Hydrastar HBA-10 Electric-Over-Hydraulic Actuator | 1,000 PSI for Drum Brakes
Upgrade to instant, proportional braking that eliminates surge lag and provides total control when backing up or navigating steep grades.
Overview
The Hydrastar 1,000 PSI actuator is the ultimate performance upgrade for trailers with hydraulic drum brakes. This Electric-Over-Hydraulic (EOH) system triggers the moment you touch your vehicle's brake pedal, delivering smooth, jerk-free stopping power that matches your vehicle's braking intensity without the "push" feeling common in surge systems.
R&P Service Insight
This system is a game-changer for marine trailers where corrosion and steep ramps are constant factors.
- No Lockouts: Back up freely without manual coupler pins.
- Vented Housing: Releases heat and moisture to protect electronics.
- Maintenance: Flush brake fluid annually and check 7-way plugs for corrosion.
R&P Knowledge Hub
Compatibility: Designed specifically for hydraulic drum brakes. Not for use with disc brake systems.
Vehicle / System Fit: Suitable for single or tandem axle trailers with a total rating up to 7,000 lbs.
Installation Notes: Requires an in-cab electric brake controller and a 5-amp-hour breakaway battery kit (sold separately).
Performance Insight: The extruded anodized aluminum housing provides superior salt-water resistance for marine applications.
R&P Repair Insight
Use the following checklist to ensure a successful conversion from surge couplers to EOH:
- Pressure Check: Confirm your trailer has Drum Brakes (requires 1,000 PSI).
- Wiring Prep: Ensure your tow vehicle has a 7-way plug with a dedicated 12V power lead.
- Mounting Space: Unit dimensions are 11-3/4" L x 3" W x 7-3/8" H; verify frame clearance.
Features
Instant Response
Eliminate surge lag; brakes activate immediately upon pressing the vehicle brake pedal.
Effortless Reversing
No manual lockouts or pins required to back up, even on inclines or ramps.
Marine-Grade Build
Anodized aluminum housing and weathertight seals defend against water and grime.
Proportional Control
Electronic valve mirrors vehicle braking intensity for smooth, balanced stops.
Specifications
| Specification | Detail |
|---|---|
| Part Number | HBA-10 |
| Product Type | EOH Actuator |
| Max Pressure | 1,000 PSI |
| Material | Anodized Extruded Aluminum |
| Dimensions | 11.75" x 3" x 7.375" |
| Power Input | 12V DC |
| Port Size | 3/16" Hydraulic Port |
Fitment / Application
| Category | Details |
|---|---|
| Axle Count | Single or Tandem Axle |
| Max Capacity | 7,000 lbs |
| Brake Type | Hydraulic Drum Brakes |
| Notes | Not compatible with Disc Brakes (requires 1,600 PSI). |
Included Components
| Quantity | Item |
|---|---|
| 1 | Hydrastar 1,000 PSI Actuator Unit |
| 1 Set | Frame Mounting Hardware |
| Built-In | Bleeder Screw for Maintenance |
| 4-Wire | Pre-attached Lead Wires (Black, Blue, Yellow, White) |
