Dongfeng Kinland truck parts Relay assembly 3735090-C0101 for sale

Built to manage the high-power demands of Dongfeng Kinland’s commercial applications (e.g., long-haul transport, construction site operations), the relay features silver-plated copper contacts (contact resistance ≤45mΩ) that support a continuous switching current of 45A and peak current of 65A. This capacity easily handles power-hungry devices such as the windshield wiper motor (15A), auxiliary lighting (20A), and air compressor (30A) without contact overheating. The coil is wound with high-temperature enameled copper wire (180°C class insulation) and calibrated to 82±3Ω resistance, ensuring reliable activation with minimal power draw (146mA at 12V). Testing confirms the relay withstands 120,000+ switching cycles (equivalent to 6 years of average use) with no contact welding or arcing—critical for preventing unexpected electrical failures in remote mining or rural transport scenarios

Engineered to endure the harsh conditions of truck operation—road vibration, dust, and temperature extremes—the relay assembly achieves an IP65 protection rating. The housing is made of flame-retardant PBT plastic (UL94 V0 grade) with a nitrile rubber gasket, blocking dust intrusion and resisting water splashes from road spray or heavy rain. It operates reliably across a wide temperature range (-40°C to 90°C), maintaining performance in frigid northern winters or underhood heat (up to 85°C). Internal components are potted with epoxy resin to dampen vibration (tested to 10–2000Hz, 25g acceleration), preventing loose connections or component damage when driving over unpaved roads or construction debris. This durability makes it ideal for Kinland trucks operating in dusty mining zones or rainy coastal transport routes

To safeguard the Kinland’s electrical system from damage, the relay integrates comprehensive protection features. A transient voltage suppressor (TVS diode) suppresses voltage spikes up to 120V—caused by alternator fluctuations or starter disconnection—preventing damage to sensitive ECU components. The contact system includes a magnetic blowout coil that extinguishes arcs during switching, reducing contact wear by 35% and extending service life compared to standard relays. A thermal fuse in the coil circuit activates at 125°C, preventing overheating due to prolonged activation (e.g., stuck switches). These features meet ISO 7637-2 automotive electrical standards and Dongfeng’s strict safety protocols, ensuring the relay operates safely even in abnormal electrical conditions

Designed for efficient replacement by fleet technicians, the relay features a user-friendly plug-and-play design. The 5-pin connector mates with the Kinland’s factory wiring harness without cutting or soldering, and installation takes 8–10 minutes with a standard Phillips screwdriver. The mounting tab includes a pre-drilled 6mm hole that aligns with the relay box bracket, and the package includes a stainless steel M6×12mm bolt with a lock washer (resistant to vibration-induced loosening). Each unit undergoes 100% electrical testing (contact resistance, coil voltage, switching response) and environmental simulation checks (temperature cycling, humidity exposure). Backed by a 15-month warranty against defects (e.g., contact failure, coil burnout, housing cracking), it ensures minimal downtime for Kinland fleets relying on continuous operation