GS Yuasa Corporation (Tokyo Stock Exchange: 6674; “GS Yuasa”) today announced the launch of the wall-mounted 10 kVA power conditioner Three-phase output LINE BACK αVI (model: LBSL-10-T3C), certified by JET*1 and ideal for medium-scale, self-consumption photovoltaic (PV) installations. Shipments will begin in July 2026.

The Three-phase out put LINE BACK αVI is a power conditioner that offers an industry-leading maximum conversion efficiency of 98.1 % together with outstanding durability. By maximizing power output, reducing CO₂ emissions, and operating with low noise, it meets diverse customer needs while contributing to harmonious coexistence with local communities.

The new model is upward-compatible with the previous units*2, allowing seamless replacement for customers already using power conditioners from the Three-phase output LINE BACK α series.
While inheriting the proven reliability of conventional models, it delivers enhanced functionality and easier maintenance.
In addition, all production is carried out at our domestic facilities, ensuring a stable supply and comprehensive after-sales support for our customers.

Since 1993, GS Yuasa has been manufacturing and selling power conditioners for photovoltaic systems and was the first company in Japan to obtain JET certification. In addition to this product, we offer a broad lineup that includes energy storage systems.
Going forward, we will continue to expand the use of renewable energy and help achieve carbon neutrality by supplying high-quality, grid-connected power conditioners.

1. JET Certified and Compliant with Domestic Standards and Technical Requirements
• JET certification*1
• CISPR 11 (Edition 6.2)*3
• Standard Specifications for Public Building Works (MLIT Building & Repairs Specification)
• Parallel-operation allowable-frequency / flicker countermeasure STEP 3.2*4
• JC STAR program*5

２．Industry-leading maximum conversion efficiency
Full SiC-FETs*6 are used in the main conversion circuit, achieving 96.0 % conversion efficiency and a peak efficiency of 98.1 %—among the highest in the industry.
Achieves a fanless, maintenance-free, and low-noise design through higher efficiency.

３．Best-in-class ingress protection and salt-corrosion resistance
The fully sealed enclosure delivers superior environmental durability and meets the IP66*7 rating for dust- and water-proof performance.
Suitable for outdoor installation in salt-affected coastal areas: up to 200 m from the shoreline on open seas, and up to 500 m on Okinawa and other remote islands, provided the unit is not exposed to direct sea spray.

４． Enhanced maintenance and serviceability
An LCD panel and status LEDs let operators confirm operating conditions even with the door closed. Because the enclosure is secured with catch clip instead of conventional bolts, and the internal protection cover has been redesigned, installation work and routine maintenance are significantly easier than on standard salt-resistant power conditioners.

５．Compatible with high-output photovoltaic modules
The built-in combiner now accepts a maximum DC input current of 45 A per string*8 triple the previous 15 A—allowing direct connection of today’s higher-power solar panels.

６． Built-in standalone operation
An internal single-phase, two-wire 101 V / 3.0 kVA backup circuit lets the PV array keep supplying designated loads—such as lighting and outlets—during a grid outage. The unit can switch to standalone mode automatically or manually.

*1　Third-party performance certification by the Japan Electrical Safety & Environment Technology Laboratories (JET).
*2　For example: LBSF-10-T3, LBSG-10-T3, LBSJ-10-T3C, LBSK-10-T3C, etc.
*3　Complies with radio-interference regulations; has passed radiated-EMI tests that meet the applicable standard.
*4　Conforms to the revised technical requirements for grid interconnection.
*5　Satisfies cybersecurity requirements for distributed power sources.
*6　Uses low-loss switching devices fabricated from silicon-carbide (SiC) compound semiconductor material.
*7　IP rating: completely dust-tight and protected against powerful water jets from any direction.
*8　Additional bus-bar installation must be performed on site.
*9　Requires an optional network interface card (NIC), sold separately.