Feature: 1. Function: This battery isolator switch is used for 32V DC systems to isolate and secure the electrical system, to achieve safe switching between batteries, loads, and charge sources. 2. Power Saving: The battery circuit shut off switch help eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely. 3. Material: Tinned copper studs offer high electrical conductivity and rust proof, wear resistant, ignition protection, and one piece binding post design will not loosen over time. 4. Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability. 5. Wide Application: This black battery disconnect switch is appliacable for marine, Boat, RV, truck, modified car, with 1/2in terminal stud size, adaptable for M6 screw. Specification: Item Type: Marine Master Battery SwitchMaterial: ABS, tinned copper .Switch Type: Single circuit ON OFF Color: Grey Switch Positions: 2 Battery Combine: No Alternator Field Disconnect: No Maximum Voltage: 32V DC Terminal Stud Torque: 220 in lb (24.86 Nm) Continuous Rating: 600A Intermittent Rating: 900A (5 min) Cranking Rating 10 sec: 2750A Cranking Rating 1 min: 1325A Battery Inputs: 1 Cable Clearance For 4/0 AWG Cables: 1.10in (27.94 mm) Cable Quantity to Meet Ratings: Two Cables Cable Size to Meet Ratings: 4/0 AWG (120mm sq) Mounting Holes: Accept 1/4in (M6) Screw Terminal Stud Size: 1/2in (M12) Fitment:Suitable for marine, Boat, RV, truck, modified car Package List: 1 x Master Battery Switch4 x Screw