KEYONG KQS(4100) Slim Profile Cost Saving Signal Relay is a compact 5A PCB signal relay designed for manufacturers seeking reliable switching performance with optimized procurement costs. Engineered for OEM applications and industrial electronic control systems, it combines stable signal transmission, low coil power consumption, high sensitivity, and a space-saving slim profile, making it ideal for automation equipment, telecommunication devices, home automation controllers, household appliances, and industrial control boards.
Built with plastic sealed construction, the KQS(4100) provides effective protection against dust and environmental interference, ensuring long-term operational stability in demanding applications. Fully RoHS compliant, it meets international market requirements and supports global sourcing needs. Each relay undergoes 100% online testing and strict quality inspection to ensure consistent performance, fast response time, and extended mechanical endurance.
As a professional China signal relay manufacturer and supplier, KEYONG offers factory-direct pricing, stable production capacity, OEM/ODM customization, and engineering support to help buyers reduce sourcing costs without sacrificing quality. The KQS(4100) is widely trusted for use in automation systems, telecom equipment, wireless remote controls, smart home devices, and PCB control modules.
| Contact arrangment | A,B,C |
| Contact resistance | ≤50mQ(1A 6VDC) |
| Contact material | Silver alloy:AgSnO₂In₂O₃、AgSnO₂、AgNi |
| Contact rating(Res.load) | 1A 120VAC/3A 250VAC/30VDC |
| Max switching voltage | 250VAC/30VDC |
| Max switching current | 5A |
| Max switching power | 750VA/90W |
| Electrical endurance(Frequency:360 ops/h) | 1×10⁵ops/1×10ops |
| Mechanical endurance(Frequency:18000 ops/h) | 1×10⁷ops |
| Power consumption(W) | 0.36W(L) | 0.2W(H) | ||||||||||||
| Nominal voltage(VDC) | 03 | 05 | 06 | 09 | 12 | 18 | 24 | 03 | 05 | 06 | 09 | 12 | 18 | 24 |
| Coil resistance(Q±10%) | 25 | 69.4 | 100 | 225 | 400 | 900 | 1600 | 45 | 125 | 180 | 405 | 720 | 1620 | 2880 |
| Pick-up voltage(Max) | 75%(Nominal voltage) | |||||||||||||
| Drop-out voltage(Min) | 5%(Nominal voltage) | |||||||||||||
| Max allowable overdrive voltage(VDC) | 130%(Nominal voltage) | |||||||||||||
| Insulation level | B/F | |
| Insulation resistance | 100MΩ(500VDC) | |
| Dielectric strength(Leakage current 1mA) | Between coil and contacts | 1000VAC 1min |
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Between open contacts | 500VAC 1min |
| Operate time(at nominal voltage) | ≤5ms | |
| Release time(without diode)(at nominal voltage) | ≤5ms | |
| 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 3.8g | |
| Construction | Sealed Flux proofed | |
The KEYONG Slim Profile Cost Saving Signal Relay is widely used in electronic systems requiring compact size, stable signal switching, and cost-efficient performance. Its slim PCB design and reliable electrical characteristics make it an ideal choice for:
Industrial Automation Equipment – Control circuits, PLC modules, and automation interface boards
Telecommunication Devices – Signal transmission switching, communication modules, and networking equipment
Smart Home Systems – Intelligent switches, smart control panels, and home automation devices
Household Appliances – Air conditioners, washing machines, microwave ovens, and control boards
Security & Alarm Systems – Access control systems, alarm modules, and monitoring devices
Power Management Systems – Low-power control switching and circuit protection applications
Consumer Electronics – Compact electronic products requiring efficient PCB relay solutions
Q1: What is the main advantage of the KEYONG Slim Profile Signal Relay?
A: It offers an excellent balance of compact size, 5A switching capacity, low power consumption, and competitive factory pricing, making it ideal for large-volume procurement.
Q2: What industries commonly use this signal relay?
A: It is widely used in industrial automation, telecom equipment, smart home devices, household appliances, and PCB control systems.
Q3: Does KEYONG support OEM and customized relay solutions?
A: Yes. As a professional China signal relay manufacturer, KEYONG provides OEM/ODM services, including customized coil voltage, contact configuration, and packaging.
Q4: Is this relay suitable for high-density PCB designs?
A: Yes. Its slim profile and compact footprint make it highly suitable for space-saving PCB applications.
Q5: Why choose KEYONG as your signal relay supplier?
A: KEYONG offers factory-direct pricing, strict quality control, stable production capacity, and reliable long-term supply support for global relay buyers.
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