The utility model discloses a plug -in dual supply low pressure feeder pillar, the power distribution box comprises a box body, the box is provided with qianmen and back door, main power display module, plug -in dual power transfer switch, low -voltage circuit breaker, the external power source insulation board of including in the box, and the power display module links to each other with plug -indual power transfer switch, and plug -in dual power transfer switch fixes on the external power source insulation board, links to each other with low -voltage circuit breaker through the copper bar,between plug -in dual power transfer switch and the external power source insulation board, between plug -in dual power transfer switch and the copper bar, all adopt the plug -in to be connected between low -voltage circuit breaker and the copper bar. The utility model is simple in operation, the security performance is high, when constant power supply breaks down, can switch over immediately to stand -by power supply, is connected dual power transfer switch's moving contact and static contact design for the plug -in, install, the use more in a flexible way, the convenience, possible quick assembly disassembly power, labour saving and time saving has brought very big facility for the power work of rushing to repair.