Features: - Helps extend battery life - Suitable for universal 12V applications - Prevents primary battery discharge - Constructed from water-resistant black phenolic plastic - Primary function is on/off switching - Can be used as a standalone switch or connected to a control system (controller sold separately) - Ideal for dual battery setups when used with a compatible controller Specifications: - Product series: Auto relay - Contact load: High power - Contact switching current: 500A - Contact switching voltage: 7.8VDC - Contact form: Changeover (1 Form C) - Rated current: 500A - Protection type: Sealed - Coil power: 12V DC - Weight: 235g Contact Data: - Contact material: AgSnO₂ - Contact form: 1H (1A) - Contact ratings: 500A - Contact resistance: 100mΩ max at 6VDC, 1A - Maximum switching current: 500A - Maximum switching voltage: 14VDC - Maximum switching power: 500A - Electrical life expectancy: 100,000 operations (at 30 operations/minute) - Mechanical life expectancy: 10,000,000 operations Coil Specifications: - Nominal voltage (VDC): 12 - Coil resistance (Ω): 168 - Maximum operate voltage (VDC): 14 - Minimum release voltage (VDC): 9 - Maximum applicable voltage (VDC): 14.4 Characteristics: - Operating temperature range: -30°C to +80°C - Vibration resistance: 10–55Hz, 1.5mm - Shock resistance: 50g (operating), 100g (non-operating) - Humidity range: 40–85% RH - Insulation resistance: 100MΩ min at 500VDC - Dielectric strength: - Between open contacts: 2000VAC for 1 minute - Between contacts and coil: 1500VAC for 1 minute - Operate time: 50ms - Release time: 50ms Package Includes: 1 x Heavy current relay