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Expert Power Control 8291-1

21-fold switched AC/DC PDU to control and protect AV and IT equipment

Expert Power Control 8291-1 is a Power Distribution Unit (PDU) which allows switching and current measurement of electrical devices via a TCP/IP network or serial connection. Up to 21 AV and ICT devices can be connected to the unit. The special feature: Thanks to the integrated quality power supply unit, typical AC or DC consumers with different voltages and connection types can be supplied, measured and controlled: PCs, servers, monitors, amplifiers, routers, NAS, external drives etc.

Expert Power Control 8291-1 disposes of the following switchable outlet connectors on the rear panel:

                 4x IEC C13 (230V AC)     
                 3x 4x terminal clamp (12V/24V DC configurable)  
                 5x terminal clamp or 5x USB A (5V DC)                                   

Further benefit: Due to the integrated industrial power supply unit in Expert Power Control 8291-1, the space-consuming plug-in power supply units of the connected consumers can be discarded.

The load outputs can each be switched separately via a web interface, via the serial interface, via SNMP or the button on the AC/DC power switch. Safety is a top priority: Each DC output is protected with its own eFuse, so that short circuits in connected devices do not affect other consumers. Furthermore, a type 3 overvoltage protection is integrated and prevents damage to the device and connected consumers.

Expert Power Control 8291-1 supports SNMPv3, SSL, SSH and IPv6 as well as Telnet, Radius and Modbus TCP. The measurement of a wide range of electrical parameters enables the user to identify and exploit power saving potentials in the IT environment. In addition, responsibles receives warning messages when fault currents occur (residual current measurement type A). This enables preventive maintenance measures to be taken before downtime occurs. 

• Switching network or media technology devices through media controls of well-known AV manufacturers (Atlona, ​​Barco, Crestron, Extron, Neets)
• Restart PCs, servers, routers, and switches remotely
• Reduce power consumption of standby devices through schedule control
• Network monitoring through integration with monitoring software (PRTG, Icinga, Nagios, Power IQ, Tivoli)
• Switch and control servers and IT equipment in server rooms and data centers
• Environmental monitoring by connected sensors (temperature, humidity and air pressure)

• AV environments: huddle rooms, conference rooms, theaters, auditoriums, LED walls or digital signage systems
• IT installations: Engineering rooms, data centers, 19 "cabinets or server rooms
• Industrial environments: Production facilities, warehouses or workshops


Expert Power Control 8291-1


  • 21 outlets: IEC C13, terminal clamp, USB A
  • 4 voltages: 230V AC, 24V DC, 12V DC, 5V DC
  • Each DC outlet secured by eFuse
  • Event and schedule-controlled switching
  • Energy and residual current metering (RCM)
  • 2 connectors for optional plug-n-play sensors
  • IPv6, SNMPv3, SSL, Telnet, Radius, Modbus TCP


  • 21 Power Ports individually switchable directly on the device, via HTTPS, SNMP, command line tool and RS232 serial interface
  • 17 DC switchable Power Ports with 24 V, 12 V and 5 V (terminal clamp, USB A)
  • 4 AC switchable Power Ports with 230 V (IEC C13)
  • Integrated failure-proof power supply unit (max. 300 W) with active power factor correction (PFC)
  • MTBF value of power supply unit: around 1.8 mio operating hours
  • Power monitoring of 5 V, 12 V and 24 V
  • Maximum available DC current per port: 4 A
  • Current segmentation of banks:
    5 V: max. 8.8 A, 12 V: max. 6 A, 24 V: max. 12.5 A
  • Switching through programmable sensor thresholds
  • Status and power-up delay individually adjustable for each Power Port after power blackout (0...9999 seconds)
  • Latency time of 1 second prevents simultaneous power-up of multiple Power Ports
  • Programmable timetables and power cycling sequences for remote reboots
  • Self-healing feature: An individual watchdog (ICMP/TCP) for each Power Port automatically reboots in case of lock-up
  • Each outlet protected by eFuses in case of short circuits
  • Integrated overvoltage protection (SPD) type 3 prevents damage of device and of connected consumers (L-N, L/N-PE), status retrievable over network
  • Dedicated high-inrush relays avoid welding of relay contacts at start-up peaks
  • Residual current metering (RCM) type A
  • Metering of energy, current, power factor, phase angle, frequency, voltage and active/apparent/reactive power
  • A clearly visible LED display for port status, total current, IP address, sensor data and error reports
  • 2 interfaces for optional sensors for environmental monitoring (temperature, humidity and air pressure)
  • Internal beeper for acoustic alarm for set sensor thresholds
  • Low internal power consumption
  • Developed and manufactured in Germany


  • Dynamic IP address allocation by DHCP or manual allocation with static IP address
  • IPv6-ready
  • Firmware update over Ethernet during operations (without reboot of device or load outlets)
  • NTP function can be activated
  • SNMPv1, v2c, v3 (Get/Traps)
  • TLS 1.1, 1.2, 1.3
  • Syslog support
  • IP Access Control List
  • Secure login through SSL
  • Configuration and control via Telnet possible
  • Radius and Modbus TCP support
  • Comfortable configuration by web browser, Windows or Linux tool
  • 10/100 Mbit/s
Switchable Power PortLoad outlets IEC (max. 10 A)Switching relay outputDC outletseFuse protected outletsOvervoltage protectionRS232 interfaceNetwork interfaceProgrammable turn-on/-off sequenceMetering electr. dimensionsResidual Current MonitoringInterface for external sensorsInterface for calibrated sensors
Electrical Connections
1 Power supply IEC C20, 230 V (max. 16 A)
4 IEC C13, 230 V AC (max. 10 A)
12 power outlets industrial clamp, 12 V DC or 24 V DC (max. 4 A)
5 power outlets industrial clamp or USB A (no data transfer), 5 V DC (max. 3 A)
1 Ethernet connector RJ45 (10/100 Mbit/s)
1 Serial interface RS232 (Sub-D, 9-pin)
2 RJ45 interfaces for optional plug-n-play cable sensors
Technical Details
19 inch, 1 rack unit
LxHxD: 43.9 x 4.4 x 24.1 cm (without brackets)
Weight: ca. 4.4 kg
Operating temperature: 0 - 50 °C
Storage temperature: -20 - 70 °C
Relative humidity: 0 - 95 % (non-condensing environment)
Order code
Scope of delivery
Expert Power Control 8291-1
Quick start guide
Description File name Version Date Size Changes to previous version/Comments
Manual manual-epc8291-1.pdf 1.0.1 15/03/2021 3.17 MB

User manual

Product Brief gude-product-brief_epc8291-1.pdf 17/11/2020 2.52 MB

Short product description

Quick Start Guide schnellstart_quickstart_ip-devices.pdf 1.4 12/04/2021 914.35 KB

Quick start guide (leaflet)

Layout gude-layout-epc8291-1.pdf 01/10/2020 2.33 MB

Structure sketch of product

Declaration ce-declaration_epc8291_28-09-2020.pdf 28/09/2020 1.07 MB

CE declaration of conformity

Firmware 1.0.9 28/06/2021 795.23 KB

Latest firmware and MIB table as zip file. Firmware can be installed via webinterface of device.

Revision history

System Tool 2.7.13 10/02/2021 755.47 KB

Windows-Tool for firmware updates and network configuration

System Tool gblc-v0.7.11.tar.gz 0.7.11 11/08/2015 139.15 KB

Linux-Tool for firmware updates and network configuration