Siemens 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 two QNR/MD-TR frame circuitbreakers side by side OR will accept two QN/MD-T circuit breakers side by side Standard UL/NEMA 1/3R Amperage Rating 225A Mounting Flush or Surface Length 1 Width 3 Height 4