
Connection Mode: Experience seamless integration with our advanced connection mode, designed to deliver unparalleled connectivity and reliability for all your commercial needs.
Motor model | Power supply | Number of phases | Number of poles | Output power | Current | Reference speed |
Model | Vot | Phase | Poles | Output | Current | Speed |
139BLDC-250W | AC220V | 3 | 10 | 250W | 1.05A | 1000rpm |
139BLDC-500W | AC220V | 3 | 10 | 500W | 2.1A | 1000rpm |
139BLDC-750W | AC220V | 3 | 10 | 750W | 3.3A | 950rpm |
Type | L | B | C | D | E | F | G | DD | d | H |
139BLDC-250W | 134 | 35 | 86 | 16.5 | 12 | M8 | 39 | 190 | 12 | 10.5 |
139BLDC-500W | 149 | |||||||||
139BLDC-750W | 159 |
Number | Colour | specification |
1 | RED | AC220V (L) |
2 | BLK | AC220V (N) |
3 | YEL/GRN | PE |
Number | Colour | specification |
1 | BLU | +5V |
2 | GRN | RS485 A |
3 | WHT | RS485 B |
4 | YEL | GND |
Number | Colour | specification |
1 | BLU | +10V |
2 | WHT | VSP |
3 | YEL | GND |

Application Areas: This versatile motor is ideal for powering a variety of applications, including air source heat pumps, axial flow fans, fresh air systems, and both household and commercial air conditioners.
Power Supply: Designed to operate seamlessly with an AC220V/50Hz power supply, this motor features 10 poles and a robust output power range of 100-750W, catering to diverse needs.
Engineered for whisper-quiet operation, our motor incorporates premium low-noise ball bearings from renowned brands like NSK and TPI.
Featuring a roll plate structure, this motor offers adjustable installation sizes, ensuring compatibility with various environments. It boasts a motor protection level of IP54 for enhanced durability.
Utilizing advanced Hall-free FOC control technology, the motor guarantees low noise and vibration, along with superior efficiency and reliability.
The controller offers versatile speed control interfaces: a (0 ~ 10V analog input) and b (RS485 communication interface), making it adaptable for different applications.
With its unique, integrated motor controller design, installation is a breeze-simply plug-and-play for immediate operation.
Experience seamless stepless speed regulation with constant torque, speed, and air volume, ensuring optimal performance for all your commercial applications.






Changzhou Joinbrain Motor Co., Ltd. Nestled in the heart of China's renowned motor manufacturing hub, the Wujin Economic Development Zone in Changzhou, our esteemed company enjoys a strategic location. We proudly operate within a sprawling production facility exceeding 8,000 square meters, where we excel in pioneering the development and precise manufacturing of motors crafted for a wide spectrum of applications, including state-of-the-art central air conditioning fans, innovative air energy systems, highly efficient water pumps, the latest evaporative air coolers, powerful livestock ventilation systems, advanced permanent magnet brushless motors, high-efficiency cooling towers, and dependable air compressor fans. We proudly showcase an astounding annual production capacity that exceeds one million units. Furthermore, our bespoke motor design services are tailored to meet the specific needs and exacting demands of our esteemed clientele.
Recognized as a National High-Tech Enterprise and a Changzhou Science and Technology Enterprise, our distinguished product line is further certified by CCC and CE standards, reflecting our steadfast dedication to unparalleled quality and reliability.
Our team is comprised of highly skilled specialists, possessing deep expertise in motor and control technologies, fostering continual innovation and maintaining technical superiority. Equipped with cutting-edge production and testing facilities, we leverage advanced processing techniques and adhere to stringent quality control standards to ensure our products are consistently reliable and deliver outstanding performance.
Our mission is built on the core values of integrity and a relentless quest for quality. By continuously enhancing our product standards and refining our operations, we have established a robust quality management system that rigorously conforms to ISO9001:2015 standards, ensuring exceptional service and product excellence throughout every phase-pre-sale, production, and post-sale.
Quality Policy:
With an unwavering dedication to continuous improvement, we are committed to delivering products that consistently surpass customer expectations.
Guided by our foundational principles of "Innovation and Integrity," we remain steadfast in our commitment to crafting superior quality products and fostering authentic, collaborative partnerships that fuel mutual growth and success across a broad range of industries.


Q1: Are you factory?
A: Yes, we have been in designing and providing excellent motors for customers. Our factory production is all under ISO9001 quality management system.
Q2: How long you could prepare samples?
A: Normally 3 days if we have the sample in hand. If customized one, about a week around
Q3: How about batch order production?
A: Normally 15-30 days, the customized or newly developed products may take more half month.
Q4: Do you inspect the finished products?
A: Yes, we do inspection according to ISO9001 standard and ruled by our experienced QC staff.
Q5: What advantage do you have?
A: For the motors, we have long enough of 24months guarantee, and for the service, we offer 24 hours technical support and barrier-free communication.
Q6: How do you do after-sale service?
A: We will send you free spare parts to replace under warranty.
Q7: what's the delivery time?
A: It depends on the order quantity. Normally delivery time will be within 15 days after receiving payment by TT.
Q8: What is your terms of payment ?
A: Payment≤5000USD, 100% in advance. Payment≥5000USD, 30% T/T in advance , balance before shipment.