Mechanical pressure switch LF15

differentialNCG 1/4

Product overview
LF15 series pressure switches regulate pressure in air compressor tanks to operate between two preset pressure values. Models are available with or without an unloading valve; the unloading valve reduces motor load during restart. A manual handle option enables manual power-off. The four-way base connection simplifies installation of auxiliary components.

Parameters
Model: LF15
Media: Air; non-flammable, non-hazardous, non-corrosive gases
Pressure adjusting range: 0.3–1.2 MPa
Differential pressure range: 0.15–0.45 MPa
Factory settings: configurable per customer requirements
Pressure setting point tolerance: ≤5% (operating pressure value)
Maximum working pressure: 1.2 MPa
Rated voltage/current/frequency: 120 VAC / 240 VAC, 26 A / 20 A, 50 Hz / 60 Hz
Contact mode: NC (normally closed)
Connector types: Female-1-Port, Male-1-Port, F/M-2-Port, Female-4-Port
Interface threads: NPT1/4, R1/4, G1/4 (customizable)
Unloading valve: optional; direction and liner diameter customizable
Unloading valve liner diameter options: φ6.0 mm, φ6.4 mm, φ6.5 mm (customizable)
Manual mode: optional (manual power-off handle)
Operating temperature: -20 °C to 80 °C
Voltage resistance: withstands 2500 V for 1 minute without breakdown
Installation orientation: vertical or horizontal
Protection grade: IP20

Dimension
Dimension drawings and product dimension images are available for installation reference.

Documents

• Air Compressor Pressure Switch LF15 (PDF)
• CSA Certificate - Pressure Switch LF15 (PDF)

Technical characteristics

• Model: LF15
• Application: pressure control in compressor tanks between two preset values
• Pressure adjusting range: 0.3–1.2 MPa; differential: 0.15–0.45 MPa
• Maximum working pressure: 1.2 MPa
• Electrical rating: 120 VAC / 240 VAC, 26 A / 20 A, 50/60 Hz
• Contact mode: NC
• Connector and thread options: Female/Male ports and NPT1/4, R1/4, G1/4 (customizable)
• Optional unloading valve and manual shutdown handle
• Operating temperature: -20 °C to 80 °C; protection class IP20
• Pressure setting tolerance ≤5%; voltage withstand test 2500 V / 1 min