This 500 amp heavy-duty battery isolator relay is designed to manage power between dual batteries in automotive, marine, and RV applications. It provides reliable isolation of auxiliary batteries to prevent start battery drain, extending battery life and enabling dedicated power for high-demand accessories like audio systems or inverters.

Specifications & Features

• Amperage: 500A continuous, 600A surge
• Isolator Type: Relay (Solenoid)
• Width: 3-3/8″
• Height: 3″
• Depth: 3-3/4″
• Weatherproof construction ensures long-term durability in harsh environments
• Ideal for isolating auxiliary batteries in boats, RVs, trucks, and off-road systems
• Prevents voltage drop to the secondary battery unlike standard isolators
• Enables full control over which battery powers specific loads
• Helps extend battery lifespan by preventing unnecessary drain on the start battery