◆ DW01 series are one general type AC Dial Wheel Speed Controls, the mini-type of for popular used in portable power-tools such as: Rotary Hammer, Jig Saws, Reciprocating Saws,100mm and 125mm Angle Grinders, Polisher Grinders, Electric Routers, Sanders, Die Grinders, etc.
◆ Optional with the function as follows:
→ Full-wave speed control
→ Half-wave speed control
→ On-Off version with Passive linear potentiometer
◆ Optional with the accessor as follows:
→ Knob for adjusting start voltage
→ External Triac version for high currents additional with heat sink
| → Mechanical life endurance | ≥1E5 |
| → Electrical life endurance | ≥5E4 |
| → Max. current at 250V | 8A |
| → Max. current at 125V | 12A |
| → Contact resistance | ≤30m Ohm |
| → Insulation resistance | ≥7M Ohm |
| → Dielectric strength of function | 500V |
| → Dielectric strength of reinforced | 3000V |
| → Ambient temperature | 0℃~55℃ |
| → Flammability | UL 94V-0 |
| → Protection type | IP40 |
◆ The electronics in the switches had to be tested together with the corresponding appliances, so the switches are suitable for appliance of class II.
◆ Input side/Output side:
→ Wire terminal


The DW01 Series AC Dial Wheel Speed Control Switch is a compact and versatile component designed for use in a wide array of portable power tools. As a mini-type speed control switch, the DW01 integrates advanced performance capabilities within a small form factor, enabling precise motor control and operational efficiency in compact equipment.
Crafted for high reliability and durability, the DW01 is compatible with a wide range of AC power tools, such as rotary hammers, jig saws, reciprocating saws, 100mm and 125mm angle grinders, polisher grinders, electric routers, sanders, and die grinders. The switch supports full-wave and half-wave speed control, on-off functionality with a passive linear potentiometer, and is engineered to withstand demanding work environments.
Its integration-ready design features wire terminals for both input and output, facilitating easy installation and secure electrical connections. The switch's UL 94V-0 flammability rating, IP40 protection level, and dual dielectric strength ratings enhance safety in both commercial and industrial settings.
Control Types:
Full-wave speed control
Half-wave speed control
On-Off version with Passive linear potentiometer
Optional Accessories:
Adjustable start voltage knob
External Triac version with heat sink for high-current applications
Performance Ratings:
Mechanical life endurance: ≥100,000 cycles
Electrical life endurance: ≥50,000 cycles
Maximum current at 250V AC: 8A
Maximum current at 125V AC: 12A
Contact resistance: ≤30mΩ
Insulation resistance: ≥7MΩ
Functional dielectric strength: 500V
Reinforced dielectric strength: 3000V
Operating temperature range: 0℃ to 55℃
Flammability rating: UL 94V-0
Protection type: IP40
Input/Output Terminals:
Wire terminal type for simplified connection and enhanced durability
Compliance:
Class II electrical appliances (electronics must be tested with the appliance)
The DW01 Series Switch is purpose-built for applications demanding precision speed control and reliable performance. Below are key scenarios where this switch excels:
Used for drilling and chiseling hard materials like concrete and masonry, rotary hammers benefit from the DW01’s full-wave speed control to modulate performance based on load and material hardness.
Precision cutting in wood, metal, and plastic is improved with adjustable speed options. The DW01 enables smooth, user-controlled blade speed adjustments.
In demolition or rough cutting applications, the DW01 allows variable speed control for better cut control and tool longevity.
These tools demand fine-tuned RPM adjustments for polishing, cutting, or grinding. The DW01 provides consistent and responsive control for safe operation.
For surface finishing tools, gradual speed ramping helps prevent material burns or surface damage, which is easily achieved with the DW01’s passive potentiometer control.
In woodworking, maintaining optimal cutting speeds for different bits and materials is crucial. The DW01 facilitates tailored motor responses with minimal user intervention.
These compact tools benefit from the DW01’s small form factor and reliable output control, ensuring operator precision in intricate grinding tasks.
Q1: What is the difference between full-wave and half-wave speed control in DW01?
