Blue Sea Systems 7620BSS ML-Series 12V Automatic Charging Relay 500A

The Blue Sea Systems 7620BSS ML-Series Automatic Charging Relay (ACR) is a high-capacity, intelligent battery management solution designed for marine, RV, and dual-battery applications. This magnetic latching solenoid automatically combines battery banks during charging and isolates them when charging sources are inactive, ensuring optimal battery performance and preventing discharge.

Key Features:

• 500-amp magnetic latching solenoid for reliable, high-current switching
• 12-volt DC operation with automatic charge detection
• 120-amp continuous duty rating with 210-amp intermittent capacity
• Silver alloy contacts for superior conductivity and corrosion resistance
• 3/8-inch-16 threaded studs for secure cable connections
• Tinned wire control circuit connections resist corrosion in marine environments
• Compatible with Contura switch for manual override control
• 20 AWG control wire connections for easy installation
• Magnetic latching design reduces power consumption and heat generation

The ML-Series ACR eliminates the need for battery isolators and their associated voltage drops, allowing alternators and charging sources to operate at peak efficiency. The intelligent charging logic automatically combines batteries when charging voltage is detected and separates them when the engine stops, protecting your starting battery from auxiliary loads. Ideal for boats, RVs, emergency vehicles, and any application requiring intelligent dual-battery management.