About this product

The Blue Sea Systems ML-RBS is a magnetic latching remote battery switch for high-amperage DC battery circuits, with manual control at the switch and remote operation from a helm, electrical panel, or other protected control location. Across the range, it carries a 500A continuous rating, a 700A intermittent rating for 5 minutes, and uses a bi-stable coil that draws no operating current while the switch is staying ON or OFF.

This switch is built for battery isolation and load switching on larger marine electrical systems where long battery cable runs are better kept short. It can switch high current under load, includes a manual override knob with a LOCKED OFF service position, and uses 3/8"-16 tin-plated copper terminal studs with 7/8" stud length for large cable terminals.

Auto Releasing ML-Series Remote Battery Switch with SPST Switching Provides 500A switching and features of current ML Remote Battery Switches, but can be controlled with SPST or SPDT switch for applications where a normally open relay is desired

The ML-RBS suits installations on cruising boats, fishing boats, workboats, and other vessels that need battery switching from a more convenient location without giving up direct manual control at the battery switch. Voltage and control connection options vary by configuration, so the selected variant should match the vessel control circuit and wiring method.

Key Features

• 500A continuous rating for main battery switching on high-current DC systems.
• Bi-stable magnetic latching coil draws 0 mA while holding its ON or OFF state, which helps reduce unnecessary battery drain.
• Manual override knob allows local operation with or without control power and includes a LOCKED OFF position for service work.
• Remote control capability supports battery switching from the helm, electrical panel, or another convenient onboard location.
• 3/8"-16 tin-plated copper studs with 7/8" length accept large cable lugs and support multiple cable terminals where the installation allows.
• Silver alloy contacts support switching live loads, with a live current switching rating of 300A at 12V DC.
• Label recesses help identify the connected battery bank or circuit in a crowded DC distribution area.
• Designed to meet ratings with 2x 4/0 cable and #10 mounting hardware.
• Operating temperature range of -10°C to 60°C supports protected engine room and electrical compartment installations.