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ECI, CI-tronic Electronic Contactors - DANFOSS INDUSTRIAL AUTOMATION
Electronic contactors, also known as semiconductor contactors or solid-state relays (SSRs) for high-duty cycling, are non-mechanical switching devices designed for resistive and inductive loads. The Danfoss ECI and CI-tronic series represent a category of electronic contactors that utilize thyristor or triac technology to switch AC loads without...
Electronic contactors, also known as semiconductor contactors or solid-state relays (SSRs) for high-duty cycling, are non-mechanical switching devices designed for resistive and inductive loads. The Danfoss ECI and CI-tronic series represent a category of electronic contactors that utilize thyristor or triac technology to switch AC loads without moving parts, offering virtually unlimited electrical life. These devices are typically rated for currents from a few amps up to 125 A, with operating voltages up to 600 VAC. Key technical parameters include zero-crossing switching for reduced EMI, integrated heat sinks for thermal management, and control inputs compatible with 24 VDC or 230 VAC. They are often available in single-phase (1P) or three-phase (3P) configurations, with optional integrated overvoltage protection and diagnostic outputs.
These electronic contactors are primarily deployed in industrial automation environments where frequent switching (up to millions of operations) is required, such as in plastic injection molding machines, packaging lines, HVAC systems, and conveyor controls. They are also found in process heating applications, including ovens, furnaces, and heat tracing systems, where precise temperature control demands rapid and silent switching. Their solid-state design makes them ideal for clean rooms, food processing plants, and other areas where mechanical wear or noise from traditional electromechanical contactors is unacceptable. Additionally, they are used in lighting control systems for stadiums and industrial halls, where high inrush currents must be managed without contact welding.
The main subcategories within this family include the Danfoss ECI series (e.g., ECI-10, ECI-25, ECI-40, ECI-63) and the CI-tronic series (e.g., CI-10, CI-25, CI-40, CI-63). The article code structure typically follows the pattern: ECI-XX-XXX, where XX indicates the rated current (e.g., 10, 25, 40, 63) and XXX denotes the control voltage (e.g., 230 for 230 VAC, 024 for 24 VDC). For the CI-tronic series, codes like CI-10-230 or CI-25-024 are common. These products are available with optional features such as integrated overvoltage protection (e.g., ECI-10-230-OVP) or diagnostic outputs (e.g., ECI-25-024-DO). Accessories like mounting brackets and heat sink extensions are also listed under separate codes.
Partnering with Electric Automation Network ensures access to genuine Danfoss electronic contactors at competitive prices, with up to 65% discount compared to list prices. Our engineering team provides personalized technical support for selecting the correct model based on load type, switching frequency, and ambient temperature. We offer express worldwide shipping from our global warehouses, with real-time stock visibility and pricing on our multilingual portal. Each product includes detailed technical documentation, including datasheets, wiring diagrams, and thermal derating curves, ensuring seamless integration into your automation projects.
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