Wabco 4801020840 Trailer Modulator Multivoltage

Description

The Wabco 4801020840 Ebs Trailer Modulator Multivoltage is a crucial component in trailer air brake systems, designed to regulate braking force and ensure optimal stopping performance. It’s typically used in heavy-duty trailers and commercial vehicles. This modulator operates at 12/24V and features a robust design with an IP 6K9K protection class, making it highly resistant to dust and water ingress. Its TEBS E with PEM version meets OE specifications, ensuring compatibility and reliability. The device measures 200 x 198 x 283 mm and boasts a variety of port connections including M22 x 1.5 JED-152, M16 x 1.5 JED-152 and integrated silencers. Operating within a temperature range of -40°C to +65°C and a max operating pressure of 8.5 bar, this modulator delivers consistent performance in challenging conditions.

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 4801020840) comes with a 1-year warranty.