Global Solid-State Circuit Breakers Market Outlook, 2031

Solid-state circuit breakers use power semiconductor devices, such as silicon carbide MOSFETs and JFETs, insulated gate bipolar transistors, integrated gate-commutated thyristors and gallium nitride devices, instead of mechanical contacts to interrupt current. Because there is no moving contact and no arc to extinguish, they can interrupt faults in microseconds rather than milliseconds, which limits fault current, reduces arc flash energy and protects sensitive equipment. Hybrid circuit breakers combine a mechanical path for low losses in normal operation with a semiconductor path for fast interruption. Solid-state breakers are particularly valuable for DC systems, where there is no natural current zero, including data centre power, battery storage, electric vehicle charging, ships, rail, aircraft, microgrids and photovoltaic systems. Examples include ABB's SACE Infinitus, rated up to 2,500 amperes at 1,000 volts DC and able to interrupt faults in under 25 microseconds, and products and developments from Atom Power, Eaton, Siemens, Schneider Electric, SolarEdge, Littelfuse and others, with semiconductor suppliers such as Infineon, Wolfspeed, onsemi, STMicroelectronics and Power Integrations. Conduction losses, cost and certification determine competitiveness.

The market is small but growing quickly from a low base, shaped by DC power architectures, data centres, electrified transport, renewable and storage integration and advances in wide-bandgap semiconductors. Between 2024 and 2026, momentum built: NVIDIA announced in May 2025 a move toward 800 volt DC power distribution for future AI data centres, with semiconductor and power partners, which created strong interest in solid-state protection; SolarEdge announced a solid-state transformer platform in November 2025 and in September 2026 extended its collaboration with Infineon on solid-state breakers for 800 volt DC data centres; and ABB published the first externally verified Type III environmental product declaration for a solid-state circuit breaker in July 2026. Through 2031, key variables are the cost of silicon carbide devices, conduction losses and cooling, standards and certification for DC protection, adoption of DC architectures in data centres and buildings, and reliability evidence. Suppliers with low-loss designs and strong certification are expected to hold an advantage.

Drivers •Shift to DC Power Architectures in Data Centres, Storage and Transport DC distribution reduces conversion steps and losses in data centres, battery storage, electric vehicle charging, ships, rail and microgrids, but DC faults are harder to interrupt with mechanical breakers because there is no natural current zero. Solid-state breakers interrupt DC faults quickly and safely, making them a key enabler for 800 volt and higher DC architectures in AI data centres and for battery systems. Marine and rail electrification also adopt them. Investment in AI infrastructure is accelerating demand. Demand is strong.

•Safety, Equipment Protection and Digital Control Microsecond interruption limits fault current and arc flash energy, improving safety for personnel and reducing damage to equipment such as power electronics and batteries. Solid-state breakers can be controlled digitally, with programmable trip curves, remote switching, metering and diagnostics in one device, supporting smart buildings and energy management. They also have no contact wear, which reduces maintenance. Integration with energy management systems adds value. Growth is solid.

Challenges •Higher Cost, Conduction Losses and Heat Management Semiconductor breakers cost significantly more than mechanical breakers of similar rating, and semiconductors have conduction losses in normal operation that generate heat and require cooling, which affects efficiency and size. Wide-bandgap devices such as silicon carbide reduce losses but remain relatively expensive. Hybrid designs reduce losses but add complexity. Customers must justify higher costs with safety, efficiency or system benefits. Price reduction is needed for mass adoption. Adoption is selective.



•Standards, Certification and Galvanic Isolation Requirements Electrical codes and standards were developed around mechanical breakers, and certification of solid-state breakers for different applications and markets can be slow and complex. Many applications require galvanic isolation for safety, which may need an additional mechanical isolator. Utilities and building owners may be cautious about new protection technology without long field records. Coordination with existing protection schemes needs study. Standards are evolving. Trust takes time.

