This 500 amp smart battery isolator relay is built for heavy-duty dual battery systems. It automatically manages power between the start and auxiliary batteries using a voltage-sensing solenoid to prioritize charging and protect the start battery. Ideal for use in trucks, RVs, marine systems, and service vehicles where auxiliary loads need to be isolated without manual intervention.

Specifications & Features

• System Voltage: 916V DC
• Turn-On Voltage: >13.2V
• Turn-Off Voltage: <12.7V
• Turn-On Delay: 5 seconds
• Turn-Off Delay: 10 seconds
• Maximum Continuous Current: 500 Amps
• Standby Current Draw: <5mA
• Protects start battery by disconnecting auxiliary loads at low voltage
• Automatically reconnects auxiliary battery once charging voltage is restored
• Perfect for high-current systems in fleet, off-road, and marine applications