Blue Sea Systems 7610BSS SI Series 120A Automatic Charging Relay 12/24V

The Blue Sea Systems 7610BSS is a heavy-duty automatic charging relay designed for marine and RV dual battery systems. This intelligent solenoid automatically connects batteries when the engine is running to charge both house and starter batteries, then isolates them when the engine is off to prevent discharge.

Key Features:

• Rated for 120 amps continuous duty, 210 amps intermittent operation
• Dual voltage compatible: operates on both 12V and 24V DC systems
• Heavy-duty 3/8 inch-16 threaded studs accept up to 1/0 AWG cable
• Voltage-sensitive automatic operation - no manual switching required
• Sealed construction protects internal components from moisture and corrosion
• SI Series reliability for commercial and recreational applications

Ideal for boats, RVs, and commercial vehicles requiring automatic battery management between starting and auxiliary batteries. The relay engages when charging voltage is detected and disengages when voltage drops, ensuring your starting battery remains charged while protecting house batteries from drain.