China Top Automatic Transfer Switch Manufacturer

In the modern power system, power supply continuity is the core lifeline for building safety, industrial production and people’s livelihood operations. As the “heart” of the dual power supply system, the Automatic Transfer Switch (ATS) directly determines how well critical loads receive power supply, thanks to its stability, accuracy and safety. As one of the professional transfer switch manufacturers and a high-tech enterprise focusing on the low-voltage electrical field for many years, LVMA Electric deeply engages in the R&D, production and innovation of automatic transfer switches. With a full range of product matrix, core technical parameters, strict quality control and global service capabilities, we stand out among transfer switch manufacturers, become a trustworthy ATS solution provider in the industry, and build a solid power safety line of defense for global customers.

I. Technology Deep Cultivation: Dual Layout of PC Level + CB Level, Precisely Matching Full-Scenario Needs

Focusing on the power supply needs of different application scenarios, XX Electric independently researches and develops two core series of automatic transfer switches: PC-level isolation type and CB-level circuit breaker type. From core structure to performance parameters, it achieves independent control, balancing “extreme reliability” and “comprehensive practicality”, and fully covers all application scenarios from medical treatment, fire protection, data centers to ordinary buildings and industrial power distribution.

(I) PC-Level Automatic Transfer Switch: “Power Supply Guardian” for Critical Scenarios——Extreme Reliability, Millisecond-Level Switching

The PC-level ATS is an isolation-type dedicated switching device with an integrated interlocking structure and no built-in protection components. It focuses on power switching and isolation functions, boasting four core advantages: strong short-circuit withstand capacity, long mechanical life, fast switching speed and excellent safety isolation. It serves as the first choice for first-class load scenarios that cannot tolerate power outages, including hospital operating rooms, fire protection systems, data centers, airports and rail transit. As one of the professional transfer switch manufacturers, LVMA Electric ensures each PC-level ATS meets strict quality standards to safeguard critical power supply.

Core Accurate Parameters (PC-Level Series)

Rated Voltage: AC 400V/690V (50/60Hz), Insulation Voltage 1000V
Rated Current: 63A～6300A (full current coverage, suitable for high-current heavy-load scenarios)
Pole Number: 2P/3P/4P (suitable for single-phase/three-phase four-wire systems)
Switching Time:≤80ms (excitation type) / 150～300ms (load switch type), millisecond-level seamless switching to ensure no power outage for loads
Short-Time Withstand Current (Icw): 50kA/1s～100kA/1s, strong ability to withstand short-circuit impact, suitable for high short-circuit capacity systems
Electric Clearance/Creepage Distance: 50%～80% larger than that of CB level, eliminating voltage superposition faults during switching, and the isolation safety reaches the highest national standard level
Mechanical Life: ≥10000 times, no tripping mechanism, low failure rate, supporting frequent switching scenarios
Service Category: AC-33iB/AC-33B, capable of connecting/interrupting 10 times the rated current, suitable for complex working conditions such as motors and mixed loads
Protection Functions: Accurate detection of overvoltage/undervoltage/phase loss/neutral break, supporting three modes: automatic throw and automatic recovery, automatic throw and non-automatic recovery, and mutual standby
Recommended series:GA、GN、SA、SN、NA、Q、CT

(II) CB-Level Automatic Transfer Switch: “Cost-Effective Choice” for General Scenarios——Switching + Protection, Economical and Practical

The CB-level ATS is a circuit breaker-type combined device, integrated by two high-performance molded case circuit breakers through a mechanical interlocking mechanism. It has a built-in overcurrent release, with dual functions of automatic power switching and overload/short-circuit protection. No additional upper-level protection equipment is required, with compact size and controllable cost. It is widely used in non-critical load scenarios such as ordinary commercial buildings, civil residences, industrial power distribution, and lighting and air conditioning.

Core Accurate Parameters (CB-Level Series)

Rated Voltage: AC 400V (50/60Hz), Insulation Voltage 690V
Rated Current: 63A～1600A, covering small and medium-sized current needs, suitable for general power distribution scenarios
Pole Number: 2P/3P/4P, modular design, suitable for various power supply systems
Switching Time: 1～3s, meeting the power supply continuity needs of non-critical loads
Short-Circuit Breaking Capacity (Icu): 25kA～50kA, capable of directly breaking short-circuit fault current to protect lower-level loads
Mechanical Life: ≥5000 times, suitable for conventional switching frequency, easy maintenance
Service Category: AC-33B, suitable for ordinary lighting and power mixed loads
Protection Configuration: Built-in overload long-time delay, short-circuit instantaneous, and phase loss protection; residual current protection function can be customized
Controller: Basic/Standard/Intelligent options available, supporting automatic/manual/remote switching, and forced interlocking between manual and automatic modes
Recommended series:LMQ1-M、LMQ2Y、LMQ2CB、LMQ3-W

II. Enterprise Core Strength: Full-Chain Independent R&D and Manufacturing, Forging Quality Benchmark

1. R&D Strength: Independent Innovation, Technology Leadership

LVMA Electric has a 2000㎡ professional R&D center, with R&D team accounting for 30%. Core R&D personnel all have more than 10 years of experience in low-voltage electrical R&D and are deeply involved in the formulation of industry standards. The company’s annual R&D investment accounts for 15% of its revenue, and it has accumulated 8 invention patents and 25 utility model patents. It has mastered three core technologies of ATS: intelligent control algorithm, mechanical interlocking reliability design, and short-circuit withstand technology. Product performance is benchmarked against international first-line brands, and some parameters exceed industry standards.

