250V 12A Power Tool Speed Controller Knob Switch – Drill & Grinder
250V 12A Power Tool Speed Controller Knob Switch – Drill & Grinder
250V 12A Power Tool Speed Controller Knob Switch
Take full control of your power tools with this versatile 250V 12A Speed Controller Knob Switch. Designed as a universal in-line speed controller, it works seamlessly with angle grinders, electric hammers, impact drills, polishing machines, and a wide range of other power tools rated up to 1600W. Simple to install and built for everyday workshop use, this knob switch lets you dial in the exact speed you need for clean, precise results on any job.
Made in Mainland China.
Key Features
- Wide Compatibility: Suitable for angle grinders, impact drills, electric hammers, polishing machines, and other power tools up to 1600W
- Rated Specs: 250V / 12A — dependable electrical performance for demanding workshop environments
- Knob-Style Control: Smooth rotary knob allows precise, stepless speed adjustment at your fingertips
- Compact & Lightweight: Measures just 5.1 × 3.5 × 1.4 cm (2" × 1.4" × 0.5") with a cable length of approx. 10.7 cm (4.2") for easy in-line installation
- Durable Plastic Housing: Sturdy construction that holds up to regular workshop use
- Easy Plug-In Install: No complex wiring — simply connect in-line between your power tool and outlet
Specifications
| Material | Plastic |
| Rated Voltage | 250V |
| Rated Current | 12A |
| Max Compatible Power | Up to 1600W |
| Switch Type | Knob (Rotary) |
| Cable Length | Approx. 10.7 cm / 4.2" |
| Dimensions (L×W×H) | 5.1 × 3.5 × 1.4 cm / 2" × 1.4" × 0.5" |
| Country of Origin | Mainland China |
Package Contents
- 1 × Angle Grinder / Power Tool Speed Controller Knob Switch
Notes
- Actual color may vary slightly from images due to monitor brightness and lighting conditions.
- Please allow slight measurement deviation (±1–3 mm) due to manual measurement.
- Ensure your tool's power rating does not exceed 1600W before use.
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Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What power tools is this speed controller knob switch compatible with?
A: This 250V 12A speed controller knob switch is compatible with a wide range of power tools including angle grinders, impact drills, electric hammers, and polishing machines — provided the tool draws no more than 1600W. It functions as a universal in-line speed controller for most standard single-speed AC power tools.
Q: How do I install this power tool speed controller?
A: Installation is straightforward — the switch is designed to be connected in-line between your power tool's cord and the power outlet. No advanced wiring knowledge is required. Simply plug it in between the tool and the wall socket, and use the rotary knob to adjust the running speed as needed.
Q: Is this knob switch safe to use at 250V?
A: Yes. This switch is rated at 250V and 12A, making it suitable for use with standard mains voltage power tools up to 1600W. Always ensure your tool's power consumption stays within the rated limit before connecting the controller.