Hydrastar Marine

XTRA Duty 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
  • Vented end plate
  • EPDM Gaskets
  • Stainless steel hardware
  • 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. Hydrastar has taken the electric over hydraulic trailer brake actuator to the next level with the Marine/XTRA Duty line. Hydrastar saw the need for an actuator that would withstand the added rigors of fresh and salt water environment, as well as the harshness of extreme temperatures and the thousands of miles of traveled roads.

The already rugged and reliable Hydrastar added several feature that allows the actuator to stand up to harsher environments and still perform at peak levels. Like the standard Hydrastar, the Marine/XTRA Duty unit is a sealed, extruded anodized aluminum unit. This allows the actuator to be less susceptible to corrosion and protects the internal components from the environmental elements. Other features added to the Marine XTRA Duty actuator are marine grade gaskets that seal the housing unit, stainless steel hardware, and a vented end plate. The vented end plate allows the release of both moisture, pressure, and temperature from inside the housing unit, thus further protecting the internal components.

The Hydrastar Marine/XTRA Duty actuator is the perfect fit for boat trailers, trailers utilized in the colds of the north or the desert heats of the southwest, and trailers that prefer to place their EOH actuators in enclosed areas where air flow is hampered.

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

The Hydrastar Difference

Made in the USA
Water tight extruded aluminum enclosure protects unit from all weather conditions
Marine grade gaskets seal unit
Stainless steel hardware and venter end plate
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.

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.