Manufacturer | Curt Manufacturing |
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Brand | CURT |
Model | Discovery |
Item Weight | 9.6 ounces |
Product Dimensions | 8 x 2 x 5 inches |
Item model number | 51120 |
Is Discontinued By Manufacturer | No |
Exterior | Painted |
Manufacturer Part Number | 51120 |
OEM Part Number | 51120 |
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CURT 51120 Discovery Electric Trailer Brake Controller, Time-Delay , black
Brand | CURT |
Item Dimensions LxWxH | 8 x 2 x 5 inches |
Item Weight | 9.6 ounces |
Style | Single |
About this item
- RELIABLE SAFETY. The Discovery electric trailer brake controller offers safe, dependable operation, increasing trailer brake pressure as you depress the vehicle brake pedal and bringing the vehicle and trailer to a smooth stop
- EASY TO USE. This trailer brake controller features an easy-to-read, digital display to monitor brake operation. It also has a simple, reliable design with no internal moving parts and no leveling required
- POWERFUL. The simple controls of the Discovery brake controller enable powerful brake operation, featuring a manual brake slider button, an adjustable power toggle and adjustable ramp time
- VERSATILE. You can use this electric trailer brake controller on virtually any trailer with 1 to 4 axles (2 to 8 brakes). Compatible with low-volt, PWM, ABS, cruise control and electric over hydraulic
- SIMPLE SETUP. This electric brake controller quickly plugs into your vehicle using a CURT vehicle-specific quick plug harness (sold separately). It comes with an adjustable mounting bracket and can be mounted at any angle
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From the manufacturer
Wherever your work or play takes you
CURT offers custom trailer hitches, electrical products and a complete line of towing accessories to get you there with confidence and enjoy every mile of the journey.
CURT Electrical Trailer Brake Controllers
Simple installation. Sophisticated safety.
CURT offers several different trailer brake controller models to provide you with a solution that fits your unique towing setup and budget. We carry time-based and inertia-based or proportional brake controllers.
All CURT trailer brake controllers are designed for easy installation. Most use our quick plug harnesses, and each comes with its own set of features and benefits.
For a helpful guide in selecting a brake controller, see below.
Key features
- Multiple styles to fit your needs and budget
- Fast, easy installation
- Easily calibrated for all towing needs
- Time-based and proportional
Echo Mobile | Spectrum | TriFlex | Discovery | Venturer | |
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Customer Reviews |
4.3 out of 5 stars
2,465
|
4.3 out of 5 stars
644
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4.2 out of 5 stars
838
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4.6 out of 5 stars
1,008
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4.3 out of 5 stars
3,411
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Activation Method | Tri-axis inertia | Tri-axis inertia | Tri-axis inertia | Time-based | Time-based |
Number of Brakes | 2 to 4 | 2 to 8 | 2 to 8 | 2 to 8 | 2 to 6 |
Display | Smartphone app | Tri-color LEDs | Digital | Digital | LEDs |
Level Adjust | Auto | Auto | Auto | Auto | Auto |
Inertia-based vs. time-based
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Two types of brake controllers:CURT electric brake controllers fall into one of two categories: inertia-based or time-based. These refer to the method of activation used by the brake controller. Both types are safe and effective for stopping a trailer. However, depending on your needs, one may be preferred over the other. |
Inertia-basedInertia-based or proportional trailer brake controllers use an electronic mechanism, called an accelerometer, to detect the momentum of the vehicle-trailer combination while braking. The controller accentuates the trailer brakes in proportion to the momentum, allowing for a smooth, highly efficient stop. |
Time-basedTime-based activation is less complex than inertia-based. When stopping, a time-based brake controller accentuates the trailer brakes based on whatever gain setting is input by the driver. Although simple in operation, time-based trailer brake controllers are effective and provide a more budget-friendly option. |
How to select a trailer brake controller
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Heavy-duty towingIf you are towing a heavy trailer or cargo, an inertia-based brake controller will provide superior control to make smoother stops and to put less strain on your vehicle. |
Light-duty towingIf you’re towing a simple boat trailer or popup camper, a time-based trailer brake controller may be sufficient. CURT time-based controllers are easily adjustable for varying loads. |
Frequent towingIf you’re planning to tow often, an inertia-based brake controller is recommended. The sophisticated operation will help prolong the life of your vehicle and trailer. |
Occasional towingIf you only plan to tow a few times a year, such as for family camping trips during the summer, a time-based brake controller is an effective and budget-conscious option. |
Product Description
It takes a lot of power to stop a moving trailer, especially when that trailer is hauling a heavy load. On RVs, flatbeds, livestock trailers and many other oversize haulers, manufacturers typically install trailer brakes to assist the tow vehicle in bringing such a massive amount of weight to a halt. But it takes more than a good set of brakes to make quick, efficient stops. It takes precision and the right amount of control. Discovery is a time-based brake controller, meaning it applies increasing brake pressure the longer your foot is on the brake pedal. This pressure is based on the gain setting and sensitivity adjustment set by the user. Discovery has a digital display for easy monitoring and the ability to manage up to four axles at a time. It mounts at any angle, anywhere in your vehicle and comes with an automatic power level adjustment feature to ensure you can stay better focused on your driving and spend less time worry about your trailer brakes. All CURT brake controls are designed to work with quick plugs so that they can readily plug into your vehicle's original equipment socket. They also include a mounting bracket and hardware for easy installation. A brake controller should be mounted somewhere on the dash of your vehicle, and we recommend putting it below the steering wheel, either on the right or left side of the steering column. This way the control will not block your view when driving, but it will remain accessible and visible when adjustment is needed.
