A power routing rack can be used to provide various power support redundancies to one or more computing racks in a data center. Power feeds are supplied to bus bars in a power bus bar array extending through the rack, and power routing assemblies positioned in the rack route power from one or more of the bus bars to a computing rack. Each assembly includes circuit breakers that couple to separate bus bars and a routing module that routes power from one or more of the circuit breakers to one or more computing racks. The routing module can include a transfer switch that selectively routes power. The routing module can include an electrical bridge that concurrently routes power. Each assembly can be positioned within the rack to couple the circuit breakers to various power bus bars to adjust the power support redundancy provided to one or more computing racks.