Speed control switch fan — power B, type rotary potentiometer. The complete factory specification follows. Made by Tong Yue Xin Commercial And Trading Co., Ltd. (Chengdu) (11 years on the platform, typical reply ≤10h). For a binding price and lead time, send the volume you need and where it ships to.
Key Features of This Speed Control Switch Fan
- Model Number: WH138
- Power (Watts): B
- Rated Power: 500V
- Max. Operating Voltage: 500V
- Resistive Material: Carbon
- Place Of Origin: China
Technical Specifications
| Brand Name | BONENS |
|---|---|
| Model Number | WH138 |
| Place Of Origin | China |
| Package / Case | other |
| Certificate | ISO9001-2008TUVROHS |
| Built In Switch | Rotary DPDT, Rotary DPDT |
| Type | rotary potentiometer |
| Diameter | 24mm |
| Company Name | sichuan qixing electronic co.ltd |
| Selling Units | Single item |
| Tolerance | ±10%, ±10% |
| Resistance | 500 -1M, ±10% |
| Technology | Carbon Film |
| Adjustment Type | Top |
| Temperature Coefficient | 0.05 |
| Rotation | 300° |
| Resistive Material | Carbon |
| Termination Style | Solder Lug |
| Actuator Type | Knob |
| Bushing Thread | M8 x 0.75 |
| Shaft Size | 0.236" (6.00mm) |
| Number Of Turns | 1 |
| Description | BONENS |
| Actuator Diameter | # |
| Max. Operating Voltage | 500V |
| Resistance Tolerance | ±10% |
| Actuator Length | # |
| Operating Temperature | -10°C~+100°C |
| Termination | Solder Lug |
| Mounting Type | Rotary Potentiometer |
| Cross Reference | other |
| Power (Watts) | B |
| Length | # |
| Packaging | other |
| D/C | other |
| Rated Power | 500V |
| Packaging Details | 1000 units/box |
| Single Package Size | 10X10X5 cm |
| Single Gross Weight | 0.024 kg |
Product Details




















item | value |
Model Number | wh138 |
Type | Rotary Potentiometer |
Place of Origin | China |
Sichuan | |
Brand Name | Bonens |
Technology | Wirewound |
Resistance | B500 OHM ~1M |
Resistance Tolerance | ±5%,±10% |
Rated Power | 0.5W |
Max. Operating Voltage | 100V |
Tolerance | ±10% |
Diameter | 24mm |
Rotation | 300° /-5° |
Resistive Material | Carbon |
Shaft Size | 6mm |
Number of Turns | 1 |


















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Ordering and Pricing
- Minimum order quantity: 1 piece
- Volume pricing:
- 1–999 piece: US $0.25 / piece
- 1000–9999 piece: US $0.24 / piece
- 10000+ piece: US $0.23 / piece
- Ships from: China
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this speed control switch fan?
The standard minimum order quantity is 1 piece. Trial orders can usually be arranged for buyers evaluating the product before a full production run.
Which certifications does this speed control switch fan carry?
It is supplied with ISO9001-2008TUVROHS documentation, which covers the requirements of most import markets. Additional test reports can be issued on request.
Can the speed control switch fan be supplied for my local voltage?
The standard configuration is 500V. Alternative voltage and frequency builds are available when specified at the time of order.
Do you accept OEM or custom branding?
Yes. Custom logo, colour, packaging and specification changes are accepted on qualifying order volumes. Send your artwork and technical requirements with your enquiry.
How long does production and delivery take?
In-stock configurations typically ship within 7–15 days. Customised or large-volume orders are usually produced in 25–35 days, confirmed on order.
About the Manufacturer
This product is produced by Tong Yue Xin Commercial And Trading Co., Ltd. (Chengdu), based in China. The company 11 years as a verified Alibaba.com supplier, Trading Company. Browse the full Tong Yue Xin Commercial And Trading Co., Ltd. (Chengdu) range on HVACR Nexus.
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