The 50A Miniature High Power Relay from Ningbo Keyong Jingsheng Electrical Appliance Co., Ltd. is designed for reliable high-current switching in compact electronic and electrical systems. As a professional relay manufacturer in China, KEYONG has been focusing on electromagnetic relay development and production since 2012, serving global industries including automotive electronics, renewable energy storage, industrial automation, communication equipment, security systems, and household appliances.
With a factory area of 12,000 square meters and multiple automated production lines, KEYONG RELAY has built a stable manufacturing capacity exceeding 80 million pieces annually. The company integrates R&D, production, testing, and after-sales service, providing a complete relay solution for global customers seeking a reliable China manufacturer, supplier, and factory partner.
This 50A Miniature High Power Relay is engineered to deliver stable performance under high load conditions while maintaining a compact footprint suitable for PCB mounting and space-limited applications.
The KEYONG 50A Miniature High Power Relay is a compact electromagnetic switching device designed for high current control applications. It ensures stable switching performance, strong electrical endurance, and reliable insulation safety, making it suitable for demanding industrial and automotive environments.
It is widely used in systems requiring high-current load control, especially where space saving and long service life are critical.
●Compact miniature design suitable for high-density PCB layouts
●High current switching capability up to 50A resistive load
●Strong dielectric strength ensuring safe operation under high voltage conditions
●Low coil power consumption for energy-efficient system design
●Long mechanical and electrical lifespan for industrial reliability
●Stable contact performance with high resistance to arc and wear
●Suitable for automated assembly production lines
As a KEYONG relay manufacturer in China, strict quality control is applied at every production stage to ensure consistent performance.
| Contact arrangement | A,B,C |
| Contact resistance | ≤100mΩ(1A 6VDC) |
| Contact material | Silver alloy:AgSnO₂ In₂O₂、AgSnO₂、AgNi |
| Contact rating(Res.load) | 20A/30A/50A 250VAC,1-1/2HP240VAC,1HP 120VAC |
| Max switching voltage | 250VAC |
| Max switching current | 50A |
| Max switching power | 7500VA |
| Electrical endurance(Frequency:360 ops/h) | 1×10⁵ops/1×10⁴ops |
| Mechanical endurance(Frequency:18000 ops/h) | 1×10⁷ops |
| Power consumption(W) | 0.9W(L) | |||||||
| Nominal voltage(VDC) | 05 | 06 | 09 | 12 | 18 | 24 | 36 | 48 |
| Coil resistance(Ω±10%) | 27.7 | 40 | 90 | 160 | 360 | 640 | 1440 | 2560 |
| Pick-up voltage(Max) | 75%(Nominal voltage) | |||||||
| Drop-out voltage(Min) | 10%(Nominal voltage) | |||||||
| Max allowable overdrive voltage(VDC) | 130%(Nominal voltage) | |||||||
| Insulation level | B/F | |
| Insulation resistance | 1000MΩ(500VDC) | |
| Dielectric strength(Leakage current 1mA) | Between coil and contacts | 2000VAC/4000VAC 1min |
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Between open contacts | 1500VAC 1min |
| Operate time(at nominal voltage) | ≤15ms | |
| Release time(without diode)(at nominal voltage) | ≤10ms | |
| Humidity | 5%～85%RH | |
| Ambient temperature | -40℃~+85℃/+105℃ | |
| Shock resistance | Functional | 98m/s² |
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Destructive | 980m/s² |
| Vibration resistance(Double amplitude) | 10Hz~55Hz 1.5mm | |
| Weight | appro×309 | |
| Construction | Sealed Open | |
| Feature | Miniature 50A Relay | Conventional Relay |
|---|---|---|
| Size | Compact | Larger |
| Power Consumption | Lower | Higher |
| PCB Space | Saves space | Requires more |
| Heat Performance | Optimized | Standard |
Choosing KEYONG means working with a professional relay manufacturer and factory supplier in China with strong engineering and production capability.
●Over 10 years of relay manufacturing experience
●12000㎡ modern production facility
●Annual output exceeding 80 million relays
●Full range electromagnetic relay product portfolio
●Strong OEM and customization capability
●Stable global supply chain covering North America, Europe, Middle East, and Southeast Asia
KEYONG RELAY focuses on long-term cooperation with global distributors and OEM partners, providing consistent quality and reliable delivery.
All KEYONG products are manufactured under strict quality control systems and have passed multiple international certifications:
●UL Certification
●TUV Certification
●CQC Certification
●CE Certification
●RoHS Compliance
CE
CQC
RoHS
TUV
UL
Each relay undergoes multiple testing stages, including electrical performance testing, durability testing, and safety inspection before shipment.
1.What is the main application of a 50A miniature relay?
It is mainly used for high-current switching in automotive systems, industrial automation, and energy equipment where compact size and high load capacity are required.
2.Can this relay be used in renewable energy systems?
Yes, it is widely used in new energy charging systems, solar inverters, and energy storage applications due to its stable high-current performance.
3.Is OEM customization available from KEYONG?
Yes, KEYONG supports OEM and customized relay solutions based on voltage, coil specification, and application requirements.
4.How does KEYONG ensure product quality?
All products are manufactured under ISO 9001:2015 system and tested with automated inspection equipment to ensure consistent quality before delivery.
5.Does KEYONG support bulk orders?
Yes, as a relay factory in China, KEYONG supports wholesale and bulk orders with stable production capacity and flexible delivery schedules.
Address
350 Renmin North Road, Hengxi Town, Yinzhou District, Ningbo City, Zhejiang Province, China
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