
As a professional 50kA 4 pole AC surge protective device factory, we specialize in three-phase + neutral surge protection for industrial control systems. Our production line supports OEM, wholesaleund bulk buy cooperation with global partners.
This SPD protects L1, L2, L3, and N simultaneously, with a combined surge discharge capacity of 50kA per phase. Using MOV ZnO varistors and graphite C insulation, it offers excellent performance and heat dissipation.
The device is IP65-rated, DIN-rail mountableund CE certified, providing stable operation in solar systems, combiner boxesund AC distribution panels.
We supply OEM SPDs in bulk and help customers develop customized designs for specific voltage levels. Partner with our factory to get reliable, durable surge protectors for industrial energy systems.






