On the eve of the Chinese Lunar New Year, the final container shipment—power equipment exported to Southeast Asia—completed its entire logistics process and terminal delivery, marking the successful fulfillment of the project.

In January 2026, a critical component failure occurred in the switchgear core of a power user. The original internationally renowned brand high-voltage vacuum circuit breaker had been discontinued, leaving the user facing the high cost of complete switchgear replacement. Leveraging decades of technological expertise in VS1 vacuum circuit breakers, Tianan Electric provided a plug-and-play retrofit solution, enabling zero-modification replacement for the switchgear upgrade.

Customized Solution: VTD6-6/1250-30 Type Indoor High-Voltage AC Vacuum Circuit Breaker

The core equipment—the VTD6-6/1250-30 Type Indoor High-Voltage AC Vacuum Circuit Breaker—is independently developed and manufactured by Tianan Electric based on the mature and reliable VS1 vacuum circuit breaker platform. This high-voltage circuit breaker replacement solution was custom-engineered to strictly adhere to the installation dimensions and positioning parameters of the original model, achieving precise mechanical interface compatibility.

Distinct from simple circuit breaker replication, the technical teams from both parties engaged in multiple rounds of drawing confirmation and in-depth technical discussions to complete the customized design within the mature VS1 framework. The customer was able to achieve a "seamless replacement / plug-and-play" solution without any modifications to the existing high-voltage switchgear. In terms of installation dimensions and positioning methods, the solution was customized strictly according to the original circuit breaker's parameters. This approach went beyond simple dimensional replication—through multiple rounds of drawing confirmation and thorough communication, the technical teams achieved precise mechanical interface compatibility with the original circuit breaker within the proven VS1 framework. This meant the customer could directly roll the Tianan circuit breaker into the switchgear without any modifications, realizing a true "seamless replacement, plug-and-play" outcome.

The provision of this customized solution not only avoided complete switchgear replacement but also achieved cost savings of over 60%. In response to the customer’s urgent requirements, the company assigned dedicated personnel to ensure rapid delivery. Furthermore, the breaking capacity and mechanical life significantly surpassed those of the original brand circuit breaker.

About Tianan Electric

Tianan Electric has been deeply engaged in the R&D and manufacturing of power transmission and distribution equipment for decades, with its products widely used in power distribution systems both domestically and internationally. The company provides one-stop technical services, including power grid upgrade and power equipment retrofit solutions, supporting users in achieving digital and intelligent transformation and upgrading.