Dongfeng KInland truck parts Relay assembly 3735090-C0100 in stocked

Built to manage the high electrical loads of Dongfeng Kinland’s commercial applications (e.g., long-haul transport, construction site operations), the relay features a robust contact system with silver-plated copper contacts (contact resistance ≤50mΩ). It supports a maximum switching current of 40A (continuous) and 60A (peak), easily handling power demands from high-consumption devices like the electric fan, windshield wiper motor, and auxiliary lighting. The coil resistance is calibrated to 85±5Ω, ensuring reliable activation with minimal power draw (coil current: 140mA at 12V). Testing confirms the relay maintains stable performance through 100,000+ switching cycles (equivalent to 5 years of average use), with no contact welding or arcing—critical for preventing electrical system failures in remote operating areas

Engineered to withstand the harsh conditions of truck operation—including road vibration, dust, and temperature fluctuations—the relay assembly achieves an IP65 protection rating. The housing is made of flame-retardant PBT plastic (UL94 V0 rating) with a tight-sealing rubber gasket, blocking dust intrusion and resisting water splashes from road spray. It operates reliably across a wide temperature range (-40°C to 85°C), ensuring functionality in extreme cold (e.g., winter in northern China) or underhood heat. The internal components are potted with epoxy resin to dampen vibration (tested to 10–2000Hz, 20g acceleration), preventing loose connections or component damage during off-road or rough-road driving. These features make it ideal for Kinland trucks operating in construction zones, mining areas, or rural unpaved roads

To safeguard the Kinland’s electrical system from damage, the relay integrates multi-layer protection mechanisms. A built-in surge protector suppresses voltage spikes (up to 100V transient) caused by alternator fluctuations or starter motor disconnection, preventing damage to sensitive ECU components. The contact system includes a magnetic blowout feature that extinguishes arcs during switching, reducing contact wear and extending service life by 30% compared to standard relays. Additionally, the coil is protected by a thermal fuse that activates at 120°C, preventing overheating due to prolonged activation (e.g., stuck switches). These safety features meet ISO 7637-2 automotive electrical standards, ensuring compliance with Dongfeng’s strict safety protocols

Designed for easy installation by fleet technicians or repair shops, the relay features a user-friendly plug-and-play design. The 5-pin connector matches the Kinland’s factory wiring harness socket, requiring no cutting, soldering, or terminal crimping—installation takes less than 10 minutes with a standard screwdriver. The mounting tab includes a pre-drilled 6mm hole that aligns with the truck’s relay box bracket, and the package includes a stainless steel M6×12mm bolt with a lock washer to prevent loosening from vibration. Each unit undergoes 100% electrical performance testing (contact resistance, coil voltage, switching time) and environmental simulation checks, backed by a 12-month warranty against defects (e.g., contact failure, coil burnout, housing cracking). This ensures minimal downtime for Kinland fleets when replacing faulty relays