Auto Charging Relay 12V, 140 AMP

The automatic charging relay (ACR) automatically manages battery charging to ensure maximum efficiency and protect your batteries.

Features:

• Automatic battery management connects batteries during charging and isolates them when the voltage drops


• Start Isolation (SI) protects sensitive electronics during engine cranking by temporarily disconnecting house loads (indicated by a slow-flashing yellow LED)


• High-output support compatible with alternators up to 120A


• Dual-color LEDs provide real-time battery status: Fault, Charging, Discharging, Combine, SI, and Override modes


• Under Voltage Lockout prevents the relay from closing when battery voltage is too low (9.5V for 12V systems, 19V for 24V systems)


• Durable design IP67 waterproof, ignition protected, safe for marine and RV applications

Specifications:

• Continuous Rating: 120 Amps


• Intermittent Rating: 140 Amps


• Max Voltage: 48VDC


• Cable Size: 4/0 AWG

Applications:

• Boats dual battery systems (starter + house)


• Sailboats navigation and lighting batteries


• Fishing boats trolling motor and accessory battery protection