NINGBO KEYONG JINGSHENG ELECTRICAL APPLIANCE CO., LTD. presents the KQI15D (115F-2P) Subminiature High Power Relay 8A/250VAC, a compact PCB-mounted switching component engineered for stable performance in space-constrained electronic and industrial control systems. As a professional relay manufacturer and supplier in China (KEYONG), this model is designed to balance high switching capability with ultra-compact structure, making it suitable for modern automation and smart device applications where reliability and miniaturization are critical.
Ultra-compact height of only 16.2mm for high-density PCB layouts
Rated switching capacity of 8A / 250VAC for stable load control
Low coil power consumption for energy-efficient system design
Multiple protection structures available: plastic sealed, flux-proof, and explosion-proof versions
High safety performance with 5kV dielectric strength and 10mm creepage distance
Optional compliance with IEC60335-1 safety standard for household appliance applications
Fully automated production with 100% online electrical testing and RoHS compliance
This Subminiature High Power Relay 8A/250VAC KEYONG is widely applied in smart home appliances, industrial automation systems, instrumentation equipment, telecommunications devices, and remote control modules, providing reliable switching performance across diverse operating environments.
To help global buyers make a clearer decision, here is a comparison between the Subminiature High Power Relay 8A/250VAC and other common relay types from KEYONG relay product line:
Subminiature Relay (8A/250VAC)
●Smaller size
●Suitable for compact PCB design
●Moderate load capacity
Standard Power Relay
●Larger size
●Higher load capacity (10A–30A+)
●Used in industrial power control systems
Conclusion: Choose subminiature relay when PCB space is limited and load is moderate.
Subminiature Relay
●PCB-mounted
●Electronic control systems
●Lower mechanical stress environment
Automotive Relay
●Designed for vibration and harsh environments
●Higher durability under engine conditions
●Used in vehicles and mobility systems
Conclusion: Automotive relays are for harsh environments, while subminiature relays are for PCB electronics.
Subminiature High Power Relay (8A/250VAC)
●Handles medium load switching
●Suitable for power control
Signal Relay
●Low current (signal-level switching)
●Used for communication circuits
Conclusion: If your application involves load switching, choose power relay instead of signal relay.
| Contact arrangment | 2A,2C |
| Contact resistance | ≤50mΩ |
| Contact material | Silver alloy:AgSnO₂In₂O₃、AgSnO₂、AgNi |
| Contact rating(Res.load) | 8A 250VAC/30VDC |
| Max switching voltage | 440VAC/125VDC |
| Max switching current | 8A |
| Max switching power | 2000VA |
| Electrical endurance(Frequency:360 ops/h) | 1×10⁵ps/1×10⁴ops |
| Mechanical endurance(Frequency:18000 ops/h) | 1×10⁷ops |
| Power consumption(W) | 0.4W(L) | |||||||
| Nominal voltage(VDC) | 05 | 06 | 09 | 12 | 18 | 24 | 36 | 48 |
| Coil resistance(Q±10%) | 62 | 90 | 202 | 360 | 810 | 1440 | 3240 | 5760 |
| Pick-up voltage(Max) | ≤80%(Nominal voltage) | |||||||
| Drop-out voltage(Min) | ≥5%(Nominal voltage) | |||||||
| Max allowable overdrive voltage(VDC) | 150%(Nominal voltage) | |||||||
| Insulation level | B/F | |
| Insulation resistance | 1000MΩ(500VDC) | |
| Dielectric strength(Leakage current 1mA) | Between coil and contacts | 5000VAC 1min |
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Between contacts sets | 2500VAC 1min |
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Between open contacts | 1000VAC 1min |
| Operate time(at nominal voltage) | ≤15ms | |
| Release time(without diode)(at nominal voltage) | ≤8ms | |
| Humidity | 5%～85%RH | |
| Ambient temperature | -40℃~+85℃ | |
| Shock resistance | Functional | 98m/s² |
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Destructive | 980m/s² |
| Vibration resistance | 10Hz~150Hz | |
| Weight | Approx 15g | |
| Construction | Sealed Flux proofed | |
The Subminiature High Power Relay 8A/250VAC KEYONG is widely applied in:
●Industrial automation control systems
●Household appliances such as HVAC and kitchen equipment
●Communication and networking devices
●Automotive electronic control modules
●Power supply and control circuits
●Smart device and IoT control systems
With its stable performance, this relay is especially suitable for manufacturers seeking a reliable relay supplier from China for long-term OEM cooperation.
