En mini size 40kA 4P GDT AC surge protective device is designed for three-phase four-wire AC systems where compact size, strong protection capability, and stable gas discharge tube technology are required. As a professional factory, manufacturer, and supplier, we specialize in OEM/ODM production and wholesale / bulk buy / in bulk orders for international buyers. This device uses GDT (Ne gas) as its main protection element, providing extremely low residual voltage and long service life. Compared with MOV-only products, GDT-based SPDs offer higher surge endurance and better thermal stability, ideal for industrial-grade applications.
The housing material PVC/PA66/PBT ensures flame retardancy, impact resistance, and insulation safety. This 4-pole version is suitable for L1 + L2 + L3 + N systems, widely used in industrial machinery, AC distribution panels, building automation, HVAC power supply, and other scenarios where full-phase protection is required. The mini size structure allows easy installation in limited spaces, while the 35mm DIN rail design supports fast assembly and maintenance.
All units follow IEC 61643-11:2011 / EN 61643-11:2022 manufacturing standards and come with CE & TUV certifications, providing globally recognized safety assurance. As a surge protective device manufacturer, we offer complete OEM customization, including specification adjustments, casing customization, private label branding, and packaging design. For wholesalers and distributors seeking a reliable and compact AC SPD solution with high surge capability, this mini size 40kA 4P GDT model is an excellent fit for power, automation, solar AC output, and industrial control environments.
