The JET JT9-JCDC3-01SC Dust Collector Start Capacitor 500 MFD 125 VAC provides starting support for compatible dust collector motors. This replacement capacitor stores electrical energy and releases it during startup, supplying the additional power needed to begin motor rotation. Proper operation supports reliable starting and normal motor performance. It can replace a weak, damaged, ... https://www.wholetoolbox.com/jet-jt9-jcdc3-01sc-dust-collector-start-capacitor-500-mfd-125-vac/JT9-JCDC3-01SC.html