Description
BLUE SEA SYSTEMS ML-RBS Remote Battery Switch with Manual Control – 12V DC 500A- 7700. 500 Amp magnetic latching switch provides high amperage switching under load, manually or from remote locations
- Manual override knob provides an added level of safety allowing control with or without power and offering LOCKED OFF capability for servicing
- LED output to remotely indicate switch state – requires optional LED
- 3∕ 8″-16 tin-plated copper studs for maximum conductivity and corrosion resistance
- 7∕ 8″ (22 mm) stud length accepts multiple cable terminals
- Label recesses for circuit identification
- Silver alloy contacts provide high reliability for switching live loads

The ML-ACR (Automatic Charging Relay) and ML-RBS (Remote Battery Switch), when paired, offer complete battery management of large battery banks with the push of a button. In addition to automatically sharing the charge from an engine’s alternator between the start and auxiliary battery, the ML-ACR control switch provides momentary battery combining to assist with starting in the event of a low engine battery. Multiple remote battery switches can be easily connected to the ML-ACR with the optional Paralleling Link Bus for a complete remote battery management Subsystem.
| Specifications | |
|---|---|
| Control Circuit Voltage | 9-16V DC |
Control Circuit Connection ![]() |
Tinned Wire |
| Nominal Voltage | 12V DC |
Manual Control ![]() |
Yes |
Coil Function ![]() |
Bi-Stable |
| Mounting | #10 |
| Amperage Operating Current | 0mA ![]() |
| Amperage Operating Current when changing state | <7A (40 ms) |
| Terminal Stud Torque | 140 in-lb (15.82 Nm) |
Continuous Rating ![]() |
500A |
Intermittent Rating ![]() |
700A (5 min) |
Cranking Rating 30 sec ![]() |
1450A DC |
| Minimum Operating Temperature | -10° C |
| Maximum Operating Temperature | 60° C |
| Cable Size to Meet Ratings | 2x (4/0) |
| Live Current Switching | 300A @ 12V DC ![]() |
| Master Control Switch Capability | No |
| Mechanical Endurance | 100,000 Cycles |
| Terminal Ring Diameter Clearance | 1.18in (29.97 mm) |
| Terminal Stud Length | 0.875in (22.23 mm) |
| Terminal Stud Size | 3/8″ – 16 (M10) |
| Weight | 2.05lb (0.93 kg) |
This is a special order item. Most special order items are shipped within 72 hours of ordering, however, some items are not in stock. We will let you know if the item is not available. Alternatively, you may call us at 1-866-473-0420.









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