4-Position Rotary Cam Selector Knob | 3 Speed 16A Industrial
4-Position Rotary Cam Selector Knob | 3 Speed 16A Industrial
4-Position Rotary Cam Selector Knob – 3 Speed Industrial Control Switch
Take precise command of your industrial control panel, HVAC system, or workshop equipment with this heavy-duty 4-Position 3-Speed Rotary Cam Selector Knob. Rated at 16A 120VAC / 12A 250VAC, it delivers rock-solid multi-circuit switching in demanding environments. Made in Mainland China.
Key Features
- Stepped 3-Speed Selector: Features 5 independent terminals and a precise 30-degree stepped rotation for accurate current control and reliable multi-circuit on/off switching — ideal for DIY projects and motor speed selection.
- Sturdy 4-Position Design: Provides continuous, stable output with a strong load capacity. The overload-resistant mechanism and low-arc, low-heat switching reduce wear and enhance electrical safety — suitable for stoves, heaters, and industrial loads.
- Smooth Firm Detent Rotation: The 30-degree fixed detent ensures jam-free switching with firm positive detents and smooth action. The anti-loosening design keeps your settings steady — great for fan speed selectors and machine controls.
- Flame-Retardant Dustproof Enclosure: Built with a dustproof housing, wear-resistant actuation, and high-conductivity alloy contacts for long-life performance. Arc resistance makes it safe for power distribution and motor circuits.
- Versatile Compatibility: Engineered for motor speed control with wide compatibility across HVAC systems, automation equipment, industrial electrical controls, and machine tool control panels for intuitive speed switching.
Technical Specifications
| Product Name | 4-Position 3-Speed Selector Knob |
| Rotation Angle | 30 degrees per step |
| Material | Alloy / Copper |
| Terminal Electrical Life | 10,000 operations |
| Contact Resistance | < 30 mΩ |
| Insulation Resistance | 100 MΩ |
| Withstand Voltage | 1500 VAC |
| Stopping Strength | 6 KG |
| Rated Voltage & Current | 16A 120VAC / 12A 250VAC |
What's in the Box
- 1 × 4-Position 3-Speed Rotary Cam Selector Knob
Ideal Applications
This rotary cam selector knob is purpose-built for industrial control panels, HVAC units, motor speed controllers, automation systems, test equipment, workshop tools, stoves, and heaters. Its robust alloy construction and dustproof housing make it a dependable choice for both professional electricians and serious DIY enthusiasts.
Looking for more tools and hardware essentials? Browse our Air Compressor Pressure Gauge 0-10/0-12/0-25 Bar | DIY Tool or explore the Electromagnetic Induction Tester – Coil & Circuit Fault Detector to complete your workshop or control panel setup.
Note: Due to lighting and display settings, slight color variations may occur. Minor dimensional differences may result from manual measurement.
Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What is the rated current and voltage for this 4-position rotary cam selector knob?
A: This rotary cam selector knob is rated at 16A at 120VAC and 12A at 250VAC, making it suitable for a wide range of industrial control panels, HVAC systems, and motor speed control applications.
Q: How many terminals does this 3-speed selector knob have?
A: The knob features 5 independent terminals, allowing precise multi-circuit on/off control across three speed positions with a 30-degree stepped rotation angle per detent.
Q: Is this selector knob suitable for outdoor or dusty workshop environments?
A: Yes. The knob is housed in a flame-retardant, dustproof enclosure with wear-resistant actuation and high-conductivity alloy contacts, making it well-suited for workshops, industrial settings, and environments where dust or debris may be present.
Q: What is the electrical service life of this rotary cam knob?
A: The terminal electrical life is rated for 10,000 switching operations, and the knob is designed with an anti-loosening mechanism to maintain reliable, consistent performance over its lifespan.