Controller only. Select a compatible proportional hydraulic valve separately. Required supply voltage is 12.7–18 VDC.
The Brand Hydraulics EC-12-01 electronic control box provides a single PWM output for adjusting a compatible proportional valve. Its single-turn knob adjusts solenoid current, allowing the operator to vary the hydraulic function through the matched valve rather than relying on a simple on/off signal.
A separate power switch lets the operator switch the controller off without moving the adjustment knob. This preserves the dial setting for the next use, although the resulting hydraulic flow still depends on the selected valve and system conditions. This enclosed control box is the EC-12-01 configuration; the dash-mounted EC-12-02 is a different product.
Keep the flow setting at hand
The large adjustment knob supports straightforward manual control, while the aluminum enclosure and sealed controls protect the electronics in suitable indoor or outdoor installations. Foot brackets provide mounting points so the box can be positioned where the operator can reach the knob and power switch.
| Feature |
Benefit |
| Single-turn adjustment |
Vary the proportional valve command with one control knob. |
| Separate power switch |
Switch power off without changing the selected knob position. |
| PWM output |
Provides the pulsed current drive required by compatible proportional solenoids. |
| Sealed aluminum enclosure |
Protects the enclosed electronics at the switch, knob, fuse holder, cable entry, and lid. |
| External fuse holder |
Allows fuse access without opening the enclosure. |
Technical specifications
| Specification |
Detail |
| Manufacturer part number |
EC-12-01 |
| Controller type |
Enclosed, single-output proportional PWM control |
| Nominal system voltage |
12 VDC |
| Required supply range |
12.7–18 VDC |
| Continuous output current |
1.0 A maximum |
| PWM frequency |
100 Hz ±10 Hz |
| Adjustment |
Single turn |
| Operating temperature |
−40°F to 176°F (−40°C to 80°C) |
| Enclosure |
Aluminum with mounting feet |
| Standard lead length |
18 inches |
Match the valve and electrical installation
The controller is intended for Brand EFC-Series valves and other proportional valves with suitable electrical specifications. It does not set the hydraulic system’s maximum pressure or flow capacity. Select the valve size, coil, hydraulic circuit, and protective devices for the actual equipment duty.
| Component |
Selection guidance |
| Controller |
EC-12-01 enclosed control box with adjustment knob and separate power switch. |
| Proportional valve |
Separate selection; verify coil current, PWM frequency, and voltage compatibility. |
| Electrical connection |
Confirm the supplied lead termination against the existing wiring before installation. |
| Optional indicator |
The LED-equipped EC-12-01L is a separate model; do not assume an LED is included. |
| Power supply |
Use a suitable DC supply within 12.7–18 VDC; this is not a direct 120 VAC controller. |
Before ordering
For replacement work, compare the complete model number and wire connections on the existing box. A controller with the same nominal voltage may have a different output limit or connector configuration, so voltage alone is insufficient to establish interchangeability.
| Check |
Requirement |
| Valve coil |
Confirm the valve is designed for the controller’s current and PWM output. |
| Supply voltage |
Verify actual operating voltage stays within the specified input range. |
| Mounting and wiring |
Allow knob access, protect the leads, and match the lead termination and wiring diagram. |
| Protection |
Use the specified fuse and follow the manufacturer’s wiring instructions. |
| Safe installation |
Disconnect electrical power and safely isolate hydraulic equipment before wiring or service. |
Need help confirming the correct assembly? Contact UnitedBuilt through online chat, email parts@unitedbuilt.com, or call 602-253-7750 with your valve model, supply voltage, and existing controller number.
