Low Voltage Residential Generators Standby Power (Generators) - Generators Accessories are Residential Enclosures Standby Power (Generators). Sub BrandStandby Power Systems Type Manual Transfer Interlock Kit Application For use onload centers or meter combinations that will accept 2-pole circuit breakers opposite one another Standard UL/NEMA 1/3R Amperage Rating 225A Mounting Flush or Surface Length 3.6 Width 5.1 Height 12.9