The Square D® Load Centers and Combination Service Entrance Devices, RC12L200C. Enclosure mounting style performed as surface mount or convertible to semi-flush (use appropriate flange kit). This HOM Ringless Meter Mains meets Federal Specification W-P-115c as Type 1, Class 2, are UL Listed, suitable only for use as service equipment. In interior main lug (service disconnects field installed). Meter Socket has no By-pass. Designed for 3 wire 120/240 VAC single phase systems. Surgebreaker has a NEMA 2 indoor rating. This surge protection device is rated at 50 kA per phase. This surge protection device has a height of 3.98 inches, a width of 1.97 inches and depth of 2.60 inches. This surge protection device is CSA certified