Five Oceans Dual Battery Selector Switch, 250 Amp FO-3511 This Dual Circuit Simultaneously switches two isolated battery banks or combines battery banks to all loads Rated: 250 Amp Continuous duty at 12V, 350 Amp intermittent Silver plated brass stud bolts, Non-Corrosive grade metals Dimensions: 2 3/4" x 2 3/4" x 3 1/4" Positions: 1-2-Both-Off