According to our (Global Info Research) latest study, the global Single-phase Current Transformer market size was valued at US$ 2098 million in 2025 and is forecast to a readjusted size of US$ 3173 million by 2032 with a CAGR of 6.1% during review period.
A single-phase current transformer is a current measurement and isolation conversion device designed for a single-phase AC circuit or for one phase conductor within a three-phase system. Its core function is to convert a large primary current into a smaller standardized secondary signal, according to a defined ratio, so that meters, energy meters, protection relays, monitoring modules, or data acquisition systems can receive the signal safely. This product category is usually composed of a magnetic core, secondary winding, insulating enclosure, terminals, and a mounting structure. Common forms include solid-core window type, split-core type, wound-primary type, bushing type, panel-mounted type, and compact structures for electronic measurement. Secondary outputs may include 5A, 1A, milliamp-level current, or low-voltage signals. It solves the problem that high current cannot be directly connected to measurement and protection equipment, while providing electrical isolation, ratio conversion, and safe access capability. Typical applications include utility metering, building submetering, industrial equipment monitoring, low-voltage distribution protection, data center branch-circuit monitoring, renewable energy grid connection, and charging infrastructure. Delivery forms include both standardized catalog products and componentized products matched with energy meters, protection devices, switchgear, and monitoring systems. Competitive priorities focus on measurement accuracy, insulation rating, installation convenience, rated-current coverage, safety certification, and long-term stability.
Single-phase current transformers are foundational devices in distribution measurement and protection systems. Their industry value does not lie in complex system integration, but in the long-term demand for safe measurement, electrical isolation, and standardized signal access across a large number of low-voltage and medium-voltage electrical circuits. In power systems, industrial equipment, and building distribution networks, many high-current circuits cannot be directly connected to meters or protection devices. Current transformers convert primary current into standardized secondary current or low-voltage signals through magnetic coupling, allowing energy meters, power meters, protection relays, monitoring modules, and energy management systems to read current information reliably. Although the single-phase structure appears simple, it is often the basic unit for phase-by-phase measurement in three-phase systems, single-phase branch metering, and equipment circuit monitoring. As low-voltage distribution digitalization, building energy submetering, factory equipment condition monitoring, and power asset renewal continue to advance, demand for this product category has both replacement-driven and new-point-deployment characteristics.
From a product-form perspective, single-phase current transformers are becoming increasingly segmented around installation efficiency, measurement accuracy, and system compatibility. Solid-core window products are suitable for new switchboards and standardized distribution systems, offering stable structure, controllable cost, and suitability for batch assembly. Split-core and separable-core products are better suited to retrofit projects because they can be installed without disconnecting the primary conductor, significantly reducing outage and installation costs. This makes them particularly applicable in existing buildings, commercial complexes, data centers, and industrial retrofit scenarios. Secondary outputs are also expanding from traditional 5A and 1A to 333mV, 100mA, milliamp-level, and low-power signals to support electronic meters, multi-circuit data collectors, and intelligent monitoring modules. High-accuracy metering products emphasize revenue metering and energy accounting, while protection-class products emphasize short-time withstand capability, insulation, and relay-protection compatibility. Competition is shifting from price alone toward a combined evaluation of accuracy, certification, safety, installation convenience, and platform compatibility.
From a market perspective, demand for single-phase current transformers is expected to expand steadily as the number of terminal measurement points in power systems increases. Utilities and distribution systems need continuous renewal of metering and protection assets. Commercial and industrial buildings need submetering to support energy management and operational optimization. Industrial users need circuit-current monitoring to understand equipment load and operating status. Data centers require more granular branch-circuit monitoring to support capacity planning and reliability management. Renewable energy grid connection, energy storage, charging infrastructure, and microgrid construction further increase demand for current sampling points. On the supply side, companies in Europe, the United States, and Japan have brand and certification advantages in instrument-grade, protection-grade, and high-reliability products, while Chinese companies have cost and supply-chain advantages in low-voltage standard products and high-volume manufacturing. The industry is unlikely to be replaced by a single technology route; instead, standard low-voltage products, retrofit split-core products, high-accuracy metering products, and protection-grade current transformers are likely to develop in parallel.
This report is a detailed and comprehensive analysis for global Single-phase Current Transformer market. Both quantitative and qualitative analyses are presented by manufacturers, by region & country, by Material System and by Application. As the market is constantly changing, this report explores the competition, supply and demand trends, as well as key factors that contribute to its changing demands across many markets. Company profiles and product examples of selected competitors, along with market share estimates of some of the selected leaders for the year 2025, are provided.
