Chengdu Suchen Environmental Protection Materials Co., Ltd. is a diversified group company established in 2010, located in the Qingbaijiang District of Chengdu. For over a decade, we have dedicated ourselves to supplying top-tier solutions in three main business sectors: plasma cutting and welding consumables, laser cutting and welding consumables, and our flagship product range of high-voltage DC relays. Our primary sales target is the international market, serving global industrial, automotive, and clean energy partners with high-performance components that excel under extreme operating environments.
With the dramatic shift towards global electrification, high-voltage DC (HVDC) relays have emerged as safety-critical infrastructure components. Suchen has positioned itself as an industry leader, leveraging 14 years of advanced engineering experience to design and manufacture components that facilitate the safe control, routing, and isolation of high-power DC systems.
Modern decarbonization strategies are heavily reliant on high-voltage direct current systems. As voltage requirements scale up from conventional 400V platforms to the highly efficient 800V and 1000V+ levels in electric vehicles (EV) and utility-scale battery energy storage systems (BESS), the demand for fail-safe containment mechanisms has reached an all-time high. Suchen's engineering team has spearheaded research into these requirements, deploying state-of-the-art contact technologies that perform safely under harsh load switching cycles.
EV architecture requires relays capable of handling high inrush currents during pre-charging phases and safely isolating the traction battery pack from the inverter during thermal runaways or collisions.
Commercial and industrial energy storage containers operate at up to 1500V DC. Reliable relays ensure system-level isolation during grid fluctuations or system maintenance, preventing localized faults from cascading.
Superfast DC charging columns (CCS & MCS) demand relays with extremely low contact resistance. This minimizes power loss and limits heat generation during continuous 250A to 500A power delivery.
As a leader in the industry, Chengdu Suchen Environmental Protection Materials Co., Ltd. always adheres to the concept of "green sustainable development." In the process of product research, development, and production, we actively use environmentally friendly materials and advanced processes to ensure that our products meet international environmental standards, helping our customers achieve green production. We believe that only through a sustainable business model can we establish and grow in the global market.
To become a globally recognized supplier of environmental materials and new energy components, driving the green transformation of the global manufacturing industry. We serve multiple Fortune 500 companies and have received consistent praise from our clients.
We advocate core values of "integrity, cooperation, and win-win." Integrity is the cornerstone of enterprise development, establishing long-term relationships through joint efforts with our global customers, suppliers, and partners.
We uphold the service philosophy of "customer first," committed to promoting the development of green and environmentally friendly initiatives, and working hand in hand with global partners to create a better future.
Unlike Alternating Current (AC) systems where the voltage naturally crosses zero and extinguishes electrical arcs, Direct Current (DC) arcs do not have a natural zero-crossing. Consequently, interrupting high-voltage DC is infinitely more challenging. Suchen's technical roadmap leverages advanced physical engineering principles to tackle this problem directly.
Our relays employ state-of-the-art ceramic-to-metal brazing, establishing a hermetically sealed chamber filled with a high-pressure mix of Hydrogen (H2) and Nitrogen (N2). This pressurized environment provides superior dielectric withstand capability and rapidly cools the electrical arc, preventing contact erosion and minimizing oxidation.
We integrate high-energy NdFeB permanent magnets flanking the contact assembly. By exploiting the Lorentz force, the magnet field forces the high-energy arc to stretch, lengthening it instantly and driving it into the cooling channels of the arc-chutes. This guarantees fast suppression under both normal operations and emergency short-circuit isolation scenarios.
Suchen implements advanced AgSnO2 (Silver Tin Oxide) and AgInO2 contacts to prevent micro-welding under massive capacitive inrush loads. This metallurgical formula offers lower contact resistance and high mechanical durability, ensuring the relay operates within nominal temperatures during sustained heavy currents.
Operating in the Qingbaijiang District of Chengdu, Suchen benefits from one of China's most robust industrial, logistics, and raw material ecosystems. This strategic location facilitates immediate access to high-purity copper, ceramic bases, and advanced magnetic components, drastically lowering overheads and lead times.
Situated near the Chengdu International Railway Port, Suchen leverages the China-Europe Express Railway. This connects our factory directly to European logistics centers, bypassing congested sea routes and providing predictable, cost-efficient shipping timelines.
Our production processes follow IATF 16949-compliant manufacturing frameworks. Automated coil winding, vacuum welding, and computerized testing setups ensure consistency in contact resistance and pull-in/drop-out voltage benchmarks across thousands of units.
True to our name (Suchen Environmental Protection Materials), our plant is constructed to minimize waste, manage hazardous materials responsibly, and utilize energy-efficient machinery, complying with stringent national green initiatives.
In the electrical industry, reliability is synonymous with certification. All Suchen components, ranging from laser cutting consumables to high-voltage DC relays, are subjected to strict international certification regimes to guarantee their safety and performance profiles globally.
Our products and services have successfully achieved multiple authoritative international certifications. These credentials confirm that our production line operates at the peak of global technical standards, ensuring absolute safety for systems handling critical electricity loads.
SUCHEN
