The Raymarine ACU-400 is a heavy-duty Actuator Control Unit engineered for Raymarine Evolution autopilot systems on larger vessels. It delivers power directly to high-capacity Type 2 and Type 3 hydraulic pumps, mechanical linear drives, and solenoid steering systems, operating across both 12V and 24V DC networks. Functioning as the main drive interface, it links drive units and rudder reference sensors directly to the SeaTalkng / NMEA 2000 network to communicate with the EV-1 sensor core and pilot control heads.
In the box
- ACU unit
- Rudder angle reference sensor / transducer (supplied with specific system packs only)
- Cable ties
- Mounting screws
- Documentation


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