三英社製作所 Company Profile

Continue to be a power distribution technology that responds to societal challenges.

San-ei Corporation is a company primarily engaged in the design, manufacturing, and sales of power distribution equipment. We are developing our business in the field of power distribution for electricity supply. We provide technologies and products for safely and stably supplying electricity, including underground power lines for landscape and disaster prevention, receiving equipment that supplies high-voltage power to factories, buildings, and condominiums, standalone operation detection devices that allow surplus power from distributed power sources to flow into the power company grid, and high-voltage circuit breakers that instantly cut off power supply in case of faults.