Raymarine ACU-100 Actuator Control Unit

Unlock Precise Steering Control with the Raymarine ACU-100

Imagine gliding through choppy waters with confidence, your boat holding a steady course while you focus on the horizon. The Raymarine ACU-100 Actuator Control Unit makes this a reality for smaller vessels equipped with hydraulic rams or Type 1 mechanical drives. As the core power hub for Raymarine's Evolution autopilot systems, it delivers reliable drive output up to 7 amps continuously, ensuring smooth, responsive performance without the bulk or complexity of heavier-duty units.

Designed for boaters who prioritize simplicity and efficiency, the ACU-100 pairs seamlessly with the EV-1 sensor core and control heads like the P70 or P70R. It even integrates effortlessly with C or E Series multifunction displays (MFDs), turning your helm into a smart navigation center. Whether you're out for a day sail or tackling coastal cruises, this compact unit keeps your autopilot humming reliably.

Engineered for Real-World Marine Demands

Built to withstand the harshest marine environments, the ACU-100 thrives in temperatures from -20°C to +55°C (-4°F to +131°F) and handles up to 93% relative humidity. Its drive electronics boast an IPX6 waterproof rating, shrugging off sprays and splashes, while the connector panel offers IPX2 protection for everyday reliability.

• Compact Footprint: Measures just 180mm x 140mm x 52mm (7.1" x 5.5" x 2.0") and weighs only 0.6kg (1.32lbs), fitting easily into tight console spaces.
• Power Efficiency: Runs on 12V nominal (10.8V-15.6V range) with a standby draw of 300mA, sipping power when you're not actively steering.
• SeaTalk^ng Integration: LEN of 1 for straightforward network connectivity, powering data flow without supplying voltage to the bus.

Connections are plug-and-play simple: rudder reference sensor, power, drive motor, and ground. No clutch output means it's tailored for setups that don't need it, keeping wiring clean and maintenance low.

Why ACU-100 Stands Out for Smaller Boats

For vessels under 10 meters (33 feet) with lighter steering loads, the ACU-100 strikes the perfect balance. Unlike higher-output models like the ACU-200 (15A) or ACU-400 (30A) suited for larger rams or powerboats, this unit avoids overkill—saving space, weight, and power. It's ideal when paired with a compatible drive unit, delivering precise torque without strain.

Boaters often rave about its nine-axis EV sensor compatibility, which uses advanced gyro, accelerometers, and magnetometers for heading accuracy far superior to older fluxgate systems. The result? Rock-solid course holding even in confused seas, reducing crew fatigue on long passages.

Effortless Setup and Long-Term Reliability

Installation boils down to secure mounting in a dry, ventilated spot, then connecting to your SeaTalk^ng backbone. Pro tip: Calibrate your rudder reference post-install for optimal responsiveness—most users notice tighter tracking immediately. Over time, its rugged construction means fewer service calls; just inspect connections annually for corrosion in saltwater environments.

For troubleshooting, monitor voltage stability—dips below 10.8V can affect performance. Pairing it with Raymarine's intuitive apps lets you fine-tune settings from your tablet, adapting to your boat's unique handling.

Real Boater Insights: Performance That Delivers

"Switched to the ACU-100 on my 28-foot sailboat—night-and-day difference in autopilot steadiness. No more constant adjustments in 15-knot winds." – Coastal cruiser feedback.

From weekend warriors to liveaboards, the consensus is clear: this unit punches above its size, offering pro-grade autonomy without the premium heft.