A: Full-wave speed control uses the entire AC waveform for more efficient power delivery and smoother motor performance. Half-wave control uses only half the waveform, reducing power output for low-demand applications. DW01 supports both, based on the configuration.
Q2: Can DW01 handle continuous heavy-duty operation?
A: Yes. With a mechanical life of ≥100,000 cycles and electrical endurance of ≥50,000 cycles, the DW01 is ideal for heavy-duty use. Additionally, the optional heat-sinked Triac version supports high-current operations.
Q3: What safety certifications does DW01 meet?
A: It conforms to UL 94V-0 flammability, offers dual dielectric protection (500V functionally, 3000V reinforced), and provides IP40 ingress protection.
Q4: Is DW01 compatible with third-party power tools?
A: Yes, the wire terminal configuration and standard sizing allow integration into many commercially available AC power tools.
Q5: Does the DW01 require any special installation tools or training?
A: No special tools are needed. Its wire terminal setup is compatible with standard installation practices. However, proper installation by a qualified technician is recommended.
Q6: Can I customize features like lock-on or knob types?
A: Yes, optional accessories such as start-voltage knobs and external Triac configurations can be provided depending on customer requirements.
Q7: How does the potentiometer work in the on-off version?
A: The passive linear potentiometer allows users to fine-tune the starting voltage and control ramp-up speeds, which is beneficial in applications requiring smooth acceleration.
The DW01 Series from our Power Tool Switch lineup combines compactness with high performance to meet the rigorous demands of modern AC-powered portable tools. It offers a flexible suite of control and safety features, making it suitable for both industrial and commercial uses. Thanks to its customizable options and universal design, DW01 enables manufacturers to integrate a highly efficient speed control system into their tools with confidence and ease.
We are a factory, we can guarantee our price is first-hand, not expensive and competitive.
if you can not buy our product in your local area, we will ship a sample to you.You will be charged a sample price plus all related shipping costs. Express delivery charge depends on the quantity of the samples.
Depending upon the port of delivery, prices varies.
Generally our MOQ for switches is 10000pcs, and for mini switches is 50000pcs.
Also you can place a Trial orders at first without limit for MOQ.
Yes,we provide OEM service and can customize products according to the drawing.
We strictly control every detail of production, and every product is inspected by our QC team before delivery.
Samples, We will send to you within 3 days after payment received. Production for big quantity needs 7 to 15 days. And it also depends on product and quantity.
If you want to know the exact time. Email us the quantity, we will check the delivery time for you.
We will send the goods to you by sea, by air or by express like DHL, UPS, TNT, FEDEX,CHINA POST.
◆ DW01 series are one general type AC Dial Wheel Speed Controls, the mini-type of for popular used in portable power-tools such as: Rotary Hammer, Jig Saws, Reciprocating Saws,100mm and 125mm Angle Grinders, Polisher Grinders, Electric Routers, Sanders, Die Grinders, etc.
◆ Optional with the function as follows:
→ Full-wave speed control
→ Half-wave speed control
→ On-Off version with Passive linear potentiometer
◆ Optional with the accessor as follows:
→ Knob for adjusting start voltage
→ External Triac version for high currents additional with heat sink
| → Mechanical life endurance | ≥1E5 |
| → Electrical life endurance | ≥5E4 |
| → Max. current at 250V | 8A |
| → Max. current at 125V | 12A |
| → Contact resistance | ≤30m Ohm |
| → Insulation resistance | ≥7M Ohm |
| → Dielectric strength of function | 500V |
| → Dielectric strength of reinforced | 3000V |
| → Ambient temperature | 0℃~55℃ |
| → Flammability | UL 94V-0 |
| → Protection type | IP40 |
◆ The electronics in the switches had to be tested together with the corresponding appliances, so the switches are suitable for appliance of class II.
◆ Input side/Output side:
→ Wire terminal


The DW01 Series AC Dial Wheel Speed Control Switch is a compact and versatile component designed for use in a wide array of portable power tools. As a mini-type speed control switch, the DW01 integrates advanced performance capabilities within a small form factor, enabling precise motor control and operational efficiency in compact equipment.
