The CB66-10 AC Motor Soft Start Controller Board is designed to reduce motor startup impact and improve equipment reliability.
Supporting AC230V input voltage and 300W power applications, CB66-10 provides smooth motor startup by limiting initial current shock and reducing mechanical stress on motor components.
It is suitable for electric tools, small motor equipment, and OEM products requiring reliable soft start control.
Gradually ramps up motor power at startup — eliminates jarring impact and extends motor and mechanical life.
Built-in safeguards protect the motor from overload and overheating, extending operational lifespan.
Ultra-compact enclosure fits into the tightest tool housings without compromising thermal performance.
Board dimensions, dial and wiring from the catalog drawing.

Official application range of the speed control board series.
Official engineering drawing from the catalog — click to enlarge.

Strip 5mm from wire end for terminal connection.
CB66-10 is built in our ISO 9001:2015 plant with UL- and TÜV-certified in-house laboratories, and every unit passes four quality gates before it ships.
Incoming quality control — materials and components are inspected on arrival.
In-process quality control — automated assembly lines are checked at every station.
Final quality control — every unit is tested before shipment.
Outgoing quality control — packed batches are re-checked before dispatch.
Our engineering team can tailor a speed control PCB to your exact specifications. Get in touch for samples and pricing.
Contact UsWhat is the CB66-10?
The CB66-10 AC Motor Soft Start Controller Board is designed to reduce motor startup impact and improve equipment reliability.
What are the key specifications of the CB66-10?
Model: CB66-10; Rated voltage: AC 230V; Rated power: 300W; Function: Soft Start · AC Motor Protection · Compact Housing.
What should be checked before using the CB66-10 as a replacement?
Before using this product as a replacement, verify that rated voltage (AC 230V), rated power (300W) match your target part. Also check the mounting and terminal layout. Contact DKLD with the ratings of the part you are replacing and we will confirm suitability.
Can this product range be customized for OEM projects?
Yes. Electrical parameters, connectors and packaging can be customized for OEM/ODM projects.
How can I verify DKLD certifications?
UL certification and TÜV certification are verifiable in the official databases.
Where are DKLD products manufactured?
All products are manufactured at our Yueqing facility with in-house quality control.