Explore our most popular Automatic Transfer Switch models — engineered for reliability and precision
Zhejiang LVMA Electric Co., Ltd. was headquartered in Wenzhou, Zhejiang Province, the world's electrical capital. It is a focus on smart power equipment research and development, production and service of National high-tech Enterprises. With the mission of "Smart Power, Safe Life", the company deeply cultivates the field of dual power automatic transfer switch (ATS) and intelligent power distribution equipment, with the leading technical strength and excellent product quality, to be a trusted global provider of power solutions for industry, commerce and utilities.
Bangkok, Thailand's vibrant capital and economic engine, is experiencing a significant surge in demand for reliable power protection systems. As the city continues its rapid urban expansion — with landmark projects such as the Eastern Economic Corridor (EEC) development, the expansion of Suvarnabhumi and Don Mueang airports, and a proliferation of smart industrial estates — the need for dependable 20A Automatic Transfer Switches has never been greater.
Thailand's electrical infrastructure investment reached record levels in recent years, driven by government policy pushing toward Thailand 4.0 and Smart City initiatives. Bangkok alone hosts thousands of mid-scale commercial facilities, medical clinics, IT offices, and light manufacturing units that rely on 20A ATS devices to ensure zero downtime during grid fluctuations — a common challenge given Thailand's seasonal storm patterns and aging grid segments in outer districts.
⚡ A 20A Automatic Transfer Switch (ATS) is the critical backbone of uninterrupted power supply systems for small-to-medium facilities, data nodes, and commercial buildings across Bangkok and the wider Southeast Asian region.
The 20A rating occupies a strategic sweet spot in the Thai market: powerful enough to protect critical sub-circuits in hospitals, hotels, offices, and retail units, yet compact and cost-effective enough for SME facilities. In Bangkok's Silom, Asoke, and Lad Krabang industrial zones, building operators consistently specify 20A ATS units for generator-to-mains changeover panels, server room protection, emergency lighting circuits, and CCTV/security system continuity.
Thailand's National Energy Policy Office (NEPO) and MEA (Metropolitan Electricity Authority) guidelines increasingly encourage businesses to install automatic transfer switching systems to reduce strain on the grid and improve facility resilience — further accelerating market adoption.
Modern Bangkok commercial developments demand ATS units with built-in communication protocols (Modbus, RS-485, dry contacts) enabling integration with BMS (Building Management Systems). LVMA's intelligent ATS controllers — such as the Y-700 and Y-701 series — deliver exactly this capability, allowing facility managers to monitor power switching events remotely via dashboards and mobile apps.
Thailand's Alternative Energy Development Plan (AEDP) targets 30% renewable energy by 2037. This drives unprecedented demand for ATS systems capable of managing three-way switching: utility grid, backup generator, and solar/battery sources. Industrial parks in Rayong, Chonburi, and the Bangkok metropolitan fringe are already specifying multi-source ATS configurations for new facilities.
Bangkok has emerged as Southeast Asia's fastest-growing data center hub, with major hyperscalers and local colocation providers expanding capacity. Every rack and power distribution unit in these facilities relies on ATS technology at multiple levels — from the 20A branch circuit tier through to high-amperage main switchgear — creating sustained, high-volume procurement demand for quality ATS products.
Thailand's Universal Health Coverage program and medical tourism growth are fueling hospital construction across Bangkok and provincial capitals. IEC and Thai standard (TIS) compliant ATS systems are mandatory for critical care units, operating theaters, and life-support circuits — a regulatory driver that makes certified, factory-tested ATS products like those from LVMA Electric highly sought after.
State-of-the-art production facilities, rigorous testing, and precision engineering











