Feature: 1. Red copper binding post: ensuring heavy current can be transited safely. 2. High current automotive relay and cell isolator. 3. 24V 500A heavy current relay, suitable for construction and machinery system. 4. High quality, ensuring the maximum electric current can be transferred. 5. Easy and effortless to use, simple installation. Specification: The relay is portable in size and weight. Convenient to install and remove. 24V 500A large current, can be severed as main switch, automotive start relay and cells isolator. Put this relay between cells as an isolator or in the main impetus. Features: Red copper binding post: ensuring heavy current can be transited safely. High current automotive relay and cell isolator. 24V 500A heavy current relay, suitable for construction and machinery system. High quality, ensuring the maximum electric current can be transferred. Easy and effortless to use, simple installation. Specifications: Contact Load: 500A Contact form: 1H(1A) Rate Of Work: 24V Main Color: Black Mechanical Life: 10,000,000 Load Material: AgSnO Max Switching Current: 500A Pin Number: 4 Pin Temperature:-30℃~+80℃ Humidity: 40-85％ Package Weight: 236g / 8.32ounces Package Size: 90 * 82 * 60mm / 3.54 * 3.23 * 2.36in Package list: 1 * DC Relay Package List: 1 * DC Relay