The Mastervolt transfer system helps you regulate your grid, generator or inverter power and automatically selects the right power sources at the right time. This automatic switching system, when combined with an IVET transformer, can adjust shore power to suit the onboard system. As a result a 230 V/50 Hz system can operate with an American or Caribbean shore connection. You must still ensure that the frequency on board (50 of 60 Hz) is the same as the frequency of the incoming current. The switch prevents damaging contact between the inverter and other 230V sources, and, as well as being fully compatible with Mastervolt systems, is suitable for installations from other brands, other generators and/or inverters. General specifications Nominal input voltage: 230 V (50/60 Hz) Input voltage range: 200-250 V Number of inputs: 2 Number of outputs: 1 Dimensions, hxwxd: 200 x 110 x 115mm (7.9 x 4.3 x 4.5 inch) Weight: 1.2 kg (2.6 lb) Technical specifications Connection for remote control: no LED indication on enclosure: no Nominal input current generator: 20 A Nominal input current grid: 20 A Generator input switch: no Time delay generator input: 0-10 sec (adjustable) Nominal current power output: 20 A Automatic circuit breakers: no, system dependent Power consumption (AC all inputs): 7 W Power consumption (only inverter power): 0 W Transfer time: switch on 12-22 ms / switch off 4-19 ms Temperature range (specified): -5 C to 60 C (23 F to 140 F) Temperature range (ambient temp.): -25 C to 70 C (-13 F to 158 F) Temperature range (storage/non operating): -60 C to 80 C (-76 F to 32 F) Relative humidity: max. 95%, non condensing Frequency watch: no Cable size: 0.5-10mm?/ AWG 20-7 Protection degree: IP55 MasterBus compatible: no