Hydraulic Trailer Brake Actuator


  • 2 year warranty from date of purchase
  • Sealed, extruded, anodized aluminum housing (not cast or plastic)
  • Dimensions: 11.8” L x 3” W x 7.3” H
  • Trailer mounted
  • 12 V DC operation
  • Solid state electronics
  • Uses DOT 3 or DOT 4 brake fluid
  • Easy to install, (4) 12ga wires
    • Black - constant power
    • Blue - brake controller
    • White - ground
    • Yellow - Break-Away
  • Available in 1000,1200, and 1600 psi for any trailer configuration with 1-3 axles
  • Meets all DOT regulations
  • Complies with CFR-393 braking requirements

The Hydrastar electric over hydraulic (EOH) trailer brake actuator gives you the reliability and confidence you expect and need from your trailer braking system. With Hydrastar you get the fastest response time for shorter stopping distance, so in emergency situations and in your day to day towing, you can control those precious fractions of a second that matter when it comes to stopping your trailer.

Industry leading Hydrastar actuators are easy to install and meet all DOT and federal braking requirements - unlike surge brakes, which are illegal in many states. Hydrastar has improved the stopping performance for trailers hauling boats, RV/towables, horses, cars, construction and farm equipment, and many other loads.

Product Model Price  
Hydrastar, 1000 psi HBA-10
Hydrastar, 1200 psi HBA-12
Hydrastar, 1600 psi HBA-16

The Hydrastar Difference

Made in the USA
3 Models (1000 psi, 1200 psi, 1600 psi)
Compatible with factory installed brake controllers
Easy to Install. Replace surge or electric brakes for disc or drum brakes
100% testing of every Hydrastar
Lowest Amp Draw, only 1 Break-Away battery required
Industry leading 2 year warranty
Smallest design on market, only 3” wide - easier to integrate on trailer.
Sealed, enclosed unit made of anodized aluminum for corrosion resistance and a long life.

Hydrastar Performance Comparison

Response Time Test
Two Axle Trailer*

Response Time Test
Three Axle Trailer*

Current Draw at 1000 psi

* All tests were run with the actuators connected to a two or three axle trailer (respectively) equipped with disc brakes and controlled by a Drawtite II controller.