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Side Power ERV170 Retract DC Thruster - 48V - 374lbs of thrust
The ERV170 is a highly efficient, compact, lightweight retract thruster suitable for boats between 50-70 feet. The integrated inverter for variable speed control makes for a quick and easy installation.
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Side Power ERV170 eVision Retract Bow/Stern Thruster - 48V - 374 lbs of thrust

The Side Power ERV170 is a compact, lightweight retract thruster built for boats in the 50-70 foot range. Unlike a fixed tunnel thruster, the ERV170's drive leg retracts fully into the hull when not in use, reducing drag and noise while underway, then extends into position for precise low-speed maneuvering. Its 6-phase PMSM synchronous motor was engineered specifically for marine thruster duty.
An integrated variable-speed inverter allows for smooth, precise control, along with Side Power's S-Link control network for a quiet, flexible, and easily expandable thruster system.
Part Number: ERV170/250TC-4V
Specifications
| Voltage | 48V |
| Thrust @ 42VDC | 374 lbs (170kg) |
| Tunnel Diameter (ID) | 250 mm (9.83") |
| Recommended Boat Size | 50-70 ft (15-21m) |
Key Features
- Retractable drive leg reduces drag and noise when not in use
- PRO™ variable speed control for smooth, quiet, precise maneuvering
- S-Link™ CAN-based control system for simple, scalable installations
- Overheat protection with automatic thermal derating
- Sealed drive lubrication for lifetime gearleg protection
- Galvanic separation to prevent stray current corrosion
