DF450B DC18V 550W Motor Speed Controller | Variable Speed Control PCB

WHY THIS BOARD

Why choose DF450B

The DF450B DC Motor Speed Controller Board is designed for adjustable speed control of DC motor applications.

Supporting DC18V input voltage and 50-550W power range, DF450B provides reliable and flexible speed regulation for battery-powered tools, DC motor equipment, and OEM electrical products.

With compact design and stable control performance, DF450B helps manufacturers develop variable-speed DC motor applications with improved operating flexibility.

DC speed regulation

Precise DC motor speed control — smooth, efficient speed adjustment for DC-powered applications.

Compact design

Space-saving form factor fits easily into tight tool housings without compromising performance.

18 V DC compatible

Designed for 18 V DC lithium-ion battery systems — perfect for cordless power tool applications.

SPECIFICATIONS

DF450B

Specification	Value
Model	DF450B
Standard	—
Rated voltage	CC 18V
Rated current	—
Rated power	50~550W
Function	DC Speed Regulation · Compact Design · 18V DC Compatible

PRODUCT VIEW

DF450B at a Glance

Board dimensions, dial and wiring from the catalog drawing.

BOARD

DF450B DC speed control board with compact design for 18V DC motor loads.

WIRING

DC wiring for DC 18V operation — compact connector for easy installation.

USE

Fits 18V DC power tools — compact board for cordless drill and driver speed control.

APPLICATIONS

For portable air pumps

Ideal applications for this LCD display / controller board.

01

Handheld electric air pumps

02

Tire inflators

03

Portable compressors

04

Bicycle pumps

05

Sports ball pumps

06

Other DC air pump devices

TECHNICAL DRAWING

DF450B Dimensions & Wiring

Official engineering drawing from the catalog — click to enlarge.

PCB: 80.3 × 59 mm  ·  Mounting: 4-Φ3.5

Mounting hole spacing: 7.2 mm.

QUALITY & CERTIFICATIONS

Approved for global markets, checked at four gates

DF450B 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 DF450B?

The DF450B DC Motor Speed Controller Board is designed for adjustable speed control of DC motor applications.

What are the key specifications of the DF450B?

Model: DF450B; Rated voltage: CC 18V; Rated power: 50~550W; Function: DC Speed Regulation · Compact Design · 18V DC Compatible.

What should be checked before using the DF450B as a replacement?

Before using this product as a replacement, verify that rated voltage (CC 18V), rated power (50~550W) 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.