The Progressive Dynamics 5200 Series Automatic Transfer Switch features rugged, heavy duty, screw-type wiring terminals ready to wire to the contactor base and ensuring easy wiring and preventing wiring errors. A time delay circuit board ensures the generator voltage is at a stabile level before the transfer occurs. AC-detect option for auto generator start compatibility. 70 Amp neutral rating. Dimensions: 10.38" L x 6.88" W x 4.5" H. Weight: 7 lbs.