Rugged, heavy duty, screw type wiring terminals ready to wire to contactor base.Fit Type: Universal Fit. Time delay circuit board ensures generator voltage is at a stable level before transfer occurs. Automatically senses generator power and prevents two power sources from entering the AC Distribution Panel at the same time. Easy-to-remove protective cover with wiring schematic inside. 240 VAC, 50 Amps. One-year limited warranty.