Collection: Voltage Converters (2)

24V to 12V converters and voltage reducers for trucks, HGVs and commercial vehicles. Run 12V accessories from 24V electrical systems with a converter designed for professional fleet use.

Voltage Converters for Commercial Vehicles

Most HGVs and trucks operate on 24V electrical systems, but many cab accessories, dash cameras, sat nav units and other devices require 12V. A quality voltage converter bridges that gap cleanly. Truckstop stocks converters built for continuous use in commercial vehicle environments, where vibration, temperature swings and sustained load demand more than a consumer-grade solution.

Choosing the Right Voltage Converter

The key specification to match is continuous output current. A dash cam may draw less than 1A, while a set of LED work lights or a refrigerated cab unit could demand 10A or more. Truckstop converters are rated for their actual continuous load, so you can size with confidence. All units are designed for direct installation into a vehicle's fuse board or wiring loom.

What is a 24V to 12V converter used for in a truck?

A 24V to 12V step-down converter allows 12V accessories to be powered safely from a truck's 24V electrical system. Common applications include dash cameras, phone chargers, sat nav units, fans, LED lighting and refrigeration control units. Without a converter, connecting 12V devices directly to a 24V supply will damage the accessory.

What output current do I need for my application?

Match the converter's continuous current rating to the total draw of all devices connected to its output. Add up the amp ratings of each device and choose a converter with a continuous rating at least 20% above that total to allow for start-up surges. Truckstop stocks converters from 5A up to 30A continuous output.

Are these converters suitable for permanent vehicle installation?

Yes. The voltage converters stocked by Truckstop are designed for permanent installation in commercial vehicles. They are built to withstand vibration, heat and the voltage fluctuations typical of a working truck's electrical system, unlike plug-in consumer adapters which are not rated for continuous commercial use.