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
| 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) |
Check out the links below for more information
Wiring Diagram
Instructions
Dimension Drawing

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
- Provides high amperage switching under load, either manually or remotely.
- Offers added safety with control, even without power, and a LOCKED OFF capability for servicing.
- Indicates switch state remotely (requires optional LED).
- Features 3/8″-16 tin-plated copper studs for maximum conductivity, corrosion resistance, and 7/8″ stud length for multiple cable terminals.
- Silver alloy contacts for high reliability in live load switching and mechanical endurance of 100,000 cycles.