Quality & Certifications
At Wan Long Electric, quality is built into every stage of our design, manufacturing, and testing processes. Our commitment to international standards ensures every product delivers the highest levels of safety, reliability, and performance.
ISO 9001 Certified Quality Management System
Our Suzhou manufacturing facility operates under a fully certified ISO 9001 Quality Management System, covering the entire product lifecycle — from raw material procurement and component inspection through to assembly, testing, and final delivery.
International Standards Compliance
All products are designed, manufactured, and tested in accordance with the following international standards:
| Product | Standard | Scope |
|---|---|---|
| Low Voltage Switchgear | IEC 61439-1 & IEC 61439-2 | Switchgear and controlgear assemblies |
| Air Circuit Breaker (ACB) | IEC 60947-2 | Low-voltage circuit breakers |
| Molded Case Circuit Breaker (MCCB) | IEC 60947-2 | Low-voltage circuit breakers |
| Automatic Transfer Switch (ATS) | IEC 60947-6-1 | Automatic transfer switching equipment |
| Motor Protection Relay | IEC 60947-4-1 / IEC 60255 | Motor starters and protection relays |
| All Products | GB 7251 / GB 14048 | Chinese national equivalent standards |
CE Marking
Our products carry the CE mark, confirming compliance with EU directives including the Low Voltage Directive (LVD 2014/35/EU) and the Electromagnetic Compatibility Directive (EMC 2014/30/EU). CE-marked products are available for customers in Europe and markets that recognize CE certification.
Type Testing & Factory Acceptance Testing (FAT)
All products undergo rigorous type testing at accredited third-party laboratories. Every unit also undergoes Factory Acceptance Testing (FAT) before shipment, including:
- Dielectric strength (hi-pot) testing
- Insulation resistance measurement
- Functional operation testing (open / close / trip)
- Trip characteristic verification (circuit breakers)
- Transfer time measurement (ATS)
- Communication interface testing (RS485 / Modbus)
- Visual inspection and dimensional verification
In-House Testing Laboratory
Our testing laboratory is equipped with high-current test equipment capable of verifying breaking capacity up to 100kA, plus environmental test chambers for temperature and humidity cycling — enabling efficient routine production tests and application-specific verification.
Traceability & Documentation Package
Every shipment includes a complete documentation package:
- Test report and inspection certificate
- Product datasheet and technical manual
- Wiring diagrams and installation instructions
- CE Declaration of Conformity (where applicable)
- Packing list and shipping documents
Continuous Improvement
We regularly review customer feedback, field performance data, and industry standard updates to drive product enhancements. Our R&D team works closely with our quality department to ensure all designs meet or exceed the latest international standards.
Need copies of our certifications or test reports? Contact our technical team →