POPULACE - 20 Years China Manufacturer of Generator AVR, Controllers, Speed Governors & Spare Parts20YEARS EXPERIENCE FOR GENSET PARTS

We guarantee consistent quality for all our parts to replace the original well, by partnering with hundreds of specialized customers.

• Ongoing development of generator replacement parts
• 1000+ SKU in stock
• Instant quotes for 1-1,000 parts
• Lead times from 1 business day
• OEM or ODM are available

A perfect replacement for multiple original brands, more economical and affordable

Ranking the No.1 Diesel Generator Parts Factory For Generator AVR & Controller Brands in China

We know you have choices, and we value the trust you place in us. Populace is a professional diesel generator parts manufacturer since 2006. We hold ISO, CE, SGS, and other certifications. And if you want to develop any new models, welcome to inquiry us. We can offer the best and fast OEM/ODM service.

Owning our factory, we have over 1000+ SKU in stock, and it makes our delivery time is very fast, within 1-5 days. And we invest a lot in SMT workshop, injection molding workshop, assembly workshop, packaging workshop, and testing machines to boost our capability.

Certified by:

Years experience

Delivery time

1,000

SKU generator parts

Top 6 Must-Have Benefits For You

Generator Parts One Stop Shopping

Over 1000+SKU in stock for your choice, find anything you want.

Warranty Terms

Just provide product video, free compensation

Fast Delivery and LOW MOQ

Large inventory, 1-day delivery, MOQ only 1 pc

Worry-free Quality Control

99.2% product qualification rate, strict management and quality control system(CE, ISO9001, SGS)

Lower Shipping Fee

Tight and tidy packing to reduce 20% carton size, save up to 35% freight cost per container.

Performance Guaranteed

100% quality assurance, 100% refund for defect product(incl. freight and tax).

Product Categories

—— One-Stop Generator Parts Solution ——

Generator AVR

Generator Actuator

Generator Controller

Generator Gauge

Speed Control System

Generator Charger

Water Sensor

Oil Temp Sensor

Rectifier Thyristor

Fuel Shut Off Solenoid

Generator Water Heater

ATS

New Product Trends

Amp Panel Meter Ammeter Generator Pointer AC Ammeter Pointer Current Measuring Instrument 6L2V

Model: 6L2V

Basler AVC63-4 / AVC63-4D Analog Generator Voltage Regulator

Model: AVC63-4

Basler BE350 Analog Generator Voltage Regulator

Model: BE350

Comap Controller Auto Mains Failure AMF Generator Controller AMF20

Model: AMF20

Comap Controller Auto Mains Failure AMF Generator Controller AMF25

Model: AMF25

Comap Controller Auto Mains Failure AMF Generator Controller AMF9

Model: AMF9

Comap Controller Manual Remote Start(MRS) Generator Controller MRS10

Model: MRS10

Comap Controller Manual Remote Start(MRS) Generator Controller MRS11

Model: MRS11

About Us

Populace Electronic Co., Ltd. was founded in 2006 and has since become a trusted provider specializing in the technical development, manufacturing, and sales of generator parts. With a focus on innovation and quality, our product range includes AVRs, controllers, chargers, speed control boards, actuators, solenoid valves, rectifier bridges, and more.

Our factory is based in Xiamen, Fujian, China, covering an area of over 2,000 square meters. Our team includes approximately 70 employees, including 6 senior technicians.

Learn more about POPULACE

How We Became Professional

WORKSHOP

Our Workshop is dust free. All products are making in high standard

TESTING

We Test all the products before sending out the factory, including materials and finished products.

PRODUCT LINE

We have 5 product lines to make products more than 50000pcs per month.

TESTING EQUIPMENT

For assuring high quality of products, we have many professional equipment to test the products

Certificate

The Professional Exhibitions We Attend

Middle East Energy Dubai

7-9 April 2019

Electric&Power Indonesia

11-14 Sept,2019

Enertec Expo 2023 Vietnam

24-26th April,2023

Canton Fair

15-19th April and 15-19th Oct, two times for each year.

Main Markets

Mid East

Southeast Asia

Domestic Market

South America

North America

F.A.Q

Yes, our factory is located in Xiamen, Fujian. Sincerely welcome you to visit us in China.

Yes, we are very glad to offer samples for your testing.

Normally 1 years warranty. If it is our quality problem, we will replace the new one or repair it for you.

Yes, we will check the quality 100% before we send out the goods.

If goods in stock, it needs 2-3 days after payment. If big quality and not in stock, it will needs about 3-7 days to make.

T/T, Western Union, Paypal, Alibaba order link, Money Gram, RMB directly. Cash.

Sea, Air or Express(FedEx, DHL, UPS, TNT, Aramex Etc.)

Populace Insights

Deep Sea DSE4520 Replacement & Upgrade Guide: Auto Mains Failure (AMF) Controller Retrofit

November 6, 2026

Upgrading and replacing diesel generator control units requires precise matching of control topology (Auto Start vs. Auto Mains Failure), panel cutout dimensions, AC sensing range, and terminal pin assignments. This technical guide details retrofit procedures for Deep Sea DSE4520 AMF controllers, comparing verified specifications with the DSE4510 and compact DSE3110, mapping terminal conversions from obsolete models (DSE4110, DSE4120, DSE704, DSE720, DSE5110), explaining AMF dual-source interlocking, and outlining commissioning protocols.

Leroy Somer AVR Replacement Guide: R450, R438, R448 & R120 Voltage Regulators

November 3, 2026

Selecting and replacing Automatic Voltage Regulators for Leroy Somer alternators requires matching excitation topology (Shunt, AREP auxiliary windings, or PMG), sensing voltage range, and overload capability. This guide details drop-in replacement procedures for upgrading obsolete R438 and R448 boards to the universal R450, configuring the compact R120 for shunt alternators, terminal wiring conversions, potentiometer calibration (P1-P4), and static diode testing.

Generator Speed Control System Guide: ESD5550E Governor, ADC225 Actuator, and MSP675 Sensor Integration

October 30, 2026

A stable diesel generator frequency depends on an integrated electronic speed control loop: the magnetic pickup sensor (MSP675) detects flywheel tooth pulses, the electronic speed control unit (ESD5550E/ESD5500E) calculates precise PID current corrections, and the electromagnetic rotary actuator (ADC225) positions the fuel injection rack. This guide covers terminal-by-terminal wiring, potentiometer commissioning, starting fuel ramp tuning, and vital independent overspeed safety protection.