The W20 series relays are Fanhar's painstakingly designed, premium control parts, which are the culmination of years of technological advancement and relay production experience. Designed as a core component for household appliances and industrial control applications, the W20 has earned widespread global trust from customers through its robust 25A switching capacity, exceptional environmental adaptability, and stable performance.
The W20 relay utilises high-quality AgSnO₂ (silver-tin oxide) contact material, celebrated for its exceptional resistance to arc erosion and consistent contact properties. Initial contact resistance is strictly controlled below 100mΩ (test conditions: 6VDC 1A), ensuring highly efficient energy transmission. The product has a rated load of 25 A/250 V AC or 30 V DC and a maximum switching capacity of 6,250 VA/750 W. It effortlessly meets the demanding requirements of various resistive loads.
Notably, this relay has a maximum switching current of 32 A and a maximum switching voltage of 277 V AC/30 V DC. It can reliably handle loads as low as 5 V DC/100 mA, demonstrating its broad range of applications.
The product innovatively offers two packaging options to meet diverse environmental demands:
Solder-Resistant Type: Suitable for relatively clean work environments, eliminating the impact of pollutants like H₂S, SO₂, NO₂, and dust.
Plastic-Sealed Type: This product is engineered to withstand the most punishing industrial conditions, including corrosive gases and pollutants, ensuring total protection.
This differentiated design philosophy enables the W20 to confidently tackle challenges ranging from clean home environments to demanding industrial sites.
This relay meets UL Class F insulation standards and has an initial insulation resistance of 1000 MΩ (tested at 500 VDC). Regarding insulation strength, both the open contacts and coil-to-contact connections withstand 4500VAC for 1 minute, providing a robust safety barrier for the entire electrical system and personnel.
Rapid Response: Operating time ≤20ms, release time ≤10ms
Stable Contact: AgSnO₂ contact material ensures long-term reliability
Precise Control: Accurate make and break voltage parameters guarantee control precision
Wide Temperature Operation: -40°C to +85°C operating range
Humidity Adaptation: 5% to 90% relative humidity range
Mechanical Durability: Mechanical life up to 2,000,000 operations
Environmental Resistance: Shock resistance up to 980 m/s² (100g), vibration resistance 10Hz–55Hz, 1.5mm double amplitude
W20 provides extensive DC coil voltage choices to satisfy varied system drive needs:
Compact Dimensions: Exquisite form factor measuring 30.4mm × 15.9mm × 25.1mm (L × W × H)
Precise Layout: Pin pitch meticulously engineered with multiple hole configurations including Φ1.2mm and Φ1.8mm
Optimized Wiring: PCB layout area of 27.6mm × 13.8mm with 57.9mm pin spacing
Lightweight Design: Approx. 23g weight balancing strength and weight reduction
Thanks to its robust 25A switching capability, outstanding electrical endurance and dual protection design featuring solder mask and plastic sealing, the W20 relay has a wide range of applications.It serves as an indispensable core control component in motor control and heating circuits for household appliances such as washing machines, air conditioners, and microwave ovens. It is also widely used in industrial automation control and power management systems, as well as in various other applications that require the reliable switching of medium-to-high power loads. From clean household environments to complex industrial sites with dust and corrosive gases, the W20 delivers stable and enduring performance assurance.
Based on detailed performance data provided in the specification sheet:
Under AC resistive load conditions, the product demonstrates outstanding current switching capability across a voltage range of 30V to 277V. The DC resistive load curve indicates stable operation under both low-voltage high-current and high-voltage low-current conditions.
The durability curve clearly shows that under AC 250V resistive load conditions:
The base life is maintained even in the high-current region (25A).
Electrical life significantly increases as the contact current drops below 10A.
Optimal product life is achieved at operating currents around 5A.
Strict quality management systems are in place for the manufacturing of W20 relays. Every unit is subjected to rigorous performance testing and quality inspection. Comprehensive quality control is implemented throughout the entire process, from raw material procurement to finished product shipment.
To make sure that it performs at its best and lasts as long as possible, we suggest:
Installation Precautions: Avoid drops or mechanical impacts; maintain pin integrity
Environmental Selection Guide: Choose appropriate encapsulation based on actual application contaminants
Electrical Parameter Compliance: Strictly operate within specified electrical parameters
Installation Precision Assurance: Follow recommended PCB layout and mounting dimensions
Regular Inspection Maintenance: Periodic relay status checks are advised for critical applications
The W20 series relays have become an indispensable electrical control solution in home appliances and control systems, thanks to their outstanding electrical performance, precision mechanical design, exceptional environmental adaptability, and extended service life. Whether in ordinary household applications or demanding industrial environments, the W20 delivers stable performance and reliable operation to safeguard customers' equipment and systems.
Fanhar consistently upholds the corporate philosophy of “Innovative Technology, Reliable Connections,” dedicated to providing customers with high-quality electronic components and professional technical support services. We look forward to collaborating with you to jointly pioneer a promising future in smart control.
