KEYONG KLD (V4) General Purpose Automotive Power Relay is designed for reliable 30A–60A high-current switching in automotive electronics, lamp accessories, and industrial control systems. Featuring compact construction, dustproof protection, and flexible PC pin or quick connect mounting options, this product delivers stable performance, long service life, and easy installation for car lighting, power circuits, and heavy-load applications. Manufactured by NINGBO KEYONG JINGSHENG ELECTRICAL APPLIANCE CO., LTD., a professional China automotive relay manufacturer and supplier, the KLD (V4) offers a cost-effective and dependable relay solution for OEM and aftermarket requirements.
The KEYONG General Purpose Automotive Power Relay is designed for reliable current switching in various automotive and electrical applications. With optimized internal contact structure and precision manufacturing, the relay maintains stable conductivity and low contact resistance during continuous operation.
●Stable switching capability for automotive electrical systems
●Reliable performance under vibration and temperature fluctuations
●Low contact resistance for improved electrical efficiency
●Long mechanical and electrical service life
●Suitable for continuous heavy-load operation
Automotive relays are frequently exposed to vibration, dust, humidity, and temperature changes. KEYONG relays are manufactured using high-quality raw materials and precise assembly processes to ensure stable operation in demanding environments.
Structural Benefits
●High-quality silver alloy contacts
●Heat-resistant housing materials
●Dustproof and sealed structure options available
●Excellent anti-vibration capability
●Compact design for easy installation
Our factory strictly follows ISO 9001:2015 quality management standards and utilizes automated assembly and inspection equipment, including industrial vision inspection systems, ultrasonic cleaning machines, winding and soldering machines, parameter adjustment equipment, and fully automated testing lines.
| Contact arrangment | A/B/C |
| Voltage drop(at 10A) | ≤200mV |
| Contact material | Silver alloy:AgSnO₂ In₂O₃、AgSnO₂、AgNi |
| Contact rating | 30A/40A/60A 14VDC |
| Max switching voltage | See“Load limit curve” |
| Max switching current | 60A(Resistive 14VDC) |
| Min contact load | 1A 6VDC |
| Electrical endurance (Frequency:900 ops/h) | 1×10⁵ops |
| Mechanical endurance(Frequency:18000 ops/h) | 1×10⁷ops |
| Power consumption(W) | 1.6W | 1.8W | 1.6W | 1.8W | 1.8W | 2.0W |
| Nominal voltage(VDC) | 12 | 12 | 24 | 24 | 24 | 24 |
| Coil resistance(Q±10%) | 90 | 90 | 360 | 360 | 320 | 320 |
| Parallel resistance(Ω) |
|
680 |
|
2700 |
|
2700 |
| Pick-up voltage(Max) | 65%(Nominal voltage) | |||||
| Drop-out voltage(Min) | 10%(Nominal voltage) | |||||
| Max allowable overdrive voltage(VDC) | 150%(Nominal voltage) | |||||
| Insulation level | Class B/Class F | |
| Insulation resistance | 100MΩ(500VDC) | |
| Dielectric strength(Leakage current 1mA) | Dielectric strength(Between coil and contacts) | 500VAC/minute |
| Dielectric strength(Between open contacts) | 500VAC/minute | |
| Operate time(at nominal voltage) | ≤10ms | |
| Release time(without diode)(at nominal voltage) | ≤10ms | |
| Humidity | 5%～85%RH | |
| Ambient temperature | -40℃~+125℃ | |
| Vibration resistance | 5Hz～22.3Hz 10mm/Double amplitude | |
| 22.3Hz~500Hz 98m/s² | ||
| Shock resistance | 294m/s² | |
| Weight | Approx 36g | |
| Construction | Dustproof | |
The KEYONG General Purpose Automotive Power Relay is widely used in different industries and electrical systems requiring dependable switching control.
●Automotive Electronics
●Automotive lighting systems
●Cooling fan control
●Fuel pump systems
●Horn systems
●Air conditioning systems
●Battery management systems
●Wiper control systems
Industrial and Smart Control Systems
●Industrial automation equipment
●Communication devices
●Security and surveillance systems
●Smart control devices
●Household appliances
●Renewable Energy Charging and Storage systems
As a trusted automotive relay supplier in China, KEYONG works closely with OEM manufacturers and distributors worldwide to provide stable relay solutions for multiple industries.
Quality stability is a critical concern for automotive relay buyers. KEYONG strictly controls every manufacturing stage, from raw material inspection to final product testing.
Our quality control process includes:
●Coil resistance testing
●Contact performance testing
●Voltage and current testing
●Mechanical life testing
●Electrical life testing
●Temperature resistance testing
●Appearance and dimensional inspection
Automated testing equipment helps ensure consistent product performance and reliable long-term operation.
1.What is a General Purpose Automotive Power Relay used for?
A General Purpose Automotive Power Relay is mainly used to control high-current electrical circuits through low-current signals. It is widely applied in automotive electronics, lighting systems, cooling fans, air conditioning systems, industrial automation equipment, and power control systems.
2.Why is relay quality important in automotive applications?
Automotive electrical systems often operate under vibration, temperature fluctuation, and heavy electrical loads. A high-quality automotive relay helps ensure stable current switching, protects electrical components, and improves overall system reliability and service life.
3.Can KEYONG provide OEM automotive relay solutions?
Yes. KEYONG supports OEM and customized relay solutions according to customer specifications, including voltage requirements, terminal structures, contact forms, mounting methods, and packaging.
4.What certifications do KEYONG relays have?
KEYONG relay products have obtained UL, TUV, CQC, CE, and RoHS certifications and are manufactured under the ISO 9001:2015 quality management system.
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350 Renmin North Road, Hengxi Town, Yinzhou District, Ningbo City, Zhejiang Province, China
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