According to data from MIR Research & Intelligence, the market size of China's low-voltage inverter market in 2025 is approximately CNY 28.6 billion, a year-on-year growth of 1.3%, marking a return to positive growth since 2022. Among them, the OEM market has performed relatively well and remains an important source of demand for low-voltage inverters.
Overall Market Size of China's Low-Voltage Inverter Market from 2020 to 2028 (Unit: Million CNY)
Data Source: MIR DATABANK
Over the past decade, the growth story of China's manufacturing industry has mostly been written in the word "big"—large production lines, large projects, and large equipment. However, in the OEM equipment market, apart from large-scale automated production lines, a massive number of standardized and modular small-scale equipment also constitute a vital part of industrial automation applications. A food packaging line, a woodworking edge banding machine, a set of roller conveyor units, and an agricultural irrigation water pump system—these devices usually do not require high power, yet they are widely distributed across various production sites.
For such small-scale automated equipment, inverters do not need to undertake complex motion control tasks. Instead, they must meet basic requirements such as stable operation, simple commissioning, and easy installation and maintenance, all within limited costs and cabinet space.
Against the backdrop of cost competition, equipment miniaturization, and continuously compressed delivery cycles, how to find an appropriate balance among cost, space, stability, and ease of use with an inverter that meets "essential and sufficient" needs has become a practical issue that small equipment manufacturers must face during inverter selection.
01. Industry Pain Points: The "Real Dilemma" of Small Equipment Manufacturers
The inverter demand in the small equipment market differs from that in large industrial projects. For small OEM equipment manufacturers, selecting an inverter is not simply about "power matching." Given the miniaturization of equipment and continuously compressed delivery cycles, inverters must simultaneously meet multiple requirements, including economy, space efficiency, ease of use, and reliability.
1. Economy: The small OEM equipment market is fiercely competitive, with strict budget control and repeatedly compressed equipment profits. Manufacturers are unwilling to pay for unused high-performance specifications; the procurement of core components must be both cost-effective and reliable;
2. Space: As equipment continues to become more compact, the internal space of control cabinets is becoming increasingly limited, and the side-by-side installation of multiple products is becoming more common. The size, installation method, and wiring direction of the inverter will directly affect the overall structural design of the machine;
3. Usage and Maintenance: For a large number of standardized equipment, inverters must accommodate on-site personnel with varying technical levels, addressing the pain points of high commissioning thresholds and slow delivery. Additionally, equipment is often distributed across different production environments. Factors such as heat dissipation, dust, moisture, and electromagnetic interference also pose requirements for the long-term stable operation of inverters.
Individually, these issues may not seem like "major problems," but when combined, they translate into the real costs that small equipment manufacturers face every day. Is there an inverter that can solve these problems simultaneously—one that is "essential and sufficient," "stable and reliable," and "compact and flexible"?
02. Hechuan E605 Compact Inverter: How to Solve the Pain Points of Small-Scale Automated Equipment?
Addressing the actual needs of small-scale automated equipment, Hechuan has provided the answer.
Hechuan's E605 compact inverter is a product tailor-made within Hechuan's industrial drive product family to meet the needs of small-scale automated equipment. Its power range covers 0.4~7.5kW, encompassing different voltage levels such as single-phase AC200V~240V and three-phase AC380V~480V. The product features built-in Modbus communication, and the entire series comes standard with digital input/output and analog input. It is characterized by easy operation, compact structure, and high cost-effectiveness, precisely adapting to the needs of different application scenarios such as packaging, woodworking, conveying, and fans and water pumps, focusing on being "convenient and easy to use, stable and reliable, compact and flexible."
Compared to high-performance products that pursue "large and comprehensive" functions, E605 places more emphasis on the coverage of basic functions, compact structure, and ease of use. It focuses on the speed regulation, protection, and communication needs of small-scale, high-frequency applications, and optimizes aspects such as size, heat dissipation, protection, and operation. For smart production lines with limited space, distributed equipment requiring frequent maintenance, and OEM manufacturers demanding extreme space efficiency, E605 provides a "just right" drive option.
