Blue Sea Systems 7610 120 Amp SI-Series Automatic Charging Relay

• Allows temporary isolation of house loads from engine circuit during engine cranking to protect sensitive electronics
• Automatically combines battery banks during the charging cycle and isolates under discharge
• 12/24 Volt auto ranging voltage input
• Waterproof rated IP67 - temporary immersion for 30 minutes
• Ignition protected - safe for installation aboard gasoline powered boats
• Remote LED output indicates relay state away from ACR
• LED light indicates when batteries are combined
• LED blinks in undervoltage lockout and starting lockout
• Supports high-output alternators up to 120 Amperes
• Included with the ADD A BATTERY Dual Circuit System
• Automatically combines battery banks during the charging cycle and isolates under discharge
• Ignition protected - safe for installation aboard gasoline-powered boats
• Activates from any charging source - alternators, battery chargers, or solar panels
• Hermetically sealed contacts / vaporproof
• Side and bottom knockouts for power cable connections
• Clip-on cover protects and insulates terminal connections
• Tin-plated copper studs for maximum corrosion resistance
• 7/8" (22.22mm) stud length to accept multiple cable terminals
• 1/4" x 0.031" male quick connect terminals for ground and remote LED and starting interrupt

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

The Blue Sea Systems 7610 120 Amp SI-Series Automatic Charging Relay helps manage dual-battery electrical systems in boats and other 12- or 24-volt applications. It automatically combines battery banks when a charging source is available and isolates them during discharge, helping protect starting power while supporting reliable charging from alternators, battery chargers, or solar panels.

Designed for marine electrical installations, this automatic charging relay includes ignition protection for use aboard gasoline-powered boats and an IP67 waterproof rating for temporary immersion. The relay can temporarily isolate house loads from the engine circuit during engine cranking, helping protect sensitive electronics. Its LED indicator shows when the batteries are combined, while the remote LED output allows relay status to be monitored from another location. Undervoltage and starting lockout conditions are indicated by a flashing LED.

Key Features:

• Automatic battery management: Combines battery banks during charging and isolates them under discharge.
• 12/24-volt auto-ranging input: Supports electrical systems across both voltage ranges.
• 120-amp capacity: Supports high-output alternators up to 120 amperes.
• Marine-ready construction: IP67 waterproof rating, ignition protection, hermetically sealed contacts, and vaporproof design.
• Clear status monitoring: Built-in LED indicates when batteries are combined, with remote LED output and lockout alerts.
• Installation-focused design: Tin-plated copper studs, cable knockouts, a clip-on terminal cover, and quick-connect terminals simplify protected electrical connections.

Product Details:

• Brand: Blue Sea Systems
• Part number: 7610
• Product type: SI-Series automatic charging relay
• Voltage input: 12/24 volts, auto-ranging
• Maximum supported alternator output: 120 amperes
• Waterproof rating: IP67; temporary immersion for 30 minutes
• Terminal material: Tin-plated copper studs
• Stud length: 7/8 inch
• Quick-connect terminals: 1/4 inch by 0.031 inch male terminals for ground, remote LED, and starting interrupt
• System compatibility: Included with the ADD A BATTERY Dual Circuit System

California Proposition 65 Warning

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Choose the Blue Sea Systems 7610 for automatic, monitored battery-bank control in demanding marine charging applications.

SEO META DESCRIPTION: Blue Sea Systems 7610 120 Amp automatic charging relay combines and isolates dual battery banks for 12/24V marine charging systems.