knockout for 1/2" conduit
  • Enclosed terminals
  • Compression or barb fittings
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Specifications

Contact Rating:300 VA pilot duty @ 115-277 VAC, 15A non-inductive to 277 VAC

Contact Type:SPDT

Setpoint Range:0.15" to 5.0" W.C. (37.3 to 1245 Pa)

Differential:Progressive, increasing from 0.05" W.C. at minimum setpoint to 0.3" W.C. at maximum setpoint

Overpressure:0.5 psig (3.5 kPa)

Life Expectancy:100,000 cycles minimum

Operating Temperature:-40° to 180°F (-40° to 82°C)

Mounting:Any vertical plane, avoid upward pressure connections

Process Connection:

RFS-4001-025:1/4" compression, suitable for use with 1/4" copper or plastic tubing

RFS-4001-031:Tri-barb connectors for 1/8", 1/4" and 5/16" ID tubing

Wiring Terminations:Screw terminals with cup washers

Approvals:UL and cUL, file #MH6213, CSA

Weight:14 oz (0.4 kg)

Warranty:2 years

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Certifications






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Products

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QtyModelDescriptionIn StockList PriceInternet Price
RFS-4001-025 0.15 to 5.0 in WC, Compr. Fittings In Stock36.9529.56
RFS-4001-025-C 0.15 to 5.0 in WC, Compr., Kele calib INFO57.9546.36
RFS-4001-031 0.15 to 5.0 in WC, Tri-barb Fittings In Stock35.9528.76
RFS-4001-031-C 0.15 to 5.0 in WC, Tri-barb, Kele calib INFO56.9545.56
RFS-4001-092 DIFF PRESS SWITCH In Stock40.9532.76
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Accessories
QtyModelDescriptionIn StockList PriceInternet Price
A-301-K STATIC PRESSURE TIP, 1/4in COMPRESSION In Stock22.0017.60
A-301-K STATIC PRESSURE TIP, 1/4in COMPRESSION In Stock22.0017.60
A-302-K STATIC PRESSURE TIP, 1/4in BARB In Stock20.2216.18
A-302-K STATIC PRESSURE TIP, 1/4in BARB In Stock20.2216.18
A-308-K STATIC PRESSURE FITTING In Stock9.107.28
A-308-K STATIC PRESSURE FITTING In Stock9.107.28
A-345-K MOUNTING FLANGE FOR A-301-K & A-302-K In Stock12.7310.18
A-345-K MOUNTING FLANGE FOR A-301-K & A-302-K In Stock12.7310.18
T-101 1/4in OD BLACK PLASTIC TUBING 250 FT SPOOL In Stock50.5040.40
T-101 1/4in OD BLACK PLASTIC TUBING 250 FT SPOOL In Stock50.5040.40
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