The Square D by Schneider Electric 100 Amp 10-Space 20-Circuit Outdoor Overhead Service Main Breaker CSED offers a 4-jaw, ring-type design with a meter socket. This load center is compatible with overhead service feeds and features a type-A hub on the top and a knockout on the bottom for wiring configuration. This combination service entrance device is designed for use with Homeline brand breakers and tandem breakers.