50 Amp Generator Switch - This switches power from shoreline to generator simply by starting the generator, it is automatic, No manual switching required. Features include: Generator switching delay, averaging 20 seconds, allows generator to stabilize before connection to load. Generator command with DC coils for voltage stability under low line voltage conditions. UL listed, Quality components ensure reliable, smooth power transfer performance. Installation applications allow for both 30 and 50 amp service. 70 amp neutral capability is available for In-Phase generators with the (supplied and installed) jumpers installed. Metal chassis provides unmatched safety and long term protection for power service selection. Not ignition protected. Suitable for rated outputs not larger than 240 Volt AC, 50 Amps per pole, 4 poles. Dimensions: 6-1/4 inch x 3-3/4 inch x 7-1/2 inch.