Trends •Silicon Carbide and Gallium Nitride Devices Lowering Losses Advances in silicon carbide MOSFETs and JFETs, and in gallium nitride devices for lower voltages, are reducing conduction losses, improving switching speed and increasing power density, making solid-state breakers more practical. Semiconductor makers are partnering directly with breaker designers, as in SolarEdge's work with Infineon. Packaging and cooling innovations reduce size. Device prices are falling with volume growth from electric vehicles. Performance is improving. Adoption is rising.

•Integration into Smart Panels, DC Microgrids and Data Centre Power Systems Solid-state breakers are being integrated into smart electrical panels, DC microgrids, battery storage systems and data centre power distribution alongside solid-state transformers, providing programmable protection and energy monitoring. Environmental product declarations, such as ABB's for SACE Infinitus, support sustainability reporting. Data centre operators and hyperscalers are developing new reference architectures. Collaborations between power, semiconductor and computing companies are increasing. Interest is growing.

Low voltage breakers lead because early adoption is in buildings, data centre racks, storage and marine systems below 1,500 volts, while medium voltage devices grow fastest with DC grids and solid-state transformers. Low voltage solid-state circuit breakers, generally up to 1,000 volts AC or 1,500 volts DC, are the largest segment because most commercial products and early deployments are in data centre power distribution, battery energy storage, electric vehicle charging, marine and rail systems, industrial DC networks and smart buildings. These products benefit directly from silicon carbide device improvements and growing DC architectures. Medium voltage solid-state and hybrid breakers, above 1,500 volts DC or 1 kilovolt AC, are the fastest growing segment from a small base as medium voltage DC distribution, solid-state transformers, DC microgrids and renewable collection systems develop. High voltage DC hybrid breakers are used for multi-terminal HVDC grids and are at early stages of deployment. Through 2031, medium voltage devices are expected to grow fastest.

DC breakers lead because solid-state technology solves the difficulty of interrupting DC faults, while AC solid-state breakers grow in smart buildings and sensitive loads. DC solid-state circuit breakers are the largest segment because mechanical breakers struggle to interrupt DC faults quickly and safely, and DC systems are expanding in data centres, battery storage, electric vehicle charging, photovoltaic systems, ships, rail and microgrids. The move toward 800 volt DC architectures in AI data centres is a strong driver. AC solid-state breakers are used in smart panels, buildings, critical facilities and sensitive industrial loads where fast protection, digital control and metering add value. Through 2031, DC breakers are expected to remain the largest and fastest growing segment.

Data centres and industrial applications lead early adoption, while energy storage, electric vehicle charging and transportation grow quickly with electrification. Data centres and IT power are the largest and fastest growing application because high-density AI computing requires efficient power distribution and fast fault protection, and new 800 volt DC architectures create a clear role for solid-state breakers. Industrial and commercial power distribution, including smart buildings and critical facilities, uses solid-state breakers for safety, control and metering. Energy storage and renewable systems use DC protection for batteries and photovoltaic arrays. Electric vehicle charging infrastructure requires fast DC protection. Marine, rail and aerospace electrification adopt solid-state breakers for compact and reliable DC protection. Microgrids and utilities use them in DC links and advanced distribution. Through 2031, data centres, storage and electric vehicle charging are expected to grow fastest.

Hybrid and fully solid-state designs both grow, with fully solid-state leading in ultra-fast DC protection and hybrid designs gaining in higher current applications where losses matter. Fully solid-state breakers, which use only semiconductors in the current path, are the leading type in low voltage DC applications where ultra-fast interruption and digital control are most valuable, and they are offered by several suppliers. Hybrid breakers combine a mechanical contact for low losses during normal conduction with a semiconductor path that takes over during interruption, offering a balance of speed and efficiency for higher current and medium voltage applications. Hybrid designs are favoured for HVDC and some medium voltage DC uses. Through 2031, both types are expected to grow, with hybrid designs gaining share in high-current and medium voltage applications.

