Feature List Body Construction Durable injection-molded Plastic Polycarbonate wire cover. Galvanized steel mounting plate, includes one 7/8" knockout in the center that allows feeding from junction box using flexible or rigid conduit. Tamper-proof steel mounting screws secure wire cover to plate.Current Limiting Circuit Breakers Single pole current limiters limit the current that can be consumed on the track section being fed. Easily resettable in the event of an over-current situation. Illuminated rocker switch is easily seen from floor level to confirm that power is being supplied to track circuit. Can be used as a standard ON/OFF switch.Electrical Rated for 120V AC / 60Hz operation. All wiring should meet national and local electrical codes. Use 12 gauge, 90°C minimum power supply wire. One ground terminal for supply ground wire provided on mounting plate.Load Limitation Leave at least 25% of circuit capacity open to accommodate "InRush Current" for LED fixtures. Specific system properties may require more capacity.Compatibility Compatible with A-Line's single circuit track only (ATK series).Mounting Mounts to track in suspended applications - not intended to be installed over a junction box.Approvals cULus listed.