End-to-end excellence from raw material to final delivery
LVMA Electric fully implements the 7S management method, integrating quality discipline into every production link. From strict raw material screening to the careful crafting of each key process, and through to rigorous final product testing — every detail reflects LVMA's uncompromising pursuit of excellence.
Main production lines are equipped with advanced automatic testing equipment, including pressure testing, comprehensive performance testing, aging testing, final quality testing, and life cycle testing — ensuring every product meets or exceeds industry standards.
An independent professional laboratory conducts comprehensive, in-depth testing of components and finished products, providing solid technical backing for every ATS unit that leaves the facility. Our engineers are available to support Bangkok-based distributors and end users throughout the product lifecycle.
Innovation, global reach, and a commitment to long-term partnership
LVMA's R&D team of nearly 20 senior engineers continuously explores new technologies and processes. More than 30 valuable patents have been obtained, driving both product upgrades and broader industry advancement. These innovations translate directly into more reliable, faster-switching, and smarter ATS products for Bangkok buyers.
A dedicated global marketing team of approximately 30 professionals brings keen market insight and exceptional service capability, maintaining long-term stable relationships with top customers worldwide — including distributors and project contractors across Southeast Asia and Thailand.
LVMA Electric products are selling strongly across Europe, the Middle East, South Asia, Southeast Asia, and Africa. Brand influence is growing rapidly, with increasing penetration in the Thai and ASEAN markets as infrastructure spending accelerates across the region.
LVMA Import and Export Co., Ltd. — a wholly owned subsidiary — plays a pivotal role in international trade, streamlining the global circulation of LVMA products and enhancing competitive positioning in international markets including Thailand, ensuring fast delivery and smooth import logistics to Bangkok.
Trusted ATS solutions deployed across every critical sector of Thailand's economy






Key forces reshaping the automatic transfer switch landscape across the region
Thailand's grid modernization under the AEDP plan is accelerating demand for intelligent ATS units with remote monitoring, SCADA connectivity, and real-time fault reporting — replacing legacy manual changeover systems in Bangkok's expanding commercial zones.
The trend toward compact, DIN-rail-mountable 20A ATS units allows installation in tight panel boards common in Bangkok's high-density residential and office towers — expanding the addressable market significantly while reducing installation cost.
As rooftop solar and battery storage deployments surge across Thai industrial and commercial rooftops, ATS systems that support three-source switching (utility + generator + solar/battery) are becoming the new specification standard for premium Bangkok projects.
Building owners and facility managers increasingly demand ATS solutions with IoT capability — enabling remote status visibility, automatic alerts on power events, and integration with mobile facility management apps. LVMA's smart controller lineup leads this trend.
Thailand's updated electrical codes and IEC 60947-6-1 compliance requirements are raising the bar for ATS performance, arc flash protection, and operational reliability — creating a clear advantage for certified factory suppliers like LVMA over non-certified alternatives.
The Eastern Economic Corridor (EEC) initiative is drawing billions in FDI to Chonburi and Rayong, spawning hundreds of new factories and logistics hubs — all requiring robust power protection systems, with 20A ATS units serving sub-panel and critical branch circuit applications.
LVMA Electric has been committed to bringing satisfactory products and services to customers from all walks of life across Southeast Asia.

A variety of automatic transfer switch products fully meet your needs.

Customized service: different voltage, current size, external size, conversion time, etc., for your choice.

Product Application Guide: Depending on your environment, we provide product selection and use recommendations to ensure the best match.

Strict quality control: 100% quality inspection before shipment.

Logistics and distribution: our professional logistics team ensures safe and timely delivery of products to Bangkok and across Thailand.

Support for operation outside the cabinet: optional accessories to achieve external cabinet operation functions.

Technical Support and Consultation: Professional technical engineers ensure perfect after-sales service for all Bangkok and Thailand customers.

Environmental protection and safety: all products comply with ISO9001, ISO14001, and ISO45001 international certification standards.

No matter what your industry, we can provide you with the most appropriate solutions. Believe us — you can not only get high-quality products, but also get thoughtful technical support and professional services throughout the process. Let us work together to create a more efficient and smarter future!
Full series of Automatic Transfer Switch products — from 20A compact units to heavy-duty 630A industrial solutions