As a professional relay factory in China, KEYONG integrates R&D, production, testing, and after-sales service under one system. With over 12,000㎡ of production area and automated assembly lines, the company ensures high efficiency and consistent quality output.
KEYONG relays are certified by international standards including UL, TUV, CQC, CE, and RoHS, ensuring compliance for global markets. Each product undergoes strict inspection using automated testing and precision calibration systems to guarantee reliability before shipment.
For global buyers looking for a stable relay supplier or manufacturer in China, KEYONG provides not only products but also engineering support and application guidance.
KEYONG operates under ISO 9001 quality management standards and implements full-process quality control from raw material selection to final inspection. The Subminiature High Power Relay series is tested for:
●Electrical endurance
●Mechanical durability
●Temperature resistance
●Insulation performance
●Safety compliance under load conditions
CE
CQC
RoHS
TUV
UL
These strict processes ensure stable performance in demanding industrial environments.
Q1: What is a Subminiature High Power Relay used for?
It is mainly used for switching medium-power electrical loads in compact PCB systems, including industrial automation, household appliances, and communication devices.
Q2: Can the KEYONG 8A relay handle inductive loads?
Yes, but inductive loads such as motors or coils should be properly derated to ensure long-term reliability. Our engineering team can assist in selecting the correct configuration.
Q3: What makes KEYONG relay different from other China manufacturers?
KEYONG focuses on:
Strict ISO 9001 quality control
Full automated production lines
UL, TUV, CE, CQC certified products
Stable mass production capability (80M+ annual output)
This ensures consistent quality from a reliable China relay manufacturer and supplier.
Q4: What is the lifespan of this relay?
Under rated load conditions, the relay offers long mechanical and electrical life cycles suitable for industrial and commercial applications.
Q5: Can I use this relay in high-temperature environments?
Yes, but performance depends on environmental conditions. For extreme temperature applications, KEYONG can recommend reinforced or sealed relay versions.
Q6: Does KEYONG support OEM or customized relay solutions?
Yes. As a professional relay factory in China, KEYONG provides OEM/ODM services including coil customization, housing design, and electrical parameter adjustment.
Q7: Where is KEYONG relay mainly exported?
Our relays are exported globally, including North America, Europe, the Middle East, and Southeast Asia, serving industrial and automotive sectors.
Selecting the correct Subminiature High Power Relay 8A/250VAC is essential to ensure stable performance, safety, and long service life in your application. As a professional relay manufacturer in China – KEYONG, we recommend evaluating the following key parameters before choosing a relay:
1. Load Requirement (Current & Voltage)
If your circuit operates within 8A / 250VAC, this model is suitable.
For inductive loads (motors, transformers), consider derating to ensure longer lifespan.
For higher loads above 8A, a power relay or automotive relay may be more appropriate.
2. Control Voltage (Coil Specification)
Ensure the coil voltage matches your PCB or control system design.
Incorrect coil selection may lead to unstable switching or failure.
3. Installation Space (PCB Design)
This subminiature relay is designed for high-density PCB layouts.
Ideal for compact electronic devices where space is limited.
4. Application Environment
Standard industrial environments: fully suitable
High humidity / high temperature environments: consider sealed or enhanced protection versions
Vibration-heavy environments: automotive-grade relays may be required
5. Switching Frequency
For high-frequency switching circuits, ensure proper heat dissipation design.
KEYONG engineering support can help evaluate lifecycle requirements.
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350 Renmin North Road, Hengxi Town, Yinzhou District, Ningbo City, Zhejiang Province, China
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