The Blue Sea BS 7601 M-ACR Automatic Charging Relay essentially performs the function of a battery isolator, but is fully automatic and voltage-controlled.
When the alternator (generator) is running and the starter battery has reached a sufficient charging voltage, the relay closes automatically, and the charging current from the alternator also flows to the house battery.
The Start Isolation (SI) of the Blue Sea BS 7601 M-ACR Automatic Charging Relay protects sensitive electronics from overloads from the engine circuit by temporarily isolating them during engine starting. It also protects the main circuit from voltage drops.
The compact size of the Blue Sea BS 7601 M-ACR Automatic Charging Relay allows for three mounting options: surface mount, rear mount, or panel mount.
KEY FEATURES:
Charging of two battery banks
LED indicates ACR status
Stud length: 11mm / multiple cable connections
Waterproof - IP67 rated for temporary submersion
TECHNICAL DETAILS:
Nominal Voltage: 12V DC/24V DC
Engine Start: Relay disconnects batteries to protect sensitive electronics from voltage drops.
Current Draw: 90mA (combined)
15mA (open)
Continuous Charging Current: 65A
Peak Charging Current: 115A
Recommended Cable Thickness: 6 AWG
Maximum Cable Thickness: 1/0 AWG (50mm)
Battery Terminal Torque Limit: 6.78 Nm