Wabco 4410090010 Switch

Description

This Wabco 4410090010 switch is a critical component within air brake systems, specifically functioning as part of relay valves. It's designed for use in heavy-duty vehicles and trailers to regulate air pressure and ensure proper brake operation. This switch is a normally open type with a switching pressure of 5.0±0.2 bar and an operating pressure up to 10.0 bar. It features M22 x 1.5 port threads and operates with a maximum voltage of 30 V. Its dimensions are 43 x 52 x 121 mm. This device is manufactured to OE specification, ensuring reliability and consistent performance, while the wide temperature range of -40°C to +80°C allows for operation in diverse environments.

Key Features & Benefits

This switch basically acts like a gatekeeper for the air pressure that controls your brakes. It receives a signal – a small amount of air pressure from the driver’s foot valve – and then opens a much larger valve, letting a bigger volume of air rush to the brake chambers on your wheels. It’s an electro – pneumatic device, meaning it uses both electricity and air to do its job. It's not directly applying the brakes, it's allowing the air to get to where it needs to go, quickly and reliably. Think of it as a booster. Your foot is telling the system “I want to slow down”, but the switch amplifies that signal, making the brakes respond much faster and with more force than if it was just relying on that initial, small amount of air pressure. It's crucial for all vehicles using air brakes - usually bigger trucks, buses, and trailers, but sometimes even heavy – duty vans. It controls the service brakes – the ones you use normally for stopping.

Symptoms, Risks & Replacements

A failing relay switch will make your brakes sluggish, slow to respond, or even prevent them from applying fully. You’ll notice if it’s going bad because the pedal will feel soft or require a lot more effort to get the same stopping power. It's a safety issue, plain and simple. If it fails completely, you could lose your ability to stop the vehicle effectively. We carry a lot of these, and you can often find a good selection at places like Fixparts Online if you like browsing yourself. They aren't terribly difficult to replace, but they absolutely need to be in good working order to keep you safe on the road.

Warranty Information

Wabco Switch (MPN 4410090010) comes with a 1-year warranty.