For over fifteen years, ATO Relays has stood as a premier high-tech enterprise and customized manufacturing partner based in China. Specializing in advanced industrial automation, power distribution, and circuit protection, ATO combines modern production standards with robust technical management. Engineered to handle demanding operational environments, ATO offers full-lifecycle OEM and ODM customization—tailoring coil voltages, load capacities, contact configurations, and mounting designs directly from the factory floor to global clients.

At the core of ATO’s portfolio is its high-performance Electromagnetic Relay series, designed for versatile circuit conversion and safety protection. Available in DPDT, 3PDT (featuring high-conductivity silver alloy contacts with 11-pin bases), and 4PDT configurations housed in insulated transparent shells (operating between -25°C and 55°C), these units support coil voltages of 12V, 24V, 110V, and 220V/240V DC/AC. The series extends to high-density SPDT DIN rail mount slim relays for PLC automated systems and modular relay boards with 1NO+1NC or 2NO+2NC setups, delivering precise switching for industrial cabinets and control lines.

Complementing mechanical switching, ATO’s Solid State Relays (SSRs) provide contactless power control for high-frequency applications. The SSR range spans single-phase and 3-phase models (DC-to-AC and AC-to-AC) handling load currents from 10A to 120A, alongside heavy-duty industrial SSRs rating up to 350A (3-32V DC input to 24-480V AC output). Equipped with integrated heat sinks, DIN rail mounting, and silent semiconductor switching, these units eliminate arc interference, mechanical wear, and noise across intensive thermal and motor control applications.

With complete CE compliance and millions of in-stock components ready for immediate same-day dispatch, ATO serves system integrators and commercial buyers across North America, Europe, the Asia-Pacific region, and Latin America. From factory automation and sound equipment to smart power distribution networks, ATO Relays delivers factory-direct value, technical precision, and proven operational longevity.