Miniature Power PCB Relay for Switching 20A is designed for high-current switching applications where stability, safety, and long service life are critical. Manufactured by KEYONG, a professional China Manufacturer, Supplier, Factory of electromagnetic relays, this product is engineered to deliver reliable performance in compact PCB-mounted systems.
With strong electrical durability and consistent contact performance, this relay is widely used in industrial control systems, automotive electronics, household appliances, and power management modules. It is developed under strict quality control standards to ensure stable operation in demanding environments.
As a trusted relay supplier in China, KEYONG focuses on precision manufacturing and continuous improvement, ensuring every relay meets global application requirements.
●Compact miniature design suitable for PCB installation
●Stable 20A switching capability for high-current loads
●Reliable electromagnetic performance with low contact resistance
●Strong resistance to electrical wear for extended service life
●Designed for automated PCB assembly processes
●Suitable for both industrial and consumer electronic applications
The product reflects KEYONG’s commitment as a professional relay manufacturer in China, focusing on durability, consistency, and application flexibility.
Choosing the right Miniature Power PCB Relay for Switching 20A is critical for ensuring stable circuit performance and long service life. As a professional China relay manufacturer and supplier, KEYONG provides technical guidance to help customers select the most suitable relay for different applications.
When selecting a 20A PCB relay, engineers usually consider the following factors:
Load type: resistive load (heaters, lamps) or inductive load (motors, compressors)
Switching current requirement: continuous current vs inrush current
Coil voltage compatibility: matching control circuit design
PCB layout space: compact design requirements for high-density boards
Electrical life expectation: frequency of switching cycles
Safety certification requirement: UL, TUV, CE standards for export markets
For high-current applications such as automotive systems or industrial control boards, a 20A-rated miniature power relay provides a balance between compact size and reliable switching capacity, especially when space on PCB is limited.
KEYONG, as an experienced relay factory in China, offers engineering support to help customers avoid under-rated or over-designed relay selection, ensuring cost efficiency and system stability.
| Contact arrangment | A |
| Contact resistance | ≤100mΩ |
| Contact material | Silveralloy:AgSnO₂ In₂O₂、AgSnO₂、AgNi |
| Contact rating(Res.load) | 20A 250VAC |
| Max switching voltage | 250VAC/30VDC |
| Max switching current | 20A |
| Max switching power | 4000VA |
| Electrical endurance(Frequency:360 ops/h) | 1×10⁵ops/1×10⁴ops |
| Mechanical endurance(Frequency:18000 ops/h) | 1×10⁷ops |
| Power consumption(W) | 0.54W(L) | 0.72W(D) | ||||||||||||||
| Nominal voltage(VDC) | 05 | 06 | 09 | 12 | 18 | 24 | 36 | 48 | 05 | 06 | 09 | 12 | 18 | 24 | 36 | 48 |
| Coil resistance(Ω±10%) | 46.3 | 66.7 | 150 | 267 | 600 | 1067 | 2400 | 4267 | 34.7 | 50 | 112.5 | 200 | 450 | 800 | 1800 | 3200 |
| Pick-up voltage(Max) | 80%(Nominal voltage) | |||||||||||||||
| Drop-out voltage(Min) | 5%(Nominal voltage) | |||||||||||||||
| Max allowable overdrive voltage(VDC) | 130%(Nominal voltage) | |||||||||||||||
| Insulation level | B/F | |
| Insulation resistance | 1000M2 | |
| Dielectric strength Leakage current 1mA) | Between coil and contacts | 5000VAC 1min |
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Between open contacts | 1000VAC 1min |
| Operate time(at nominal voltage) | ≤20ms | |
| Release time(without diode)(at nominal voltage) | ≤10ms | |
| Humidity | 5%～85%RH | |
| Ambient temperature | -40℃~+85℃ | |
| Shock resistance | Functional | 98m/s² |
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Destructive | 980m/s² |
| Vibration resistance(Double amplitude) | 10Hz~55Hz 1.5mm | |
| Weight | Approx 17g | |
| Construction | Flux proofed | |
The Miniature Power PCB Relay for Switching 20A is widely applied across multiple industries:
●Industrial automation control systems
●Automotive electronic control units
●Home appliance switching modules
●HVAC and temperature control systems
●Power supply and energy management equipment
●Communication and signal control systems
With stable performance under different load conditions, KEYONG relays are commonly selected by global OEM customers looking for a reliable China relay factory supplier.
Ningbo Keyong Jingsheng Electrical Appliance Co., Ltd. is located in Ningbo, Zhejiang Province, China, and operates a 12,000 square meter manufacturing facility equipped with multiple automated production lines.
The factory integrates advanced equipment such as automated assembly systems, testing machines, and precision inspection tools to ensure high efficiency and stable output.
With an annual production capacity exceeding tens of millions of relays, KEYONG has become a dependable China relay manufacturer and supplier serving global customers in automotive, energy, communication, and industrial sectors.
KEYONG provides full-cycle technical support, including:
●Relay selection guidance based on application requirements
●Electrical parameter consultation
●Custom solution evaluation for OEM projects
●Stable lead time management for mass production
●After-sales technical support and troubleshooting assistance
This service system ensures customers receive not only products but also engineering-level support from a professional China factory supplier of relays.
●Over a decade of manufacturing experience in relay production
●Strong engineering and R&D capability
●Advanced automated production and testing systems
●Strict quality control aligned with international standards
●Stable global supply to automotive, industrial, and energy sectors
KEYONG continues to strengthen its position as a trusted China Manufacturer, Supplier, Factory of electromagnetic relays, focusing on long-term cooperation and consistent product quality.
Understanding the difference between similar relay types helps engineers choose the right solution for their application. Below is a practical comparison from a manufacturing and application perspective:
| Parameter | Miniature Power PCB Relay (20A) | Signal Relay | General Power Relay |
|---|---|---|---|
| Rated Load | High current up to 20A | Low current (signal level) | Medium to high load |
| Size | Compact PCB type | Ultra-compact | Larger structure |
| Application | Power switching, industrial control | Signal transmission, communication | General power control |
| Load Type | Motors, heaters, power modules | Control signals only | Household & industrial loads |
| Durability | High electrical/mechanical life | Very high signal stability | Medium to high durability |
| Cost Efficiency | Balanced for industrial use | Low power applications | Broader but less compact |
Q1: What is the main use of a 20A miniature PCB relay?
It is used for switching medium to high current loads in compact electronic systems such as industrial controllers, automotive modules, and household appliances.
Q2: Can this relay be used in automotive applications?
Yes, it is widely applied in automotive electronic control systems where stable switching performance is required.
Q3: Is KEYONG a manufacturer or trading company?
KEYONG is a direct relay manufacturer and factory in China, integrating production, R&D, and quality control.
Q4: Does the relay support PCB mounting?
Yes, it is specifically designed for PCB installation in automated assembly systems.
Address
350 Renmin North Road, Hengxi Town, Yinzhou District, Ningbo City, Zhejiang Province, China
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