2. Manufacturing Capacity: Fully Automated Production, Precision Control

The company is located in Yueqing, Zhejiang, the “Capital of Electrical Appliances in China”, with a 30,000㎡ modern production base. It has introduced internationally advanced production and testing equipment such as CNC machine tools, automatic stamping lines, precision injection molding machines, silver layer testing equipment, and high and low temperature aging laboratories, realizingfull-process independent manufacturing from raw material processing, component production to whole machine assembly and aging testing.

Full-Process Quality Control: Strictly following ISO9001 and ISO14001 international system certifications, each product undergoes 100% aging test, short-circuit withstand test, and switching reliability test, with a factory qualification rate of 100%.
Independent R&D of Core Components: The contacts are made of silver alloy material, with excellent electrical conductivity and arc wear resistance; the interlocking mechanism is reinforced with high-strength engineering plastics and metals to prevent misoperation and ensure switching reliability.

3. Certification Qualifications: International Recognition, Global Accessibility

The company’s products have passed international authoritative certifications such asChina 3C Compulsory Certification, CE, ROHS, GOST, complying with domestic and foreign standards such as GB/T 14048.11 and IEC 60947-6-1. They can be directly exported to more than 80 countries and regions in Europe, Southeast Asia, the Middle East, Africa, etc., adapting to different national power grid standards and certification requirements.

4. Production Capacity and Delivery: Stable Supply, Efficient Response

Production Capacity: The annual production capacity reaches100,000 sets of ATS equipment, which can undertake large-volume orders and support customized production (special voltage, current, and functional requirements).
Delivery: Standard orders are delivered within 7-15 days, and overseas orders are stably delivered within 15-20 days. A professional logistics team is equipped to ensure the safe and on-time delivery of goods.

5. Service System: Global Service, Full-Process Escort

LVMA Electric has built a “pre-sales, in-sales, after-sales” full-cycle service system:

Pre-sales: Provide free technical consultation, scenario scheme design, and parameter selection guidance, and customize ATS solutions tailored to needs.
In-sales: Follow up the production progress throughout the process, provide installation and commissioning guidance and technical training to ensure the smooth commissioning of equipment.
After-sales: 24-hour global technical support, with a warranty period of up to 2 years, far exceeding the industry average; multiple overseas service outlets are set up to quickly respond to after-sales needs and solve customers’ worries.

III. Core Advantages: Why Choose LVMA Electric Automatic Transfer Switch?

Full Product Coverage: Dual series of PC level + CB level, current 63A～6300A, pole number 2P/3P/4P, adapting to all dual power supply scenarios, one-stop procurement, reducing selection costs.
Extreme Reliability: PC-level millisecond switching and high short-circuit withstand; CB-level integrated switching and protection, independent R&D of core components, strict factory testing, and failure rate 0.3% lower than the industry average.
High Cost-Effectiveness: Benchmarked against international brand quality, 20%-30% lower in price, no middlemen, direct factory supply, reducing project procurement costs.
Customization Capability: Support customization of special voltage, frequency, protection functions and communication protocols, adapting to different national power grid standards and special scenario needs overseas.
Global Service: Multilingual technical team, 24-hour quick response, overseas network coverage, full-process escort for stable operation of equipment.

IV. Application Cases: Strength Witnessed, Spreading Globally

LVMA Electric’s automatic transfer switches have been widely used in many key projects around the world, and have been highly recognized by customers for their stable performance:

Domestic: Tertiary hospital operating rooms, first-tier city data centers, commercial complex fire protection systems, high-speed railway station power distribution projects, etc.
Overseas: Southeast Asian photovoltaic power stations, Middle Eastern commercial buildings, African industrial plants, European civil residences, etc. A total of more than 50,000 sets of equipment have been exported, with zero major quality accidents.

Conclusion

Power safety is no trivial matter, and reliable switching is the key. LVMA Electric has always been guided by “technological innovation as the core, reliable quality as the foundation, and customer needs as the orientation”, deeply cultivating the field of automatic transfer switches. With core technical parameters, strict quality control and full-cycle service capabilities, it provides safe, stable and efficient ATS solutions for global customers.

Choosing LVMA Electric means choosing professional, reliable and assured power safety guarantee. We look forward to cooperating with global customers to create a new future of power safety!

Published On: 2026-04-29

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