Blue Sea Systems M Series Automatic Charging Relay 12V/24V DC 65A The Mini Automatic Charging Relay (M-ACR) is designed to manage the charging current from alternators up to 65 Amps found on most outboards and many inboard engines. Start Isolation (SI) protects sensitive electronics by temporarily isolating house loads from the engine circuit during engine cranking, protecting the house circuit from voltage sags and spikes. The compact design allows for three mounting styles: surface, rear, or panel mount. Features: Senses charging on two battery banks Pull off and snap-on insulating cover LED indicates ACR status 1 ?4" x .032" male quick connect terminal for ground 7? 16" (11 mm) stud length to accept multiple cable terminals Waterproof – rated IP67 for temporary immersion Specifications Nominal Voltage 12V DC/24V DC Start Isolation Yes Amperage Operating Current 90mA (Combine) 15mA (Open) Terminal Stud Torque 60 in-lb (6.78 Nm) Continuous Rating 65A Intermittent Rating 115A (5 min) Cable Size to Meet Ratings 6 AWG Maximum Cable Size 1/0 AWG Stud Material Tinned Brass Terminal Stud Size 1/4" - 20 (M6) Relay Contact Position Combine 30 sec 13.6V DC Open 10 sec 12.35V DC Open 30 sec 12.75V DC Open High 16.0V Undervoltage Lockout 9.5V Weight 0.80lb (0.36 kg)