The Square D 200 Amp 12-Space 12-Circuit Outdoor Combination meter Socket and Main Lug Load Center is suitable for use as a combination service entrance device (CSED). This unit is ANSI certified and UL listed with a maximum 10,000 AIR. The combination service entrance device features a Ringless meter cover with a single-phase, 4-jaw meter socket. It is suitable for overhead or underground service applications. Meets EUSERC Specifications. Surface mount or convertible to semi-flush with appropriate flange kit. This CSED is built with a plated, aluminum bus bar that is tested and is compatible with Square D Homeline circuit breakers,except Plug-On Neutral breakers. Homeline CSEDs are designed for the value-minded contractors, remodelers, builders and homeowners. Square D Homeline CSEDs are engineered for fast installation and wire savings.