Siemens Low Voltage Residential Generators Standby Power (Generators) - Generators SL Type TS 3-Phase 277/480v are Residential Enclosures Standby Power (Generators). Sub Brand Standby Power Systems Type SL Type Transfer Switches Special Features No Service Disconnect Application To swtich power source from utility to gerneator automatically in outage situation Standard NEMA 3R Voltage Rating 277/480V Amperage Rating 800A Phase 3P Enclosure Steel Mounting Mounted to EnclosureLength 10 Width 22 Height 25