This relay provides dual battery separation with a start function, designed for automotive network switches. Key benefits and features - Enables safe dual battery separation with a start on/off control, helping protect starting and auxiliary batteries from cross-connection and excessive drain. - High current capability: 4-pole design rated up to 500 A at 12 V, suitable for demanding automotive loads. - Automotive oriented: specifically designed for network switching in vehicle electrical systems. - Reliable power management: controls the flow of power within the vehicle electrical network for consistent starting and operation of accessories. - Easy integration for 12 V systems: compatible with typical automotive wiring and dual battery configurations, built for robust vehicle environments. Specifications and attributes (as described) - Poles: 4 pole relay - Current rating: up to 500 A at 12 V - Function: start on/off relay for dual battery systems - Application: automotive, with emphasis on network switching and battery separation - Performance: designed to deliver reliable control of power flow in the vehicle electrical network Practical use scenarios - Scenario 1: In a van with a dedicated auxiliary battery, the relay isolates the auxiliary bank from the starting circuit when the engine is off, preventing parasitic drain and ensuring the starting battery remains ready. - Scenario 2: An off-road or work vehicle with high electrical demand (lights, winch, inverter) uses the relay to switch between battery banks, keeping starting power independent from heavy accessory loads. - Scenario 3: A fleet vehicle with long idle periods uses the relay to maintain proper separation between batteries, then engages the start circuit when the engine needs to be started, supporting reliable engine starting and protection of electronic systems.