Power Transfer Switch; Transfers Power From Shore To Generator; Automatic; 120 Volt AC; 50 Amp; 8-1/2 Inch Length x 4-1/2 Inch Width x 8-1/2 Inch Height Intended for use as an electrical transfer switch to automatically switch multiple sources (from one to another), i.e. switching from shoreline to generator power. It is primarily designed for installation in conjunction with a generator having a rated output no larger than 12 Kilo Watts. Type: Automatic Voltage: 120 Volt Ampere Rating: 50 Amp Length (IN): 8-1/2 Inch Width (IN): 4-1/2 Inch Height (IN): 8-1/2 Inch Color: Silver Features & Benefits Automatically Switches From Power Cord To Generator Heavy Duty Contactor Assembly Specifically Designed For Rigorous Use, Will Handle 50 Ampere Power Cord And Up To 12 Kilo Watts Generator Transfers Both Hot And Neutral Legs Simultaneously Economical And Reliable Time Delay Switches Automatically From Shoreline To Generator Power Capable Of Monitoring For Low Generator Voltage Built-In Time Delay Allows Generator To Get Up To Speed Quick And Easy Installation Limited 1 Year Warranty