Subsea M10 Rotary Potentiometer

The Subsea M10 Rotary Potentiometer provides a reliable underwater interface for analog signal adjustment tasks such as speed control, brightness tuning, or variable input in sealed subsea electronics. Designed with a threaded M10×1 bulkhead and rated to 1,000 m depth, it enables precise manual resistance adjustment without compromising enclosure integrity.

The potentiometer features an aluminum housing with a black anodized bulkhead and a red, enlarged rotary knob textured with non-slip grooves for firm grip during dives. It offers a mechanical rotation range of 240° ±10°, with a corresponding electrical travel of 230° ±10°. The knob holds its position without spring return and must be reset manually if needed.

Internally, it supports a 10 kΩ resistance value with ±10% tolerance and a temperature coefficient of ±250 ppm/°C, making it suitable for use in both air and submerged environments. Wire outputs follow a standard configuration—red for the wiper (movable contact), green for CCW (ground), and yellow for CW (voltage supply)—allowing easy integration into microcontroller-based voltage divider circuits for analog input interpretation.

Because this is a finite-travel potentiometer, it should not be rotated beyond its limit range. Over-rotation can lead to permanent internal damage. While mechanical travel is smooth and stable, thread adhesive or anti-loosening spacers are recommended to ensure long-term fastening under operational stress or vibration.

The Subsea M10 Rotary Potentiometer is well-suited for remotely operated vehicles (ROVs), underwater lighting control panels, and embedded control pods requiring manual adjustment with reliable analog output from a compact, sealed interface.