Key Features:
Global Single-phase Current Transformer market size and forecasts, in consumption value ($ Million), sales quantity (K Units), and average selling prices (US$/Unit), 2021-2032
Global Single-phase Current Transformer market size and forecasts by region and country, in consumption value ($ Million), sales quantity (K Units), and average selling prices (US$/Unit), 2021-2032
Global Single-phase Current Transformer market size and forecasts, by Material System and by Application, in consumption value ($ Million), sales quantity (K Units), and average selling prices (US$/Unit), 2021-2032
Global Single-phase Current Transformer market shares of main players, shipments in revenue ($ Million), sales quantity (K Units), and ASP (US$/Unit), 2021-2026
The Primary Objectives in This Report Are:
To determine the size of the total market opportunity of global and key countries
To assess the growth potential for Single-phase Current Transformer
To forecast future growth in each product and end-use market
To assess competitive factors affecting the marketplace
This report profiles key players in the global Single-phase Current Transformer market based on the following parameters - company overview, sales quantity, revenue, price, gross margin, product portfolio, geographical presence, and key developments. Key companies covered as a part of this study include ABB, ADTEK Electronics, GE Vernova, Schneider Electric, Schweitzer Engineering Laboratories, TDK, Yokogawa, TWB SA, Sigma Elektrik, Socomec, etc.
This report also provides key insights about market drivers, restraints, opportunities, new product launches or approvals.
Market Segmentation
Single-phase Current Transformer market is split by Material System and by Application. For the period 2021-2032, the growth among segments provides accurate calculations and forecasts for consumption value by Material System, and by Application in terms of volume and value. This analysis can help you expand your business by targeting qualified niche markets.
Market segment by Material System
Resin-Insulated Type
Plastic-Housed Type
Oil-Immersed Type
Gas-Insulated Type
Other
Market segment by Core Opening Structure
Closed-Core Type
Split-Core Type
Market segment by Primary Conductor Configuration
External Through-Conductor Type
Built-in Primary Conductor Type
Other
Market segment by Application
Utility Metering and Protection
Building Submetering
Industrial Equipment Monitoring and Control
Data Center Branch-Circuit Monitoring
Renewable Energy and Charging Infrastructure
Other
Major players covered
ABB
ADTEK Electronics
GE Vernova
Schneider Electric
Schweitzer Engineering Laboratories
TDK
Yokogawa
TWB SA
Sigma Elektrik
Socomec
SELEC Controls
Orion Italia
LUMEL
Littelfuse
HARTING
IME
Hitachi Energy
Eaton
Siemens
Leviton
CR Magnetics
NK Technologies
Accuenergy
Magnelab
CHINT
Janitza
LOVATO Electric
CIRCUTOR
FLEX-CORE
Continental Control Systems
MBS AG
Carlo Gavazzi
Market segment by region, regional analysis covers
North America (United States, Canada, and Mexico)
Europe (Germany, France, United Kingdom, Russia, Italy, and Rest of Europe)
Asia-Pacific (China, Japan, Korea, India, Southeast Asia, and Australia)
South America (Brazil, Argentina, Colombia, and Rest of South America)
Middle East & Africa (Saudi Arabia, UAE, Egypt, South Africa, and Rest of Middle East & Africa)
The content of the study subjects, includes a total of 15 chapters:
Chapter 1, to describe Single-phase Current Transformer product scope, market overview, market estimation caveats and base year.
Chapter 2, to profile the top manufacturers of Single-phase Current Transformer, with price, sales quantity, revenue, and global market share of Single-phase Current Transformer from 2021 to 2026.
Chapter 3, the Single-phase Current Transformer competitive situation, sales quantity, revenue, and global market share of top manufacturers are analyzed emphatically by landscape contrast.
Chapter 4, the Single-phase Current Transformer breakdown data are shown at the regional level, to show the sales quantity, consumption value, and growth by regions, from 2021 to 2032.
Chapter 5 and 6, to segment the sales by Material System and by Application, with sales market share and growth rate by Material System, by Application, from 2021 to 2032.
Chapter 7, 8, 9, 10 and 11, to break the sales data at the country level, with sales quantity, consumption value, and market share for key countries in the world, from 2021 to 2026.and Single-phase Current Transformer market forecast, by regions, by Material System, and by Application, with sales and revenue, from 2027 to 2032.
Chapter 12, market dynamics, drivers, restraints, trends, and Porters Five Forces analysis.
Chapter 13, the key raw materials and key suppliers, and industry chain of Single-phase Current Transformer.
Chapter 14 and 15, to describe Single-phase Current Transformer sales channel, distributors, customers, research findings and conclusion.
Summary:
Get latest Market Research Reports on Single-phase Current Transformer. Industry analysis & Market Report on Single-phase Current Transformer is a syndicated market report, published as Global Single-phase Current Transformer Market 2026 by Manufacturers, Regions, Type and Application, Forecast to 2032. It is complete Research Study and Industry Analysis of Single-phase Current Transformer market, to understand, Market Demand, Growth, trends analysis and Factor Influencing market.