Zhejiang Fanhua Electronics Co., Ltd. produced the W33 power relay, which is a high-performance, very dependable electronic control part that is made for tough application situations. This product combines cutting-edge technology with strict manufacturing standards to provide excellent electrical performance, mechanical strength, and adaptability to different environments. It meets all international safety and environmental regulations, which makes it a great choice for smart home systems, household appliances, and industrial control equipment.
10A high current switching capability, maximum switching voltage up to 277VAC, and switching capacity up to 2500VA
Includes anti-oxidant, arc-resistant AgSnO₂ contact materials exhibiting contact resistance of ≤100mΩ.
Operating time is less than or equal to 15 milliseconds, with a release time of less than or equal to 5 milliseconds, ensuring a rapid response.
The creepage distance and air clearance exceed 6mm, thereby providing improved safety margins.
The UL insulation system complies with Class F standards and demonstrates superior voltage withstand strength. 1000 VAC between open contacts; 4000 VAC between coil and contacts.
Certified by UL, TUV, and COC in accordance with various international safety standards.
Complies with RoHS environmental standards, suitable for green electronic products
Anti-solder flux structure design effectively prevents soldering contamination
Mechanical life of 5 million operations, electrical life of 500,000 operations under 10A 250VAC conditions
Dimensions: 24.0 × 11.0 × 25.0 mm, suitable for high-density PCB layouts
PCB terminal types available for easy installation
1A Type (Normally Open Contact)
Resistive Load: 5A/10A at 250VAC
Maximum Switching Voltage: 277VAC
Maximum Switching Current: 10A
Minimum Allowable Load: 5VDC at 100mA
Insulation resistance: 1000MΩ (500VDC test voltage)
Dielectric withstand voltage:
Between open contacts: 1000VAC, 1 minute
Between coil and contacts: 4000VAC, 1 minute
Impact Resistance:
Functional: 98 m/s² (10g)
Destructive: 980 m/s² (100g)
Vibration Resistance: 10 Hz to 55 Hz, 1.5 mm double amplitude
Environmental Adaptability
Operating Temperature Range: -40°C to 85°C
Operating Humidity Range: 5% to 90%
The W33 relay has obtained multiple international authoritative certifications:
UL Certification: File Number E475405, covering applications for 5A/10A 250VAC and TV-5/TV-8 125VAC
TUV Certification: Document No. R50406989, applicable to 5A/10A 250VAC conditions
COC Certification: Document No. COC18002188987, compliant with relevant safety standards
To ensure the relay operates at peak performance and to extend its lifespan, it is essential to prevent exposure to mechanical impacts or drops.
Utilisation of the product within the defined electrical parameter range is advised, and it is essential to refrain from overloading.
Ensure that dust and moisture protection measures are in place during installation, and operate the equipment within the specified environmental conditions.
This product incorporates a solder-resistant design; however, adherence to proper soldering practices is still advised.
In the event that product specifications are revised, please consult the most recent technical documentation.
Zhejiang Fan Hua Electronics Co., Ltd. operates as a high-tech enterprise focused on the research, development, production, and sales of relays. The organisation follows a business philosophy centred on prioritising quality and focussing on customer needs. By implementing a stringent quality management system and fostering ongoing technological innovation, it delivers high-quality relay products and solutions to clients worldwide.
The W33 power relay represents Fan Hua Electronics' technical capabilities in power control, reflecting the company's unwavering commitment to product quality and reliability. We sincerely invite customers from all sectors to choose the W33 relay and experience its outstanding performance and reliability.
