BWD R3108 Brake Control Relay

( Brand: Bwd ), ( Part Type: Control Brake ), ( Manufacturer Part Number: R3108 )

Review BWD Electronic Brake Control Relay

The BWD R3108 Brake Control Relay is an essential component in the braking system of various heavy-duty vehicles, including buses, trucks, and trailers. This relay plays a critical role in ensuring the safe and efficient operation of the vehicle's brakes.

The BWD R3108 Brake Control Relay is a solid-state device, which means it uses electronic switches instead of mechanical contacts to make and break electrical circuits. This design provides several benefits over traditional relays, including faster switching times, longer lifespan, and improved reliability.

The relay features three normally open (NO) and two normally closed (NC) contacts. These contacts are used to control the operation of various brake functions, such as the trailer brakes, parking brake, and emergency brake. The NO contacts are rated for a maximum current of 25A, while the NC contacts can handle up to 30A.

The BWD R3108 Brake Control Relay is designed to operate in harsh environments commonly found in heavy-duty applications. It has a temperature range of -40 C to 85 C (-40 F to 185 F), making it suitable for use in freezing and hot climates. The relay is also protected against overvoltage, undervoltage, and short circuits, ensuring reliable operation even in demanding conditions.

The relay is designed to be easily installed and integrated into various vehicle electrical systems. It measures 100mm x 65mm x 35mm (3.93 inches x 2.56 inches x 1.38 inches) and has a screw terminal block for easy wiring. The terminal block is labeled for easy identification of each contact, making installation a straightforward process.

In summary, the BWD R3108 Brake Control Relay is a robust and reliable component that plays a critical role in the safe and efficient operation of heavy-duty vehicles. Its solid-state design provides faster switching times, longer lifespan, and improved reliability compared to traditional relays. The relay's three NO and two NC contacts can be used to control various brake functions, and it is designed to operate in harsh environments commonly found in heavy-duty applications.

Buying a BWD R3108 brake control relay can be a useful investment for those who own trailers or other vehicles with electric brakes. Here are some pros and cons to help you make an informed decision:

1. Improved safety: A faulty brake control relay can cause the electric brakes to malfunction, which can be dangerous. Replacing the old relay with a new one can help ensure the safety of the vehicle and its occupants.

2. Smoother braking: A new relay can provide more consistent and reliable braking performance, reducing the risk of skidding or sliding during stops.

3. Easy installation: The BWD R3108 brake control relay is a direct replacement for the original part, making the installation process straightforward and hassle-free.

4. Cost-effective: Compared to the cost of repairing or replacing the entire brake system, buying a new brake control relay is a more cost-effective solution.

1. Initial investment: While the cost of a new relay is relatively low, some people might prefer to hold off on the purchase until the old relay fails completely.

2. Potential for false alarms: In some cases, a new relay might trigger false brake light warnings, which can be annoying and require further diagnosis.

3. Limited compatibility: The BWD R3108 brake control relay is designed specifically for certain types of trailers and vehicles. Before making a purchase, it's essential to ensure that it's compatible with your specific setup.

The BWD R3108 brake control relay is a worthwhile investment for those who own trailers or other vehicles with electric brakes. It can help ensure safety, provide smoother braking performance, and offer a cost-effective solution compared to more extensive repairs. However, it's essential to consider the potential for false alarms and ensure compatibility with your specific setup before making a purchase.

If you're experiencing issues with your electric brake system, it's a good idea to consider replacing the brake control relay as a potential solution. The BWD R3108 brake control relay is a reliable and cost-effective option that can help improve the performance and safety of your vehicle. Before making a purchase, be sure to double-check compatibility and consider the potential for false alarms.

part # r3108 prices

• $8.46-$16.89

specifications wiringwench:

• brand: Bwd
• part type: Control Brake
• manufacturer part number: R3108

shipping wiringwench:

• transit: 4-10 Days
• cost: $0.00
• service: USPS Ground Advantage
• class: Standard
• carrier: USPS
• type: Fixed

returns wiringwench:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

offer wiringwench:

• quantity: 1
• started: August 15, 2025
• availability: In Stock
• options: Ship-to-home
• sold: 0

payments wiringwench:

• credit card: Diners-club
• other
• wallet: Paypal

seller wiringwench:

• rating: 99.3%
• # reviews: 240456

general wiringwench:

• Car Truck Parts Accessories > Starters, Alternators, ECUs Wiring > Other Starters, Alternators, ECUs Wiring
• condition: New other see details

Bwd R3108 Is Similar To:

• Bwd S692 Borg Warner Starter Relay - Sr-115 C1742a Echsr17 Dr1080 1s5031 Cr624 (23.7% similar) $17.99–$49.99. (December 26th, 2024)
• Bwd R3265 Computer Control / Fuel Pump Main Relay # Rz-0088 (46.5% similar) $19.99–$52.35. (May 18th, 2025)
• Bwd R387 Hvac Blower Motor Relay (50% similar) $12.99–$38.95. (May 28th, 2025)
• Bwd R4826 A/c Clutch Relay - Ry-438 35928 1r1674 C1707c 36126 19283 (31.8% similar) $12.59–$23.17. (September 18th, 2025)
• Kemparts Ar171 Relay Crosses To Bwd R675 Free Shipping (19.1% similar) $13.89. (December 7th, 2025)
• Bwd R3091 Multi Purpose Cruise Control A/c Cutoff Relay 4443901 (54.4% similar) $11.95. (December 24th, 2025)