Schneider Electric 1222-0350D Surge Protective Board

Schneider Electric's Square D Surgelogic Surge Protective Board 1222-0350D delivers 120 kA surge protection for 480Y/277V applications, packaged as a dedicated Surge Protective Board within the Surgelogic family. The unit carries the T222-1810 designation and the 1222-0350D part number, aligning with Square D's surge protection offerings and enabling integration into a Surgelogic protection scheme. Designed to intercept transient overvoltages on 480Y/277V equipment, it helps safeguard downstream loads in commercial and industrial panel installations where high‑voltage surges can threaten essential equipment. This board forms part of a broader protection strategy for electrical systems operating at 480Y/277V, supporting protection coordination with other Surge Protection Devices in a protected panel. Typical installation contexts include service entrances and critical branch circuits in facilities with 480V electrical infrastructure, where surge protection is required to mitigate damage, downtime, and costly equipment failures.