The SLP-234 is a 2U high 19" rack mount 220 Volt 30 amp single phase power distribution bar. This model has a NEMA L15-30 for a Main Inlet connector. There are two 20 Amp electrical circuit breakers on the front panel each of which are connected to one of the two ( X & Y ) phases of the main power inlet connector. Each breaker independently distributes power to a T-slot duplex U-ground receptacle on the rear panel which is also parallel connected to one half of the split T-slot duplex U-ground convenience receptacle located on the front panel. In addition there are two NEMA L5-30 single twist-lock outlet connectors located on the rear panel, each of which are independently connected directly to each ( X & Y ) phase of the L15-30 Main Inlet connector.