Dimensions of DC Power Distribution Units for Smart City Cabinets

Most smart city DC PDUs are designed in a compact 1U form factor, approximately 44–45 mm in height, compatible with standard 19-inch racks, and offer multiple monitored output channels.Standard Form FactorSmart DC PDUs for telecom and edge computing cabinets are typically 1U high, which corresponds to 44.5 mm (1.75 inches) in vertical rack space . They are designed to fit 19-inch standard racks, making them compatible with most smart city cabinet enclosures . Some models, like the Delta Smart PDU I-Type, can accommodate up to 21 intelligent plug-in breakers while maintaining the 1U height .Output Channels and MonitoringMatismart 1U10: Provides 10 individual DC output channels with full monitoring and remote control capabilities .Delta Smart PDU I-Type: Supports programmable intelligent breakers for each output, enabling energy monitoring and remote switching .DIGITUS GUDE Smart PDU: While primarily AC, it demonstrates the trend of integrated monitoring, alarms, and environmental sensors in compact PDUs .Mounting and InstallationThese PDUs are designed for direct installation in standard racks and can be mounted in telecom, edge, or smart city cabinets. They often include front-facing connections for easy access and integration with existing DC power supply systems . Some models also support RS485 or Modbus communication for remote management .Environmental and Operational ConsiderationsTemperature range: Many units operate from -40°C to 65°C, suitable for outdoor or harsh environments .Remote monitoring: Real-time voltage, current, and energy tracking are standard, ensuring reliable operation in mission-critical smart city applications .Space efficiency: The 1U design minimizes rack footprint, allowing high-density deployment in limited cabinet space .SummaryFor smart city cabinets, DC PDUs are generally 1U high (44–45 mm), 19 inches wide, and offer 10–21 monitored output channels. They support remote control, energy monitoring, and environmental sensing, and are designed for high-density, space-efficient installation in standard telecom or edge computing racks . This makes them ideal for smart city infrastructure requiring reliable, compact, and remotely manageable DC power distribution.