LXPRC/S-4W Three Phase Voltage Monitoring Relay

• L-Series Dimensions (PDF)
• LXPRC/S-4W Connection Diagram (PDF)
• LXPRC/S-4W Function Diagram (PDF)

• L-Series UL Certification (PDF)
• Declaration of Conformity - L-Series 3-Phase - LVD (PDF)
• Declaration of Conformity - L-Series 3-Phase - EMC (PDF)
• REACH Declaration (PDF)
• RoHS Certificate of Compliance (PDF)
• Certificate/Declaration of Origin (PDF)

Typical applications include:

• Lift and elevator control panels
• Building-services pump panels
• Packaged HVAC equipment
• Industrial machinery with neutral-fed controls

Key benefits:

• Helps protect against unsuitable supply voltage — Under and over voltage monitoring allows an external control circuit to inhibit equipment when the measured supply leaves the set voltage window.
• Helps prevent incorrect motor rotation — The relay requires correct phase sequence before energising, allowing a motor contactor to be inhibited when the incoming phases are reversed.
• Responds to phase and neutral faults — Phase-loss detection and neutral-loss detection in the supported four-wire arrangement can release the control permissive when the incoming supply is incomplete.
• Helps avoid unnecessary voltage-fault trips — An adjustable fault delay allows brief voltage deviations to be tolerated before the relay changes state, subject to the documented immediate-trip conditions.