CB75 120V AC Motor Speed Controller | 50-800W Variable Speed PCB

WHY THIS BOARD

Why choose CB75

The CB75 AC Motor Speed Controller Board is designed for reliable speed regulation of AC motor applications.

Supporting AC120V 60Hz power systems and 50-800W motor applications, CB75 provides smooth and adjustable speed control for electric tools, motor equipment, and OEM products.

With a compact PCB structure and stable control performance, CB75 helps manufacturers develop flexible variable-speed equipment for the North American market.

AC speed regulation

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

120 V / 60 Hz compatible

Designed for 120 V / 60 Hz AC power systems — ideal for the North American market.

SPECIFICATIONS

CB75

Specification	Value
Model	CB75
Standard	—
Rated voltage	AC 120V/60Hz
Rated current	—
Rated power	50~800W
Function	AC Speed Regulation · 120V/60Hz Compatible

PRODUCT VIEW

CB75 at a Glance

Board dimensions, dial and wiring from the catalog drawing.

BOARD

CB75 AC speed control board — 50~800W.

WIRING

Wiring for AC 120V/60Hz North American standard — red, black and white leads.

USE

Fits AC-powered power tools — 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

CB75 Dimensions & Wiring

Official engineering drawing from the catalog — click to enlarge.

PCB: 71 × 30 mm  ·  Thickness: 1.5 mm  ·  Height: 29.5 mm

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

Strip 5mm from wire end for terminal connection.

QUALITY & CERTIFICATIONS

Approved for global markets, checked at four gates

CB75 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 CB75?

The CB75 AC Motor Speed Controller Board is designed for reliable speed regulation of AC motor applications.

What are the key specifications of the CB75?

Model: CB75; Rated voltage: AC 120V/60Hz; Rated power: 50~800W; Function: AC Speed Regulation · 120V/60Hz Compatible.

What should be checked before using the CB75 as a replacement?

Before using this product as a replacement, verify that rated voltage (AC 120V/60Hz), rated power (50~800W) 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.