Product information
Technical Details
Additional Information
ASIN | B0033WNLO4 |
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Customer Reviews |
4.6 out of 5 stars |
Best Sellers Rank | #264,749 in Automotive (See Top 100 in Automotive) #169 in Trailer Brake Controls |
Date First Available | January 12, 2010 |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance and ease of installation of the brake controller. For example, they mention it works great, the mounting hardware is easy to install, and the instructions are clear. That said, opinions are mixed on the quality and value.
AI-generated from the text of customer reviews
Customers like the performance of the electronic sensor. For example, they say it works great on their triple axle trailer, it's easy to install, and has a good price.
"Very easy to install. Works well. Descent price." Read more
"Got this for my Ram 1500 to tow our trailer and it works great! Definitely a must buy" Read more
"...Simple and does the job." Read more
"showed up quick with all parts, works flawlessly.would buy again" Read more
Customers find the installation process of the electronic sensor to be easy. They mention that the mounting hardware is easy to install, and the instructions on how to install and program the sensor are easy to follow. Some say that the sensor is plug and play and works flawlessly.
"Very easy to install. Works well. Descent price." Read more
"Works great easy to install" Read more
"...It took me about 5 minutes to adjust it after the install. Simple and does the job." Read more
"showed up quick with all parts, works flawlessly.would buy again" Read more
Customers find the adjustability of the electronic sensor to be easy. They mention that it's easy to set timing and level, and adjusts to different trailers and weights. Customers also say that it adjusts well for different brake pressures. They also say it'll calibrate easily.
"...Small size made it easy to mount in an out of the way spot. Easy adjustment; easy to use. Really like this unit." Read more
"...Easy to set timing and level." Read more
"...Easy to follow instructions and setup. Easy to use and adjust as needed for different trailers and weights." Read more
"...Controller is easy to adjust with digital display and delay switch on the side. Great value for the money of you need a brake controller!" Read more
Customers are mixed about the quality of the brake controller. Some mention it's a great product, while others say it was cheaply made and the case is flimsy.
"Great brake controller, this is my second one, the first one shorted out after 8 years. Make sure you get the correct wiring harness for your vehicle" Read more
"Build very well.My truck died at the same time I bought this, I had to buy another truck, it already had this on it." Read more
"...the product did arrive damaged, the second digit on the screen does not light up properly and is unreadable, not a major problem since i adjust the..." Read more
"Pretty good brake controller. For me I had to hold the brake and the brake slide on the unit to set the sensitivity otherwise it wouldn't work." Read more
Customers are mixed about the value of the electronic sensor. Some mention it's great value for the money, works great, and is a good choice for a value brake controller. However, others say that it'd be better off with a different brake controller or that it is cheap and a basic unit.
"Good choice for a value brake controller. Added this to our 2013 Town and Country mini van so we can pull our pop up camper...." Read more
"...Great value for the money of you need a brake controller!" Read more
"...Inexpensive but it has the two main aspects of a brake controller gain adjustment and how hard you want the brakes to be...." Read more
"...But this curt 51120 works great for the price." Read more
Customers are dissatisfied with the mounting of the electronic sensor. For example, they mention it came without the mounting bracket or screws. Some say the mount was outside the package and just taped together. That said, some complain about the tap screw and bushings.
"...Only gave it three stars because the mounting screws were missing. It took me longer to find screws than it did to mount it." Read more
"...Included was the mounting bracket and all hardware. I did have to purchase the vehicle specific wiring harness." Read more
"Came without the mounting bracket or screws... otherwise it would have been great for what we need...." Read more
"Install was easy and product works fine but it came without the hardware to bolt the unit to the bracket...." Read more
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Reviewed in Canada on January 24, 2024