Five Core Advantages of Hechuan E605:
1. Agile Design:
For small-scale equipment, control cabinet space is often where every inch is precious.
The E605 adopts a book-style appearance design with smooth, concise, and neat lines. It supports side-by-side installation, saving precious space in the cabinet. It is especially suitable for smart production lines with limited space, distributed equipment requiring frequent maintenance, and OEM manufacturers demanding extreme space efficiency. The product features an independent air duct design that isolates electronic components from the air duct, enhancing the protection of key components; a plug-in heat sink paired with an axial fan, combined with multiple air outlet cooling channels, helps improve the product's heat dissipation efficiency; and the introduction of unique heat dissipation materials allows for better control of the inverter's temperature rise.
2. Simple and Easy to Use
For standardized small-scale equipment, inverters are used frequently and in large quantities. Commissioning efficiency directly affects equipment delivery. To this end, the E605 provides a relatively simplified operation method for different users.
For novice users, the E605 supports selecting a preset mode → wiring → starting, allowing it to be put into operation in just 3 steps. For experienced engineers, customized control can be further achieved through advanced parameters, ensuring that technology is no longer a barrier to use. Meanwhile, the E605 supports external keyboard connection, and the main panel of the inverter can be independently installed on the cabinet door. Its excellent vector control algorithm enables automatic identification of motor parameters, allowing the inverter to achieve good motor control capability without setting other parameters.
3. Safe and Reliable
Small-scale equipment is numerous and widely distributed. Once an inverter fails, it not only affects the operation of a single device but may also increase the after-sales and maintenance costs for equipment manufacturers.
To address this, the E605 optimizes hardware-level protection functions such as overcurrent, overvoltage, and short circuit in its product design, and strengthens safety guarantees during operation through an independent cooling air duct and a high-temperature warning mechanism. Addressing environmental factors such as moisture, dust, and corrosion that may exist in industrial sites, the product's PCB adopts an enhanced coating design, and is equipped with a built-in EMC filtering design. While meeting the applications of general industrial scenarios, it further improves the product's adaptability in harsh industrial environments.
4. Bottom-In and Bottom-Out Wiring
In small control cabinets, besides the size of the product itself, the wiring method also affects the cabinet layout.
The power cables and motor cables of the E605 both enter and exit from the bottom of the inverter, which helps reduce horizontal space occupation. It is especially suitable for small distribution cabinets or dense installation scenarios, facilitating the optimization of the overall equipment layout. Power cables and control cables are arranged in layers (e.g., weak current on the left, strong current on the right), reducing the risk of electromagnetic interference and enhancing system stability; it is suitable for space-constrained cabinets, side-by-side installation of multiple inverters, or industrial environments with high electromagnetic compatibility requirements. The wiring area is concentrated at the bottom, making it convenient for later inspection or cable replacement, avoiding the blocking or touching risks caused by cables hanging down when wiring from the top, thus ensuring safer operation.
5. Smart Interconnection
The entire E605 series comes standard with an RS485 communication interface, supports the Modbus-RTU protocol, and facilitates convenient networking to realize remote data monitoring and control of each inverter. It also supports remote IO, transmitting on-site IO signals directly into the inverter and uploading them to the PLC via communication. For small-scale automated equipment, this means achieving "end-to-end networking" without incurring excessive additional costs.
With these advantages, Hechuan E605 helps small and medium-sized equipment manufacturers achieve intelligent transformation, reduce the costs of complete machine matching and commissioning, and improve production efficiency and market competitiveness.
