English
The working principle of the ADH300DE DC contactor is based on electromagnetic effects. When the rated voltage (10-36V DC) is applied to the coil (terminals A1/A2), the coil generates electromagnetic force, which drives the internal
moving iron core to engage with the stationary iron core, thereby driving the main contact (1NO normally open contact) to close and connect the main circuit. When the coil loses power, the electromagnetic force disappears. Under the
action of the reaction spring (or permanent magnetic force), the moving iron core returns, and the main contact quickly disconnects, cutting off the circuit. The built-in inert gas (mainly nitrogen) can quickly cool and extinguish the arc
when the contact is disconnected, protecting the contact. Some models (such as coil types E, W, D) also have built-in energy-saving circuits to reduce the power consumption of the coil after being pulled in.
The quality and reliability of the ADH300DE DC contactor come from its multiple guarantees: it is sealed with epoxy resin and filled with inert gas to fundamentally prevent arc leakage and contact oxidation, ensuring high safety (no fire, no explosion) and stable low contact resistance. The product has excellent electrical lifespan (such as 1000VDC/300A on-off 10000 times) and strong overload tolerance (such as withstanding 6000A instantaneous current), with a mechanical lifespan of up to 200000 times. Its working temperature range is wide (-40 ℃~85 ℃), and it can resist vibration and impact, adapting to harsh environments. This product has passed safety certifications such as CE, CCC, TUV, etc., and complies with multiple international and national electrical standards, providing reliable quality endorsement for applications.
High safety sealing design: High strength epoxy resin sealing ensures that the product has no risk of arc leakage throughout its entire life cycle, achieving a high safety level of no fire or explosion.
Excellent contact protection: Internally filled with inert gas, significantly improving arc extinguishing ability, fundamentally preventing contact oxidation and burnout, ensuring long-term stable low contact resistance and high electrical durability.
Powerful current carrying and breaking capacity: Supports long-term continuous current carrying of 300A, with a maximum breaking capacity of 2000A (320VDC), capable of withstanding instantaneous short-circuit currents up to 6000A, and high reliability.
High insulation and withstand voltage reliability: The insulation resistance reaches 100M Ω, and the withstand voltage between the contact and the coil is 4kV, providing excellent electrical isolation and safety assurance.
Flexible installation and low power consumption: Provides two installation methods, bottom and side, and can choose whether to include auxiliary contacts (1NO/1NC) to adapt to different spatial layouts. The starting power of the coil is ≤ 40W, and the holding power consumption is ≤ 3.5W (energy-saving type), with low energy consumption.
Comprehensive environmental tolerance: wide temperature range, vibration resistance, impact resistance, moisture and heat resistance, capable of stable operation in harsh industrial environments.
Complete compliance and certification: Meets multiple international and domestic electrical standards and environmental directives, and has obtained key market access certifications such as CE, CCC, TUV, etc., facilitating global promotion of customer products.
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