Description
The Subsea M10 Rotary On/Off Switch provides a robust and intuitive latching control solution for underwater applications. With a positive two-position rotary mechanism, it allows operators to manually toggle power or signal pathways inside a sealed enclosure, eliminating the need to open housings for access. Each position is clearly defined with an audible click and tactile stop, ensuring reliable feedback even while submerged.
This switch is depth-rated to 1,000 meters and is available in both 316 stainless steel and black anodized aluminum for flexibility across corrosion-sensitive or weight-conscious projects. It operates up to 0.5A at 24VDC or 0.2A at 48VDC, making it suitable for low-power switching tasks. For higher-power circuits, the switch can be safely paired with external control modules such as the MOS Low-Side Switch Board to handle heavier loads and inductive devices.
Designed with subsea reliability in mind, the switch features a non-continuous wrench socket with a protective circular step to reduce installation-related surface damage. For tight mounting conditions, the head includes a semi-circular groove that can be rotated using snap ring pliers, avoiding the need for custom tools. Secure fastening is recommended using anti-slip washers and Loctite threadlocker, taking care to prevent contamination of the gasket interface.
For projects with tighter space constraints, a smaller format alternative is available as the Subsea M8 Rotary On/Off Switch, offered exclusively in aluminum anodized construction. Both models offer long service life and are ideal for underwater vehicles, control pods, lighting systems, and instrumentation panels.
Pair with High-Current MOSFET Control Board
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For switching high-power devices like lights or thrusters, these rotary switches can directly trigger the Blu-Sub Low-Side Switch Board, available in 15 A, 30 A, and 120 A versions.
MOS Low-Side Switch Board
A compact MOSFET-based control module for the negative (low) side of a DC circuit. Accepts logic-level input from any Blu-Sub rotary on/off switch. Choose from 15 A, 30 A, or 120 A versions depending on your system’s current requirements. Includes onboard fuse protection and optional shell.
Need a More Compact Option?
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For space-constrained builds or smaller enclosures, the M8 version offers the same reliable latching control in a lighter, lower-profile format.
Subsea M8 Rotary On/Off Switch
A compact rotary switch with a threaded M8 body and anodized aluminum construction. Ideal for tight installations or lightweight underwater systems that don’t require a full-size interface.
Compatible Subsea Enclosure Options
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The Subsea M10 Rotary On/Off Switch installs easily into a variety of Blu-Sub subsea enclosures using a standard M10 mounting hole. Each enclosure supports proper sealing and manual operation at depth. Ensure the selected housing provides sufficient bulkhead thickness and internal clearance for the switch body.
Subsea Watertight Enclosure Box
Compact aluminum enclosure rated to 300 m, pre-drilled with twenty M10 ports—ideal for rotary switches, sensors, or signal indicators. No modification required for installation.
Subsea Enclosure Acrylic Tube
Transparent cast acrylic body rated to 250 m, compatible with Blu-Sub aluminum or acrylic end-caps. Choose end-caps with an M10 mounting hole for proper integration and sealing.
Subsea Enclosure Aluminum Tube
Rugged enclosure rated to 1,000 m. Use with matching aluminum or acrylic end-caps featuring an M10 hole to install the rotary switch. Suitable for deep-water control assemblies.
Compatible with: Subsea M10 Coupling Tube
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The Subsea M10 Coupling Tube offers an external mounting option for the rotary switch when direct panel integration is not feasible. It provides internal clearance for wiring and can be sealed with epoxy to maintain waterproof integrity and add strain relief. Ideal for modular ROV and AUV configurations requiring accessible control interfaces.
Compatible Installation Tool
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This product can be installed using the Universal M8/M10 Installation Wrench, a dedicated tool designed for Blu-Sub M8 and M10 bulkhead-style components such as penetrators, switches, sensors, and connector-style hardware.
Its compact dual-end design allows installation in tight or closely spaced layouts, while cable-pass slots allow the wrench to slide over pre-attached cables, enabling installation or servicing without disconnecting wiring.
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Technical Specifications
| Specification | Stainless Steel Rotary On-Off Switch | Aluminum Rotary On-Off Switch | Aluminum Extended Rotary On-Off Switch | Aluminum Extended Heavy-Duty Rotary On-Off Switch |
|---|---|---|---|---|
| Material | 316 Stainless Steel | 6061 Aluminum | 6061 Aluminum | 6061 Aluminum |
| Appearance | Original Stainless Steel Color | Black Anodized | Black Anodized | Black Anodized |
| Weight | 43 g | 20 g | 20.5 g | 25 g |
| O-ring Size | Ø12 × 1.5 | Ø12 × 1.5 | Ø12 × 1.5 | Ø12 × 1.5 |
| O-ring Material | FKM75 Brown Fluorine Rubber | FKM75 Brown Fluorine Rubber | FKM75 Brown Fluorine Rubber | FKM75 Brown Fluorine Rubber |
| Performance Characteristics | |
| Maximum Rated Depth | 1,000 meters / 3,280 ft |
| Design Lifetime | 3 years or 500 cycles to rated depth / 1,500 times of on-off |
| Temperature Rating | -20 ~ 70 °C |
| Rotational Operating Force | 400 ± 150 g |
| Dielectric Strength | 500 VAC (1 min) |
| Insulation Resistance | 100 MΩ min. (500 VDC) |
| Contact Resistance | 100 mΩ max |
| Electrical Performance | 0.5 A 24 VDC; 0.2 A 48 VDC |
| Wire Specification | 24 AWG |
| On State | Clockwise to the limit |
| Off State | Counterclockwise to the limit |
| Wire Colors | Green, Blue |
| Wire Length | ≈200 mm |
Mounting Hole Dimensions
| Recommended Size | Rotary On-Off Switch |
|---|---|
| Recommended Bulkhead Through Hole Size (A) | Ø10.1 ± 0.1 |
| Hatch Cover Thickness (B) | 13 mm |
| Surface Range (C) | 20 mm |
After using the switch in murky waters for a while, I sense some resistance while rotating. Is this normal?
Yes, this is normal. Impurities or salt crystals might have entered small crevices. You can alleviate this by soaking the switch in warm water and rotating it several times to dislodge any impurities.
Can this switch handle high-current power sources?
No, you should employ MOS switches or relays to manage high voltage and high current power sources.
Will the knob come off during intense vibrations?
No, the knob is equipped with a locking pin mechanism to ensure secure positioning.
Can you provide an electrical schematic for the switch?
No, it's a physical on-off switch, so it can be simply referred to as a switch.
Can this switch be used in shallow water or in the air?
Yes, it is suitable for usage in water depths ranging from 0 to 1,000 meters, as well as in the air.
Will forcefully twisting the knob cause damage?
No, it won't, but avoid rotating the knob at excessively high speeds as it can lead to excessive wear or damage.
3D Model Viewer
Note: The 3D model shown above is for reference purposes only. It may include components, accessories, or alternate sizes not included with the product. For simplicity, only a single representative size is typically displayed when multiple versions exist. Please refer to the product Shipping Guide for detailed information on included contents and size-specific differences.
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