03. From Fans/Water Pumps and Conveyor Lines to Agricultural Irrigation: E605 Covers Multiple Small Equipment Scenarios
Currently, the E605 is widely used in multiple industrial fields:
In the energy-saving transformation scenarios for fans and water pumps, the E605 can be applied to axial fans, submersible pumps, and centrifugal pumps. It automatically adjusts the speed according to actual load requirements, achieving an energy-saving effect of 5%~15%. Meanwhile, it reduces mechanical impact through soft starting, decreases the wear of motors and bearings, and reduces the failure of electrical components caused by frequent starting and stopping, helping users lower maintenance costs and extend equipment service life.
In the speed regulation control of conveyor belts and conveyor lines, whether it is a belt conveyor, chain plate conveyor, or roller conveyor line, it can precisely match the speed requirements of different sections. It supports up to 16-speed operation and ensures controllable acceleration during starting and stopping, avoiding product tipping or collision and reducing material loss.
In the field of food packaging machinery, sub-packaging lines, filling machines, and packaging machines can quickly switch packaging sizes through the multi-speed function, flexibly adapting to products of various specifications. The enhanced PCB protection design can resist the erosion of water vapor and food debris, further reducing downtime caused by environmental factors.
In small processing equipment such as woodworking engraving machines and metal cutting machines, sensorless vector control can improve the torque control capability of the motor during low-speed operation, meeting the speed regulation needs under different processing conditions. Under low-load or no-load conditions, unnecessary energy consumption can be reduced by lowering the operating frequency, achieving an energy-saving effect of 5%~15% as well.
In agricultural irrigation and breeding scenarios, the E605 can be used in equipment such as submersible pumps, spray pumps, and exhaust fans. It automatically adjusts the flow rate based on temperature and humidity sensor signals, realizing on-demand water supply and ventilation. Its corrosion-resistant design allows it to easily adapt to harsh environments with high humidity and fertilizer mist.
04. From Single Products to a Matrix: Hechuan Inverters Accelerate the Expansion of Application Boundaries
The E605 addresses the basic drive needs of small equipment, but for different power levels, control complexities, and application scenarios, the demands of OEM manufacturers for inverters are not entirely the same.
Currently, Hechuan has formed general-purpose inverter products with different positioning such as E605, E610, and E630, and further deployed industry-specific products such as the E615 with high protection and the E617 wall-through type. The power range covers 0.4kW to 400kW, meeting the application scenarios of different industrial equipment.
Compared to single-product competition, gradually improving the product matrix also means that Hechuan is further expanding the application boundaries of inverters in different equipment and industries. For OEM equipment manufacturers, product selection can be made based on the equipment's power, control complexity, installation space, and cost requirements; for end-users, they can obtain drive solutions that better match specific application needs.
In the future, Hechuan will continue to improve the product layout of inverters, promote the technological iteration and quality upgrade of new categories, and continuously enrich product specifications and series. Currently, the company has completed the hardware and software adjustments for customized substitution solutions targeting inverters from well-known international brands. In the future, it will focus on exploring the segmented needs in industries such as machine tools, wires and cables, and ceramics, accelerating the process of domestic substitution in the inverter field, and serving more industry users with a more complete product family.
Conclusion
For small-scale automated equipment, inverters do not necessarily need "large and comprehensive" functions, but they need to find an appropriate balance among cost, space, reliability, and ease of use.
Starting from the actual needs of small equipment, Hechuan E605 positions itself as "convenient and easy to use, stable and reliable, compact and flexible", concentrating product capabilities on high-frequency application needs, and providing a lightweight drive solution for small and medium-sized OEM equipment.
From a broader market environment perspective, given the continuous advancement of the localization process for low-voltage inverters, the competition among domestic manufacturers is also extending from the traditional OEM market to more segmented industrial scenarios. For manufacturers, domestic substitution is not only about the competition in product performance and price but is also increasingly reflected in the understanding of equipment needs and scenario adaptation capabilities.
From this perspective, the "small equipment" market that the E605 has entered also reflects the trend of domestic substitution for low-voltage inverters deepening from simple product replacement to segmented scenario adaptation.