Fits compatible Square D QO load centers with a 1-3/8" gap
Safely power multiple circuits through your breaker panel
Flexible and economical alternative to a transfer switch
MADE FOR SQUARE D QO PANELS: The Westinghouse WLock QO Interlock Kit fits compatible "G" and "S" Series NEMA 1 indoor and "G" and "S1" Series NEMA 3R outdoor QO load centers; For use with QO2 two-pole main breakers (150-225A) and QO two-pole breakers (15-125A) for generator connection
FLEXIBLE, COST-EFFECTIVE CONTROL: Manual transfer switches limit generator power to pre-selected circuits and cost more to buy and install; Interlock kits let you directly manage your breaker panel, so you can choose which circuits to power; They also eliminate the hassle of running extension cords
PREVENTS DANGEROUS BACKFEED: Physically prevents the utility main breaker and generator breaker from being switched on at the same time, so generator power can never feed back onto utility lines and endanger line workers or damage your equipment
ELECTRICIAN-READY: To be installed by an electrician per local codes and regulations; Includes a template and matching drill bits; Verify panel series and breaker configuration before ordering
COMPLETE INSTALLATION KIT: Includes 1 x interlock plate, 1 x retaining bracket, 1 x drill template, mounting nuts and bolts, 1 x 3/16 in and 1 x 1/16 in drill bits, 1 x thread sealant and owner’s manual; Straightforward install, no extra parts needed
PREMIUM DURABILITY: Made from corrosion-resistant metal which provides long-lasting performance and allows for use with both indoor and outdoor rated enclosures