CB72-21C AC230V Motor Control Board 2700W with Soft Start, Brake Stop & Protection

WHY THIS BOARD

Why choose CB72-21C

The CB72-21C AC Motor Control Board is a high-power intelligent motor control solution designed for demanding AC motor applications.

Supporting AC230V voltage and 2700W power capacity, CB72-21C integrates soft start, over current protection, brake stop, and anti runaway protection functions to improve motor safety, startup performance, and stopping control.

It is ideal for professional electric tools, high-power machinery, and OEM equipment requiring advanced motor protection and control.

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.

Stop braking

Active braking brings the motor to a rapid stop when switched off — improves safety and efficiency.

Anti-flyback protection

Prevents dangerous kickback when the motor stops — critical safety feature for operator protection.

High power — up to 2700 W

Handles extreme motor loads up to 2700 W — engineered for the heaviest-duty industrial power tools.

SPECIFICATIONS

CB72-21C

Specification	Value
Model	CB72-21C
Standard	—
Rated voltage	AC 230V
Rated current	—
Rated power	2700W
Function	Soft Start · Over-Current Protection · Stop Braking · Anti-Flyback · High Power (2700W)

PRODUCT VIEW

CB72-21C at a Glance

Board dimensions, dial and wiring from the catalog drawing.

BOARD

CB72-21C AC speed control board with soft start, over-current protection and stop braking — 2700W.

WIRING

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

USE

Fits high-power AC tools such as angle grinders, circular saws and heavy-duty sanders — wire between the trigger switch and the motor.

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

CB72-21C Dimensions & Wiring

Official engineering drawing from the catalog — click to enlarge.

PCB: 65 × 60 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

CB72-21C 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 CB72-21C?

The CB72-21C AC Motor Control Board is a high-power intelligent motor control solution designed for demanding AC motor applications.

What are the key specifications of the CB72-21C?

Model: CB72-21C; Rated voltage: AC 230V; Rated power: 2700W; Function: Soft Start · Over-Current Protection · Stop Braking · Anti-Flyback · High Power (2700W).

What should be checked before using the CB72-21C as a replacement?

Before using this product as a replacement, verify that rated voltage (AC 230V), rated power (2700W) 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.