Rittal DK 7979.337 Power Distribution Unit - Energy measurement
Part Number: 7979337
Manufacturer
Rittal
Part number
7979337
Category
Alt Part Number
DK 7979.337
Quick Summary
Rittal DK 7979.337 PDU delivers per-phase energy measurement for IT rack power distribution. This enables precise load visibility and proactive capacity planning in data centers and edge deployments. Operators often struggle with hidden hotspots and outages when monitoring collective amperage; the PDU’s independent phase sensing and individually switchable outlets address that gap. The unit adheres to CE-compliant EMC Directive 2014/30/EU and EN 62368-1 safety standards, ensuring regulatory and safety confidence for IT facilities. By combining a compact aluminum enclosure with a web-enabled interface, it improves operational efficiency, supports remote management, and reduces on-site labor through zero-U mounting options and tool-free serviceability.
Product Information
Extended Description
7979337 Rittal: DK PDU international, switched, compact basic power distribution incl. energy measurement per phase, individually switchable output slots, with network interface and display, WLD: 44x1740x70 mm, IEC 60320: 24x C13 + 6x C19
Article number
DK 7979.337
Product description
High-end power distribution in a compact design for IT network and server racks. With switching function and power measurement at the infeed or per phase.
Benefits
For vertical mounting, it may be attached in the zero-U space of the Rittal VX IT or TS IT rack with no need for tools
Technical specifications
Display/controller unit in the PDU enclosure rotatable through 180° and replaceable
Material
Aluminium section, black anodised | Slots: Plastic
Supply includes
Assembly parts
Options
Type 3 overvoltage protection with interchangeable arresters while operational, with status monitoring, suitable for integration into PDU enclosure | Residual current measurement (type B) per infeed/phase/fuse | Monitoring of the optionally available overvoltage protection | CMC III CAN bus sensors may be connected for ambient monitoring, max. 16 sensors | Other enclosure colours are available
Measurement functions, description
Emergency power supply to PDU web server via PoE, sequential disconnection of the outputs
Dimensions
Width: 44 mm | Depth: 70 mm | Length: 1,740 mm
No. of sockets and type
24 x C13 / 6 x C19
Sockets
24 x C 13 | 6 x C 19
Rated operating voltage
400 V (AC)
Rated current (max.)
32 A
Power consumption
22 kW
Infeeds
Phases per infeed: 3~
Length of connection cable
3 m
Type of electrical connection
CEE
Interfaces
Fully redundant Ethernet interface 10/100/1000 Mbit/s (2x RJ45, 1x with PoE)
Number RJ45 ports for sensor units max
6
Directives
EMC Directive 2014/30/EU
Standards
EN 62368-1
Protocols
Web server (HTTP, HTTPS, SSL) SSH, Telnet, NTP
Operating temperature range
5 °C...50 °C
Ambient humidity (non-condensing)
10...95 %
Storage temperature range
-20 °C...70 °C
To fit
Enclosure type: VX IT enclosure frame: ≥ 2,000 mm | Enclosure type: VX IT 19" mounting angles: ≥ 2,000 mm
Packs of
1 pc(s).
Weight/pack
7.18 kg
Customs tariff number
85366990
EAN
4028177947993
ETIM 9
EC002762
ETIM 8
EC002762
ECLASS 8.0
27142604
Product description
DK PDU international, switched, compact basic power distribution incl. energy measurement per phase, individually switchable output slots, with network interface and display, WLD: 44x1740x70 mm, IEC 60320: 24x C13 + 6x C19
Feature energy measurement per phase and individually switchable outputs → Business Impact improved visibility into real-time load, enabling precise capacity planning and targeted energy savings in IT racks → Application data centers and server rooms needing per-phase monitoring. Feature dual Ethernet with PoE and a web server for remote management → Business Impact enhanced reliability and remote visibility, reducing on-site visits and improving incident response → Application networked IT environments requiring secure access and time synchronization. Feature rotatable 180° display/controller and replaceable unit → Business Impact easier installation in VX IT frames and simplified maintenance → Application space-constrained racks with versatile mounting. Feature 24 x C13 and 6 x C19 sockets, 400 V AC, 32 A, 22 kW capacity → Business Impact supports high-density server deployments with headroom for growth while meeting power demands → Application data center midplanes and high-density racks. Feature protocols HTTP/HTTPS/SSL, SSH, Telnet, NTP and CAN bus sensor compatibility → Business Impact provides secure, standards-based remote monitoring and ambient monitoring options → Application enterprise IT ecosystems seeking robust integration and compliance.
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FAQs
For VX IT deployments, plan vertical mounting in zero‑U spaces as specified by Rittal. The PDU measures 44 mm wide, 1,740 mm long, and 70 mm deep with a weight around 7.18 kg, enabling tool-free, wall-free mounting in VX IT frames. It supports frame widths ≥ 2,000 mm and 19'' mounting angles, ensuring compatibility with standard IT rack infrastructure and simplified cable management.
Per-phase energy measurement provides granular insight into how loads are distributed across phases, enabling accurate capacity planning and early detection of imbalances. Combined with individually switchable outlets, you can selectively isolate over‑utilized circuits, reduce cooling demand, and implement chargeback models with precise energy accounting for IT equipment.
The DK 7979.337 features fully redundant Ethernet with 10/100/1000 Mbit/s (two RJ45 ports, one with PoE) and supports web server protocols HTTP, HTTPS, SSL, plus SSH, Telnet and NTP for time sync. Up to six sensor ports can be connected via RJ45, enabling ambient monitoring and secure remote management with industry-standard encryption and access control.
Yes. The PDU complies with EMC Directive 2014/30/EU and EN 62368-1 safety standards, aligning with typical CE expectations for networked electrical equipment. It operates from 5 °C to 50 °C and 10–95% relative humidity, with storage down to -20 °C and up to 70 °C, suitable for data centers, server rooms, and challenging IT environments.
Investing in the DK 7979.337 yields measurable ROI through reduced energy waste, improved uptime, and lower cooling costs due to better load management. Remote monitoring minimizes on-site maintenance, while energy visibility enables accurate chargeback and asset utilization reporting, delivering faster MTTR and enhanced capacity planning for IT infrastructure.