In the field of power engineering and equipment upgrades, most people assume that obsolete switchgear, once decommissioned, can only be recycled at a discount as scrap iron or copper, with virtually no residual value. However, the reality of the second-hand power equipment market paints a completely different picture: retired switchgear from certain top-tier brands and high-quality models-even after more than a decade of service-remains in high demand with strong residual value, commanding prices far exceeding those of ordinary, unbranded new units. This disparity in second-hand residual value is by no means simply a matter of material value; rather, it is a comprehensive reflection of the equipment's structural design, operational stability, compatibility, and potential for future retrofitting. Whether it is the mainstream 12 kV switchgear, general-purpose air-insulated switchgear (AIS), or high-end metal-clad switchgear, the disparity in residual value among different categories and brands of equipment is stark, directly determining a project's ability to preserve asset value during retrofits.
Many engineering firms focus solely on initial procurement costs during the early equipment selection phase, neglecting the residual value over the equipment's full lifecycle. This leads to significant asset depreciation during substation retrofits or project relocations. In contrast, companies that practice refined operations and maintenance can significantly reduce their average annual equipment operating costs by leveraging the resale of equipment with high residual value. This article will provide an in-depth analysis of the core logic behind determining the residual value of switchgear. By examining the market circulation characteristics of 12 kV switchgear, air-insulated switchgear (AIS), and metal-clad switchgear, it will explore the underlying reasons why high-quality used equipment remains in high demand.
I. Dispelling Misconceptions: The Residual Value of Switchgear ≠ Metal Recycling Value
Most people's perception of the value of used switchgear is limited to the scrap recycling prices of the steel enclosure, internal copper busbars, and components. Data shows that the scrap metal value of standard medium-voltage switchgear is only 10%–15% of the price of new equipment, whereas the residual value of high-quality, secondhand, operational equipment in the market can reach 30%–50% of the price of new units, and even higher for certain premium units in good operating condition. This difference in value is precisely the core manifestation of the equipment's "reusability value."
In the secondhand market, the residual value performance varies significantly across different types of equipment. Conventional 12 kV switchgear has a large installed base and a wide range of applications; standardized models circulate extensively, and their residual value remains consistently stable. Traditional air-insulated switchgear (AIS) features a simple structure and easy maintenance, making it suitable for temporary power distribution in small- and medium-sized projects or as a transitional solution for plant expansion, with ample demand in the essential-needs market; In contrast, high-end metal clad switchgear-due to its high manufacturing standards, ample protective redundancy, and long service life-features scarce and highly sought-after premium used units, with residual value depreciation occurring at a much slower rate than that of ordinary equipment.
Simply put: Old equipment from unbranded manufacturers retains only "material value," while high-quality, branded used equipment possesses "reusable value." This is the core dividing line that accounts for their vastly different fates in the second-hand market.
II. Residual Value Differences Between Class II and Class III Switchgear: Why Do High-End, Standardized Devices Retain Their Value Better?
Based on data from the secondhand power equipment market, the logic behind retaining value differs for the three types of equipment-12 kV switchgear, air-insulated switchgear (AIS), and metal clad switchgear-with their market demand precisely corresponding to their level of standardization, durability, and range of applicable scenarios.
12 kV Switchgear: Maximum Versatility, Market Demand Underpins Residual Value
As the core equipment for industrial and mining enterprises, municipal distribution networks, and industrial park power distribution, standardized 12 kV switchgear is the most widely traded and highly recognized medium-voltage switchgear in the secondhand market. With uniform national standards for overall specifications, highly interchangeable components, and widespread familiarity with operation and maintenance techniques, it is suitable for virtually all conventional power distribution scenarios. Many small- and medium-sized technical renovation projects, temporary construction power distribution setups, and renovation projects for older residential communities prioritize high-quality used 12 kV switchgear, as it not only meets compliance requirements but also significantly reduces project costs. The massive market demand ensures that the residual value of this equipment remains consistently strong and does not depreciate significantly due to aging.
Air-Insulated Switchgear (AIS): Simple, Durable Design; Highly Sought-After for Transitional Scenarios
Air-insulated switchgear (AIS) features a simple design, low failure rate, and extremely low operational and maintenance barriers, requiring no complex sealing maintenance or precision testing. For short-term commissioning projects, temporary power distribution projects, and training and education scenarios, where the cost of new equipment is prohibitively high, secondhand AIS equipment in good working condition becomes the optimal choice. This type of equipment lacks precision components prone to wear and tear and ages slowly. As long as the cabinet shows no deformation and the insulation is intact, it can be reliably reused after simple maintenance and calibration. With its outstanding cost-effectiveness, it remains a perennial bestseller in the secondhand market.
