Modular and pluggable PDU to power tray/shelf device

A modular power distribution unit (PDU) to distribute power to a plurality of power supply units (PSUs) arranged in a rack-mountable power tray or power shelf, the modular PDU comprising:

• a housing configured to receive, at an input face, a plurality of power cables comprising:
• a first power cable of a first power bus;
• and
• a second power cable of a second power bus;
• one or more first power connectors arranged at an output face of the housing opposite the input face, wherein the one or more first power connectors are arranged to couple with one or more second power connectors of the power tray or power shelf;
• distribution circuitry within the housing, wherein the distribution circuitry is configured to distribute power from the first power bus and from the second power bus to each of the plurality of PSUs via a respective one or more of the first power connectors;
• and
• one or more fasteners configured to attach the output face of the housing to a face of the power tray or power shelf such that the one or more second power connectors are retained in a coupled configuration with the one or more first power connectors.

A modular power distribution unit (PDU) to distribute power to a plurality of power supply units (PSUs) arranged in a rack-mountable power tray or power shelf, the modular PDU comprising:

• a housing configured to receive, at an input face, a plurality of power cables comprising:
• a first power cable of a first power bus;
• and
• a second power cable of a second power bus;
• a plurality of electronic or electro-mechanical circuit breakers, wherein each of the circuit breakers has electronic ganging control between different phases of multi-phase power of one of the first power bus and the second power bus;
• one or more first power connectors arranged at an output face of the housing opposite the input face, wherein the one or more first power connectors are arranged to couple with one or more second power connectors of the power tray or power shelf;
• and
• one or more fasteners configured to attach the output face of the housing to a face of the power tray or power shelf such that the one or more second power connectors are retained in a coupled configuration with the one or more first power connectors.