Hongfa UL/C-UL Certification
Hongfa relays are certified to UL/C-UL safety standards.
💡 FAE Insights
📋 Customer Cases
Industrial Automation OEM
Challenge
Needed guidance on relay application
Solution
Applied recommendations from Hongfa UL/C-UL Certification
Customer Feedback
"Applied these guidelines in 50+ designs with excellent results"
Appliance Manufacturer
Challenge
Needed guidance on relay application
Solution
Applied recommendations from Hongfa UL/C-UL Certification
Customer Feedback
"Reduced relay failures by 80% following these recommendations"
Frequently Asked Questions
1. What UL standards apply to relays?
Relays are typically certified to UL508 (Industrial Control Equipment) or UL873 (Temperature-Indicating and Regulating Equipment). The standards cover electrical safety including dielectric strength, insulation resistance, temperature rise, and endurance testing. UL certification ensures the relay meets North American safety requirements.
2. How do I verify a relay is UL listed?
UL listed relays carry the UL mark (UL in a circle) on the relay body or packaging. You can also verify listing on the UL Online Certifications Directory using the manufacturer's name and model number. The UL file number (e.g., E123456) can access detailed certification information. Contact our quality team for UL file numbers.
3. What is the difference between UL Recognized and UL Listed?
UL Listed products are complete end-products ready for use. UL Recognized components are intended for factory installation in other equipment. Hongfa relays are typically UL Recognized components.