WG9716582301+013/1 40A Changeover Relay for HOWO Trucks

The WG9716582301+013/1 40A Changeover Relay is a critical electrical component specifically engineered for HOWO heavy-duty trucks. This OEM-grade relay ensures reliable switching between multiple circuits in demanding applications, providing durable performance even under extreme vibration and temperature variations. Manufactured with automotive-grade materials, this 40-amp rated relay features corrosion-resistant terminals and a compact design that fits seamlessly into HOWO truck electrical systems. Its maintenance-free operation and sealed construction prevent dust and moisture ingress, extending service life while minimizing downtime for China’s leading commercial vehicles.

Optimized for HOWO truck electrical subsystems, this relay maintains stable current flow to critical vehicle functions including lighting circuits, auxiliary equipment, and control modules. The double-throw switching mechanism allows operators to safely alternate power sources without interrupting essential operations. Engineered exclusively for commercial vehicle applications, the WG9716582301+013/1 relay withstands 12/24V fluctuations common in heavy machinery electrical systems. Its vibration-proof design incorporates shock-absorbing mounts that prevent terminal loosening during off-road operations, ensuring continuous connectivity throughout the relay’s operational lifecycle. The precisely calibrated electromagnetic coil delivers rapid switching cycles without arcing or contact welding, protecting sensitive electronic control units in modern HOWO truck cabins.

Technical Specifications

• Current Rating: 40A resistive load
• OEM Part Number: WG9716582301+013/1
• Voltage Compatibility: 12VDC/24VDC systems
• Contact Configuration: SPDT (Single Pole Double Throw)
• Terminal Type: Standard automotive blade connectors
• Operating Temperature: -40¡ãC to +105¡ãC
• Ingress Protection: IP67 rated
• Contact Material: Silver-alloy for corrosion resistance

The specialized construction includes robust copper winding that generates consistent electromagnetic force without power drain concerns. An integrated diode protects against voltage spikes when disconnecting inductive loads, preserving both the relay and connected HOWO truck components. Installation requires no specialized tools as the compact unit mounts directly to standard automotive relay panels using the universal mounting bracket. Technicians appreciate the clearly labeled terminal layout with color-coded wiring indicators that eliminate connection errors during replacement procedures. The WG9716582301+013/1 40A relay has undergone extensive validation testing to exceed OEM specifications for vibration endurance, thermal cycling, and humidity exposure.

Reliability metrics demonstrate over 100,000 electrical cycles without performance degradation under simulated highway and construction site conditions. This reliability translates directly into reduced workshop visits and lower total ownership costs for HOWO truck fleets. The relay’s copper-based conduction path maintains stable resistance values throughout operational extremes, preventing voltage drop issues that compromise lighting output or accessory functionality. When properly installed in accordance with HOWO electrical schematics, the 40A Changeover Relay forms a maintenance-free component requiring no periodic adjustment or cleaning despite exposure to road contaminants.

Application & Compatibility

Designed as a direct replacement part for HOWO A7, T7, and T5 series trucks manufactured between 2014-present, this relay coordinates between primary and secondary power circuits when operating snowplows, dump mechanisms, hydraulic lifts, and auxiliary lighting systems. The sealed housing maintains performance integrity when mounted in wheel well compartments or undercarriage positions vulnerable to water and debris impact. Compatibility extends to all HOWO models utilizing 40-amp standard automotive relay sockets including mining, construction, and long-haul configurations. Fleet managers implement this component for critical applications including engine brake controls, transmission interlocks, and trailer connection systems where circuit redundancy and fail-safe operation are operational necessities.

Electrical integration proves straightforward using existing wiring harness connectors without modification requirements. The universal blade terminal configuration matches factory harness plugs for tool-free installation in original equipment locations documented in HOWO technical manuals. During diagnostic procedures, the relay’s visible status indicators allow technicians to quickly verify activation state without specialized testing equipment. Should failure occur despite stringent manufacturing controls, the component incorporates short-circuit protection that isolates electrical faults without endangering upstream control modules or fusible links.

Performance Advantages

Maintaining the WG9716582301+013/1 40A Changeover Relay delivers measurable benefits for commercial vehicle operators. Energy efficiency improvements derive from minimized voltage drop across contact points that often contributes to alternator overwork in aging electrical systems. The precisely calibrated electromagnetic action produces swift switching transitions without contact bounce that damages sensitive electronic components. Operational improvements include consistent performance during temperature extremes ranging from Arctic operations to desert mining applications that challenge conventional automotive relays.

Testing confirms superior vibration resistance exceeding MIL-STD-202G method 204D standards for commercial vehicles. This resilience directly addresses the leading cause of relay failure in heavy equipment by securing internal components against the harmonic vibrations inherent in diesel engine operations. Under continuous operation testing, contact temperature rise remains below 30¡ãC above ambient at maximum rated load conditions. This thermal management ensures stable contact resistance values throughout demanding duty cycles without contact surface degradation or welding failures.