Crafted for high reliability and durability, the DW01 is compatible with a wide range of AC power tools, such as rotary hammers, jig saws, reciprocating saws, 100mm and 125mm angle grinders, polisher grinders, electric routers, sanders, and die grinders. The switch supports full-wave and half-wave speed control, on-off functionality with a passive linear potentiometer, and is engineered to withstand demanding work environments.
Its integration-ready design features wire terminals for both input and output, facilitating easy installation and secure electrical connections. The switch's UL 94V-0 flammability rating, IP40 protection level, and dual dielectric strength ratings enhance safety in both commercial and industrial settings.
Control Types:
Full-wave speed control
Half-wave speed control
On-Off version with Passive linear potentiometer
Optional Accessories:
Adjustable start voltage knob
External Triac version with heat sink for high-current applications
Performance Ratings:
Mechanical life endurance: ≥100,000 cycles
Electrical life endurance: ≥50,000 cycles
Maximum current at 250V AC: 8A
Maximum current at 125V AC: 12A
Contact resistance: ≤30mΩ
Insulation resistance: ≥7MΩ
Functional dielectric strength: 500V
Reinforced dielectric strength: 3000V
Operating temperature range: 0℃ to 55℃
Flammability rating: UL 94V-0
Protection type: IP40
Input/Output Terminals:
Wire terminal type for simplified connection and enhanced durability
Compliance:
Class II electrical appliances (electronics must be tested with the appliance)
The DW01 Series Switch is purpose-built for applications demanding precision speed control and reliable performance. Below are key scenarios where this switch excels:
Used for drilling and chiseling hard materials like concrete and masonry, rotary hammers benefit from the DW01’s full-wave speed control to modulate performance based on load and material hardness.
Precision cutting in wood, metal, and plastic is improved with adjustable speed options. The DW01 enables smooth, user-controlled blade speed adjustments.
In demolition or rough cutting applications, the DW01 allows variable speed control for better cut control and tool longevity.
These tools demand fine-tuned RPM adjustments for polishing, cutting, or grinding. The DW01 provides consistent and responsive control for safe operation.
For surface finishing tools, gradual speed ramping helps prevent material burns or surface damage, which is easily achieved with the DW01’s passive potentiometer control.
In woodworking, maintaining optimal cutting speeds for different bits and materials is crucial. The DW01 facilitates tailored motor responses with minimal user intervention.
These compact tools benefit from the DW01’s small form factor and reliable output control, ensuring operator precision in intricate grinding tasks.
Q1: What is the difference between full-wave and half-wave speed control in DW01?
A: Full-wave speed control uses the entire AC waveform for more efficient power delivery and smoother motor performance. Half-wave control uses only half the waveform, reducing power output for low-demand applications. DW01 supports both, based on the configuration.
Q2: Can DW01 handle continuous heavy-duty operation?
A: Yes. With a mechanical life of ≥100,000 cycles and electrical endurance of ≥50,000 cycles, the DW01 is ideal for heavy-duty use. Additionally, the optional heat-sinked Triac version supports high-current operations.
Q3: What safety certifications does DW01 meet?
A: It conforms to UL 94V-0 flammability, offers dual dielectric protection (500V functionally, 3000V reinforced), and provides IP40 ingress protection.
Q4: Is DW01 compatible with third-party power tools?
A: Yes, the wire terminal configuration and standard sizing allow integration into many commercially available AC power tools.
Q5: Does the DW01 require any special installation tools or training?
A: No special tools are needed. Its wire terminal setup is compatible with standard installation practices. However, proper installation by a qualified technician is recommended.
Q6: Can I customize features like lock-on or knob types?
A: Yes, optional accessories such as start-voltage knobs and external Triac configurations can be provided depending on customer requirements.
Q7: How does the potentiometer work in the on-off version?
A: The passive linear potentiometer allows users to fine-tune the starting voltage and control ramp-up speeds, which is beneficial in applications requiring smooth acceleration.
The DW01 Series from our Power Tool Switch lineup combines compactness with high performance to meet the rigorous demands of modern AC-powered portable tools. It offers a flexible suite of control and safety features, making it suitable for both industrial and commercial uses. Thanks to its customizable options and universal design, DW01 enables manufacturers to integrate a highly efficient speed control system into their tools with confidence and ease.
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