Potential Relay model 90-66 the relay that disconnects the start capacitor once the idler motor reaches operating speed. If your phase converter’s start capacitor keeps blowing, or the converter won’t transition smoothly from start to run, the potential relay is often the culprit.

Phoenix Phase Converters Ships from Stock Specifications

What’s Included

• Potential Relay 90-66

Critical Starting Component

The potential relay senses back-EMF voltage and disconnects the start capacitor at the right moment. A failed relay can leave the start cap in circuit, causing it to overheat and fail.

Protects Your Start Caps

If you’re replacing start capacitors frequently, check the potential relay it may not be disconnecting the cap on time, causing premature failure.

(800) 417-6568

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Potential Relay model 90-66 for rotary phase converter starting circuits. This relay disconnects the start capacitor once the idler motor reaches operating speed. A failed potential relay is a common cause of repeated start capacitor failures. If your phase converter blows start caps frequently or doesn’t transition smoothly to run mode, replace this relay. Call (800) 417-6568 for troubleshooting.