The Sigma Switches Black Switch Double Pole Double Throw is a reliable and durable switch designed to meet your RV's electrical needs with ease. A Double Pole Double Throw (DPDT) switch is a switch that has 2 inputs and 4 outputs; each input has 2 corresponding outputs that it can connect to. Each of the terminals of a double pole double switch can either be in 1 of 2 positions. UL, CUL, RoHS compliant, guaranteeing adherence to safety and quality standards. Self-cleaning contacts ensure optimal performance and longevity. Heavy-duty switching mechanism for durability and reliability. Fully enclosed active switching elements provide enhanced safety and protection. Metal Plunger withstands high temperature. Switch is Momentary On/Off / Momentary On Function. Mounting:No hardware or tools needed. Self locks in to proper panel cutout 22.5mm(.886") x 30.0mm(1.181") Acceptable panel thickness range is from .64mm (.025") to 4.57mm (.180")Standard termination is solderless 6.35mm (.250") wide x .81mm (.032") thick Electrical Rating:20A - 125CAC15A - 250VAC40A Peak / 20A Continuous - 12 VDC Factory RatingAll ratings based on load per pol, opposite polarity