APT

Founded in 1993, APT is a world-leading manufacturer of low-voltage control appliances, focusing on the R&D and production of industrial automation components such as buttons, signal lights, and relays. In 2008, APT was wholly acquired by the German Siemens Group and became an independent sub-brand of its Digital Industrial Group, but still retained the brand name and core R&D team.

Our products

APT

APT focuses on the secondary circuit of industrial control, and its products cover the following directions:
Low-voltage control devices: including buttons (such as PB3 quick-install buttons), signal lights, transfer switches, relays (such as xR series IP65 high protection type), etc., which are known for their high mechanical life (up to tens of millions of presses) and fast response.
Power equipment: Develop power cable plugs, cold shrink terminal series products, and large-ratio protection-level current transformers (up to 8000A/5A), which are used in harsh scenarios such as nuclear power and thermal power.
Railway special equipment: Provide key components such as copper terminal blocks and copper-aluminum transition terminal clamps for high-speed rail/EMUs.
Highlights of technological innovation:
Quick installation design: For example, the PB3 series buttons support one-handed installation, saving more than 50% of working hours.
High protection performance: The HR series relays adopt IP65 protection structure and can operate stably in dust and corrosive gas environments.
Digital integration: Some products integrate laser engraving and status feedback functions, supporting seamless connection with Siemens automation systems.