Battery Master Switch 250A with Voltage Indicator 250A DC battery master switch with voltage display is a heavy-duty battery isolator with an integrated digital LED display showing the battery voltage in real time (560V DC). Makes it easy to monitor battery status and charging. The switch is rated for 250A continuous current and handles high starting currents , making it ideal for motorsport and other demanding applications. Copper bus bars and terminals provide low resistance and high reliability. Simple ON/OFF operation via a robust rotary knob. Flame-retardant housing and automatic shutdown of the voltmeter in OFF position prevent power leakage. Easy side-terminal mounting makes it compatible with many vehicles. Technical specifications: Function: ON / OFF Operating voltage: 560V DC Continuous current: 250A DC Intermittent current: 300A DC (30 min) Starting current: 1250A DC (10 sec) Bolt size: M10 (3/8") Contact material: Tin-plated copper Housing material: Flame-retardant ABS pl