Wabco 4801020800 Trailer Modulator Multivoltage

Description

The Wabco 4801020800 Ebs-Trailer Modulator Multivoltage is a critical component within a trailer's air brake system, specifically functioning as an air processing unit. It is designed for use in trailers equipped with air brakes, modulating the air pressure to ensure optimal and safe braking performance. This multi-voltage device, operating at 12/24V, is built to OE specification and offers reliable air modulation. The unit measures 289 x 304 x 405 mm and features a robust design with a protection class of IP 6K9K, ensuring durability in harsh operating conditions. It incorporates multiple port threads including M22 x 1.5 JED-152, M16 x 1.5 JED - 152, and integrated silencers, contributing to efficient and quiet operation across a temperature range of -40°C to +65°C.

Key Features & Benefits

This thing basically takes the signal from your truck’s brake pedal and translates it into a signal that controls the air brakes on your trailer. It manages the airflow to the trailer brakes, telling them when and how hard to apply. The "multivoltage" part just means it's designed to work with different electrical systems you might have in your truck – usually 12 or 24 volt. It also often includes a manual trailer supply line control – a way to manually charge the spring brakes on the trailer, if needed. Some have built – in diagnostics too, like a low – air pressure warning. Think of it as the middleman between your truck’s braking system and your trailer’s air brakes. Your truck tells it “I’m pressing the brake pedal,” and this modulator then relays that information – turned into air pressure – to the trailer. It ensures your trailer brakes work in sync with your truck, which is super important for safe towing. It’s part of the larger air processing unit, handling the air that actually activates those trailer brakes.

Symptoms, Risks & Replacements

Honestly, it's a critical safety component. Without a functioning modulator, your trailer brakes might not apply correctly, or at all. You’ll notice if it’s going bad because your trailer might feel like it’s pushing you around, or it might take longer to stop. It acts like a shield, preventing runaway trailer situations. If you’re hauling a heavy load, a faulty modulator is a real hazard. We carry a good selection of these, including this multivoltage version, over at Fixparts Online if you want to take a look. Getting a reliable one is worth it for peace of mind, and to keep everything stopping when it should.

Warranty Information

Wabco Trailer Modulator Multivoltage (MPN 4801020800) comes with a 1-year warranty.