CB90 230V AC Motor Speed Controller | Soft Start & Over Current Protection PCB

WHY THIS BOARD

Why choose CB90

The CB90 AC Motor Speed Controller Board is designed for small AC motor applications requiring adjustable speed control and enhanced motor protection.

Supporting AC230V input voltage and 50-200W power range, CB90 integrates speed control, soft start, and over current protection functions to provide smoother startup, flexible speed adjustment, and improved equipment reliability.

It is suitable for compact electric tools, small motor equipment, and OEM electrical products.

AC speed regulation

Continuous motor speed control from the rotary dial — adjust cutting and sanding speed to the material.

Soft start

Gradually ramps up motor power at startup — eliminates jarring impact and extends motor and mechanical life.

Over-current protection

Automatically cuts power when current exceeds safe limits — prevents motor burnout and electrical hazards.

SPECIFICATIONS

CB90

Specification	Value
Model	CB90
Standard	—
Rated voltage	AC 230V
Rated current	—
Rated power	50~200W
Function	AC Speed Regulation · Soft Start · Over-Current Protection

PRODUCT VIEW

CB90 at a Glance

Board dimensions, dial and wiring from the catalog drawing.

BOARD

CB90 AC speed control board with soft start, over-current protection — 50~200W.

WIRING

Red, black and white leads for speed control and motor connection — wired to AC 230V.

USE

Fits AC-powered power tools with soft start requirement — wire between the trigger switch and the motor to reduce startup current.

APPLICATIONS

For AC-powered power tools

Official application range of the speed control board series.

01

AC-powered jigsaws

02

Circular saws

03

Reciprocating saws

04

Small bench drills

05

Table saws

06

Other handheld electric tools

TECHNICAL DRAWING

CB90 Dimensions & Wiring

Official engineering drawing from the catalog — click to enlarge.

PCB: 36.5 × 62 mm  ·  Thickness: 1.5 mm  ·  Height: 21.4 mm  ·  Mounting: 4-Φ3.5

Wiring: Black (16AWG) — Live input | Red (16AWG) — Live output | White (20AWG) — Neutral common | Blue (20AWG) — Neutral input

QUALITY & CERTIFICATIONS

Approved for global markets, checked at four gates

CB90 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.

TÜVcULusCEISO 9001:2015

IQC

Incoming quality control — materials and components are inspected on arrival.

IPQC

In-process quality control — automated assembly lines are checked at every station.

FQC

Final quality control — every unit is tested before shipment.

OQC

Outgoing quality control — packed batches are re-checked before dispatch.

Need a Custom Motor Control Solution?

Our engineering team can tailor a speed control PCB to your exact specifications. Get in touch for samples and pricing.

Contact Us

Frequently Asked Questions

What is the CB90?

The CB90 AC Motor Speed Controller Board is designed for small AC motor applications requiring adjustable speed control and enhanced motor protection.

What are the key specifications of the CB90?

Model: CB90; Rated voltage: AC 230V; Rated power: 50~200W; Function: AC Speed Regulation · Soft Start · Over-Current Protection.

What should be checked before using the CB90 as a replacement?

Before using this product as a replacement, verify that rated voltage (AC 230V), rated power (50~200W) 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.