Product Description Blue Sea Systems 7700 ML‑Series Remote Battery Switch – 500A with Manual Control The Blue Sea Systems 7700 ML‑Series Remote Battery Switch is a robust, high‑amperage solution for remote or manual control of battery banks in marine, RV, and off‑grid vehicle systems. It features a magnetic‑latching solenoid rated for 500 A continuous duty and includes a manual override knob for secure “LOCK‑OFF” functionality during maintenance. Features High‑Amp Magnetic‑Latching Switch: 500 A continuous, 700 A intermittent, and up to 1450 A cranking capacity for 30 sec — ideal for large battery and inverter systems Manual Override Knob: Provides ON/OFF control even without power and allows locking the switch OFF during service No Stand‑by Draw: Magnetic latch consumes zero current in steady ON or OFF states; draws <7 A only during state change Remote Control Contura Switch Included: Operate battery banks conveniently from the helm or cabin Marine‑Grade Build: 3/8″‑16 tin‑plated copper studs, silver‑alloy contacts, IP66 waterproof, ignition‑protected for harsh environments Extended Durability: Rated for 100,000 mechanical cycles and supports multiple remote stations Specifications Nominal Voltage: 12 V DC (also available in 24 V as model 7702) Control Coil Voltage: 9–16 V DC; bi‑stable latch design Continuous Rating: 500 A; Intermittent: 700 A (5 min); Cranking: 1450 A for 30 sec Cable Capacity: Supports dual 4/0 AWG via two 3/8″‑16, 7/8″ studs; stud torque 140 in‑lb Operating Temp: –10 °C to 60 °C; weight approx. 0.9 kg (2.05 lb) Applications Large battery bank systems on yachts, workboats, and commercial vessels RV and off‑grid solar/inverter systems requiring remote battery switching Secure isolation for battery service via LOCK‑OFF manual control Multi‑station control setups using optional ML link bus and networked ACR units The Blue Sea 7700 delivers high‑performance, versatile battery bank control with remote convenience, manual backup, and marine‑grade reliability—perfect for those demanding power-heavy installations.
