APT

Founded in 1993, APT derives its name from the initials of Advanced, Perfect, and Top, reflecting the company's commitment to innovation, quality, and excellence. As a leading brand in China's low-voltage control electrical industry, APT became a wholly owned subsidiary of Siemens in August 2008. While maintaining its independent brand identity and sales network, the company has benefited from Siemens’ global resources, significantly enhancing its product quality and technological capabilities.
With more than three decades of industry experience, APT has established a comprehensive product portfolio covering:Push buttons、Indicator lights、Selector switches、Relays、Control boxes、Current transformers、Limit switches、Other key low-voltage control components.
Among its flagship products, the LA39 Series Push Buttons are known for their corrosion resistance and vibration durability, making them ideal for demanding industrial environments. The PB3 Series Quick-Mount Push Buttons reduce installation time by up to 70%, making them particularly suitable for high-density applications such as elevators and metro systems.
All APT products are manufactured according to Siemens’ stringent quality standards and have obtained multiple international certifications, delivering performance that meets global industry requirements.
APT products are widely used in sectors including: Renewable energy、Rail transportation、Logistics and warehousing、Machine tools and industrial automation.
The company's solutions have been deployed in numerous landmark national projects, including: Qinshan Nuclear Power Plant、Three Gorges Hydropower Station、CRH “Fuxing” high-speed trains、Shenzhou 5 spacecraft.
In renewable energy applications, APT components provide reliable control for solar and energy storage systems. In rail transportation, their durability and reliability help ensure the safe operation of high-speed rail and metro networks under challenging environmental conditions.
Today, APT combines Siemens’ global expertise with its own long-standing industry experience, continuing to deliver high-quality industrial automation solutions while demonstrating the strength and innovation of China's low-voltage electrical manufacturing sector.

Web：https://www.si-apt.com/