Metal-clad switchgear: Ample design redundancy and an exceptionally long service life ensure high residual value
Compared to standard switchgear, metal-clad switchgear features comprehensive upgrades in design standards, process redundancy, and material quality. Its independent compartment structure, thickened cabinet steel plates, high-grade insulation configuration, and comprehensive mechanical interlocks ensure a design life far exceeding that of conventional models. Many metal-clad units that have been in service for 10 years still maintain electrical and mechanical performance close to that of new equipment. Due to their high protection rating, strong resistance to operational disturbances, and ample safety redundancy, high-quality used metal-clad switchgear is highly favored in high-end industrial retrofit projects. Its residual value depreciates extremely slowly, making it the category with the strongest value retention among the three types of equipment.
III. Four Core Underlying Factors Behind the Continued High Demand for High-Quality Used Equipment
Beyond differences in equipment categories, what truly drives the disparity in residual value among used switchgear is brand craftsmanship, operational history, standardization, and potential for retrofitting-these are also the key reasons why high-quality used equipment is so highly sought after in the market.
1. Ample Design Margins: Actual Service Life Far Exceeds Nominal Design Specifications
Switchgear from leading brands exceeds national standards in terms of material quality, manufacturing precision, insulation margins, and mechanical lifespan, resulting in actual service capabilities that far surpass the nominal service life. Much of the decommissioned equipment is phased out passively due to project relocations or power distribution upgrades, rather than performance failures. After basic maintenance and component replacement, it can operate reliably for another 8–10 years, offering far better value for money than brand-new, unbranded equipment.
2. High degree of standardization, with no barriers to spare parts or O&M
Popular models with high residual value are all industry-standardized products. Spare parts are universally available, O&M techniques are well-established, and there is a wealth of documented failure cases. In contrast, niche, non-standard equipment faces the dilemma of discontinued spare parts and unavailability of maintenance personnel once decommissioned, rendering it virtually worthless on the secondary market. Whether it is standard 12 kV switchgear or mainstream air-insulated switchgear (AIS) and metal clad switchgear, standardized design provides the core guarantee for the equipment's reuse.
3. Clear Operational History, Controllable Operational Risks
Switchgear decommissioned from high-quality projects has undergone standardized operation and maintenance throughout its service life, including regular testing and calibration, with no history of overload operation, severe short-circuit damage, or corrosion and water ingress. Buyers can accurately assess the equipment's condition through test data and maintenance records, ensuring controllable risks and peace of mind for reuse. This is also the core reason why the secondhand market favors equipment from reputable brands.
4. Ample Room for Retrofits, Meeting Smart Upgrade Requirements
High-quality, older switchgear offers ample room for upgrades, allowing for the convenient installation of modules such as smart monitoring, temperature and partial discharge detection, and remote control to meet current smart power distribution needs. After low-cost retrofitting and upgrades, this used equipment perfectly aligns with the smart operation and maintenance standards of small and medium-sized projects, offering unmatched value for money.
IV. Industry Insights: Equipment Selection Should Focus Not Only on Current Price but Also on Long-Term Residual Value
The total life-cycle cost of switchgear has never been limited to the initial purchase price; rather, it is calculated as "purchase cost – secondhand residual value + operation and maintenance costs." To reduce initial budgets, many projects opt for low-cost, unbranded equipment. While this may seem cost-effective, the equipment is virtually worthless when it comes time for retrofitting or decommissioning several years later, resulting in significant asset depreciation.
In contrast, selecting standardized, high-quality 12 kV switchgear, durable air-insulated switchgear (AIS), and highly redundant metal-clad switchgear from the outset not only results in fewer failures and lower O&M costs during the operational period but also retains a substantial resale value upon decommissioning. This maximizes the utilization of fixed assets and helps reduce long-term electricity costs.
Conclusion
The residual value of switchgear is the truest test of equipment quality. The market will not pay for substandard equipment, but it is always willing to pay a premium for high-quality craftsmanship, standardized design, and exceptional service life. From general-purpose 12 kV switchgear and simple, durable air insulated switchgear (AIS) to high-end, highly redundant metal-clad switchgear, the value retention capabilities of different product categories confirm the industry principle that "quality determines residual value." For industrial enterprises and power projects operating over the long term, understanding the logic behind residual value and making equipment selections with a long-term perspective is the ultimate wisdom in the precise cost management of power distribution equipment.
About us
Zhejiang Lvma Electric Co., Ltd. was founded in 2018, building on 17 years of industry know-how in electrical equipment. Certified to ISO 9001:2015, we focus on producing intelligent switchgear together with oil-immersed and dry-type distribution transformers. Our products reach markets in Europe, the Middle East, South America, Southeast Asia, and Africa.
Our R&D team holds over 40 patents, supporting our transition from a conventional manufacturer to a provider of smart, sustainable power solutions. Using digitalized production lines and real-time monitoring, we offer innovative, safe, and durable electrical equipment for modern energy infrastructure.