Power distribution unit Rittal 7979.236 (Metered) 30 AC outlets C13/C19, 3 m cable, three-phase 400 V, 16 A

The Rittal 7979.236 Metered Power Distribution Unit (PDU) is a three-phase rack-mounted power distribution device designed for professional IT environments. It supplies 30 AC outlets in a mix of C13 and C19 sockets, supports a nominal input voltage of 400 V and a maximum current of 16 A, and delivers up to 11 000 W of power. The unit features integrated per-phase energy measurement, onboard current and voltage monitoring, a 3 m power cable, and network management capabilities via HTTP/HTTPS, SNMP, Modbus/TCP and OPC‑UA for remote monitoring and data collection.

Advantages

The metered design provides accurate energy measurement (±1% kWh) to relevant standards, enabling precise power planning and billing. Built-in network interfaces and support for common management protocols allow centralized monitoring and integration with existing infrastructure management systems. The PDU is designed for vertical mounting in rack zero-U space and includes tool-free fitting options for compatible Rittal racks. Phase colour coding, adjustable alarm thresholds, and an integrated real-time clock with battery buffering increase operational clarity and reliability.

Suitable for

• Data center and server rack power distribution where per-phase metering is required
• Network rooms and colocation facilities needing remote monitoring and SNMP/Modbus integration
• Racks with mixed C13 and C19 power requirements for servers, switches and storage equipment
• Environments that require vertical, zero‑U mounting to preserve rack space

When it may not be suitable

This PDU is designed for three-phase 400 V infrastructures and a maximum current of 16 A; it is not suitable for single-phase installations or for systems requiring higher current capacities. It also does not replace a PDU with switched outlet control if per-outlet remote switching is required rather than metering and monitoring.

Key specifications

• Input voltage: 400 V nominal
• Maximum current: 16 A
• Max. power capacity: up to 11 000 W
• Outlets: 30 AC outlets (combination of C13 and C19)
• Cable length: 3 m integrated power cable
• Measurement accuracy: ±1% (kWh) to EN 62053-21
• Mounting: vertical, zero-U rack mounting compatible with Rittal racks
• Weight: 5.2 kg
• Colour: Black
• Monitoring interfaces: HTTP/HTTPS, SNMP, Modbus/TCP, OPC‑UA

How to use

Install the PDU vertically in the rack’s zero-U space or a compatible mounting position according to the rack manufacturer’s instructions. Connect the integrated 3 m power cable to the appropriate three-phase 400 V supply rated for up to 16 A. Use the built-in web interface or supported network protocols to configure monitoring, set warning and alarm thresholds for voltage, current and power, and to integrate with building management or monitoring systems. Regularly review measured values, operating hours and alarm logs to ensure balanced phase loading and to identify potential issues.

What to consider before purchase

• Confirm your facility provides a three-phase 400 V supply and a circuit rated for 16 A
• Ensure your rack supports vertical zero‑U mounting and that the unit’s dimensions and weight are compatible
• Determine whether you need per-outlet switching (this unit is metered but not a switched PDU)
• Plan network connectivity and protocol support required for your monitoring system (HTTP/HTTPS, SNMP, Modbus/TCP, OPC‑UA)

Usage recommendations

Balance loads across phases, set appropriate warning and alarm thresholds for current and power, and integrate the PDU into your monitoring system to make use of per-phase metering data for capacity planning and preventive maintenance.