North America leads solid-state circuit breakers through AI data centre investment and early commercial suppliers, Europe follows with marine, rail and industrial DC applications and strong engineering firms, and Asia-Pacific grows fastest through semiconductor manufacturing, electric vehicles and storage. North America is the leading region, driven by massive investment in AI data centres, the development of 800 volt DC architectures, battery storage growth and early commercial suppliers. NVIDIA's announcement in May 2025 of a move toward 800 volt DC power for future AI data centres, together with power and semiconductor partners, created strong demand for solid-state protection. Start-ups and established companies are developing and certifying products, and semiconductor makers such as Wolfspeed, onsemi and Power Integrations are supplying devices. Smart panels for buildings and homes are an emerging use. Standards bodies are developing requirements for DC protection. By 2031, growth is expected from data centres, energy storage, electric vehicle charging and smart buildings.

Europe is a major region with strong engineering companies and early adoption in marine, rail and industrial DC applications. ABB's SACE Infinitus, made in Italy, was the first solid-state circuit breaker certified to IEC 60947-2 and in July 2026 became the first with an externally verified Type III environmental product declaration. Siemens, Schneider Electric, Infineon and STMicroelectronics are active in power electronics and protection. Europe's marine electrification, rail systems, offshore platforms and industrial microgrids use DC protection. Research on multi-terminal HVDC grids for North Sea offshore wind drives interest in HVDC hybrid breakers. By 2031, growth is expected from marine, rail, industrial DC, data centres and HVDC grids.

Asia-Pacific is the fastest growing region, supported by large semiconductor manufacturing, electric vehicle production, battery storage deployment and data centre growth. China is developing solid-state and hybrid breakers for DC distribution, rail, storage and HVDC grids, with strong domestic power electronics companies. Japan and South Korea have advanced power semiconductor and electrical equipment industries and are developing DC protection for data centres, rail and ships. Taiwan's semiconductor and server industries are central to data centre supply chains. India is building data centres and storage capacity. By 2031, the region is expected to show the highest growth.

Latin America is an emerging region for solid-state circuit breakers, with early adoption in data centres in Brazil, Mexico and Chile, battery storage projects, mining electrification and industrial DC systems. Most products are imported from North America, Europe and Asia. Barriers include cost, awareness, standards and limited local technical support. By 2031, growth is expected from data centres, storage and mining electrification.

The Middle East and Africa are emerging regions. Gulf countries are investing heavily in AI data centres, battery storage and smart cities, which could drive adoption of advanced DC protection, and marine and oil and gas facilities may adopt solid-state breakers for safety. South Africa and other African markets have early use in storage and telecom power. Barriers include cost and limited local expertise. By 2031, growth is expected from Gulf data centre and storage projects.

September 2026 – SolarEdge and Infineon extend collaboration on solid-state breakers for 800 volt DC data centres: SolarEdge leads breaker design and Infineon supplies silicon carbide JFET technology for devices designed to interrupt faults within a few microseconds without mechanical contacts.

July 2026 – ABB publishes first verified environmental product declaration for a solid-state circuit breaker: The Type III declaration covers the SACE Infinitus family, rated up to 2,500 amperes at 1,000 volts DC, which interrupts faults in under 25 microseconds.

November 2025 – SolarEdge announces solid-state transformer platform for data centres: The platform is designed to convert medium voltage power directly to 800 to 1,500 volts DC at high efficiency, creating a need for fast solid-state protection downstream.

May 2025 – NVIDIA announces move toward 800 volt DC power for AI data centres: The company outlined an 800 volt DC architecture with semiconductor and power system partners, driving development of solid-state circuit breakers for high-density computing.


Considered in this report
• Historic Year: 2020
• Base Year: 2025
• Estimated Year: 2026
• Forecast Year: 2031

Aspects covered in this report
• Global Solid-State Circuit Breakers Market with its segments and regional outlook
• Various drivers and challenges
• Ongoing trends and developments
• Key developments and regulatory milestones

By Voltage
• •Low voltage (up to 1,500 volts DC)
• •Medium voltage
• •High voltage DC

By Current Type
• •DC solid-state circuit breakers
• •AC solid-state circuit breakers

By Application
• •Data centres and IT power
• •Industrial and commercial power distribution
• •Energy storage and renewable systems
• •Electric vehicle charging
• •Marine, rail and aerospace
• •Microgrids and utilities

By Type
• •Fully solid-state
• •Hybrid