Master Battery Disconnect Switches
Battery disconnect switches can help preserve battery life and prevent theft or tampering. They work by cutting off the connection between your battery and the 12-volt fuses that power the vehicle. Battery disconnect switches prevent constant drain while your vehicle is in storage and can be relatively easy to install.
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Battery Disconnect Switch Options
WirthCo offers both remote car battery disconnect switches and standard battery cutoff switches in single and dual battery options. Our battery disconnect switch options include:
- Battery Doctor® remote battery disconnect switches: feature a toggle switch to manually switch your battery off and on from a remote location. They are rated at 275 amps of continuous, 455 amps intermittent, and 1,250 amps cranking.
- 2-Position Mini Master Single Battery Disconnect: ISO 8846 approved and are designed for use on a singe 12-volt battery. This car battery disconnect switch has a continuous rating of 300 amps and a crank rating of 700 amps and feature a cable knockout plate on all sides.
- 4-Position Mini Master Dual Battery Disconnect Switch: can be used with 1 or 2 batteries and has a continuous rating of 300 amps and a crank rating of 700 amps. This battery cutoff switch is ISO 8846 approved, RoHS compliant, and is suitable for applications up to 48 volts.
- Locking Key-Style Battery Disconnect Switches: help prevent tampering and unauthorized use. This style is panel mounted and is rated for 200 amps continuous and 1,000 amps for 5 seconds. It is RoHS compliant and includes two keys.
- Master Disconnect Switch Without Lockout Plate: features 10mm threaded studs with nuts and delivers 175 amps continuous/1,0000 amp peak.
- 4 Position Master Battery Disconnect Dual Battery Selector Switch: designed for dual battery applications and features 4 positions: both, 1, 2, and off and works for applications ranging from 6-36 volts. It features a rating of 310 amps continuous and 500 amps intermittent.
How to Install a Battery Disconnect Switch
Installing a battery cutoff switch helps slow battery drain and can prevent RV or car theft. They provide an easy way for you to cut off power to the battery either directly or through a remote switch and take very little time to install.
- The first step is to select a battery switch based on the handle load of your battery and any interior lights, appliances or other components. Installing the incorrect switch can cause dangerous electrical problems, so refer to your RV or car manual for guidance.
- Prior to installation, first disconnect the negative (black) cable, and then the positive (red) cable from the battery poles.
- Remove the battery clamp and carefully clean off any buildup or debris on the battery terminals.
- The next step is to carefully unscrew the negative cable terminal using a Philips screwdriver, then wire the battery cutoff switch to the negative battery terminal
- Next, you will need to reconnect the cable terminal and find a secure, inconspicuous area to mount the battery disconnect switch.
- Once you have an area selected, drill a few pilot holes then secure the battery disconnect switch into place with the supplied hardware.
- The final step is to reconnect your battery cables to the battery. Make sure the switch is in the “on” position before attempting to start your vehicle to avoid blowing a fuse.