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Expert Transfer Switch 8801-1

The intelligent Automatic Transfer Switch (ATS) for redundant power supply

Expert Transfer Switch 8801-1 is a Automatic Transfer Switch (ATS) for switching to an alternate power supply. Little transfer times in the range of industry standards, also in phase-shift condition, allow a reliable prevention of downtimes for connected IT equipment. Automatic shift-in back to the recurred power supply is seamlessly possible.

It has a height of one rack unit and is powered by two IEC C20 power supplies. Expert Transfer Switch 8801-1 enables feeding of up to six consumers with IEC C13 connectors (10 A) and one consumer with IEC C19 connector (16 A). In addition, it allows manual switching by button push, SNMP, Telnet or web interface for purposes of power supply maintenance.
Expert Transfer Switch 8801-1
incorporates energy and residual current metering and disposes of clearly visible LED displays providing a quick overview of switching status and measured data of the device. Two sensor interfaces allow monitoring of ambient temperature, humidity and air pressure by optional available sensors. Expert Transfer Switch 8801-1 makes it possible to generate messages by e-mail, Syslog and SNMP traps depending on threshold values in energy, temperature or humidity metering.


Expert Transfer Switch 8801-1


  • Redundant power supply in 19" racks
  • Transfer times in the range of industry standard
  • Prevention of down times also in phase-shift
  • Power supply for up to 7 loads
  • 2 energy meters and residual current monitoring (RCM)
  • 2 interfaces for optional sensors
  • IPv6, SNMPv3, SSL, Telnet, Radius, Modbus TCP


  • Automatic transfer to alternate power supply if blackout of primary power supply occurs (A or B)
  • Switches also if phase is shifted
  • If primary power supply returns (A or B), automatic shift-in possible 
  • Transfer times in the range of industry standards and thus without interruption of operation
  • Typical transfer time: 7-10 ms
  • LED display featuring status of power supply including phase-shift
  • Metering of energy, current, power factor, phase angle, frequency, voltage and active/apparent/reactive power
  • 2 energy meters, one meter continuously, the other resettable
  • Metering of residual current type A
  • Clearly visible LED display for total current, IP address, sensor data and error reports
  • 2 interfaces for optional sensors for environmental monitoring (temperature, humidity and air pressure)
  • Messages by e-mail, Syslog and SNMP traps depending on threshold values in energy, temperature, humidity or air pressure metering
  • 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)
  • SNMPv1, v2c, v3 (Get/Traps)
  • Syslog support
  • TLS 1.0, 1.1, 1.2
  • IP Access Control List
  • Secure login through SSL
  • Configuration and control via Telnet possible
  • Comfortable configuration by web browser, Windows or Linux tool
  • 10/100 Mbit/s
Transfer SwitchLoad outlets IEC (max. 10 A)Load outlets IEC (max. 16 A)Network interfaceMetering electr. dimensionsEnergy meterResidual Current MonitoringInterface for external sensorsInterface for calibrated sensors
Electrical Connections
2 power supplies (IEC C20, max. 16 A)
6 load outlets (IEC C13, max. 10 A)
1 load outlet (IEC C19, max. 16 A)
Ethernet connector RJ45 (10/100 Mbit/s)
Galvanic isolated signal output (Sub-D 9-pin)
2 sensor interfaces (RJ45) for optional sensors
Technical Details
19 inch, 1 rack unit
Dimensions of device: LxHxD: 43.9 x 4.4 x 19.5 cm (without brackets)
Weight: ca. 2.5 kg
Operating temperature: 0 - 50 °C
Storage temperature: -20 - 70 °C
Relative humidity: 0 - 95 % (non-condensing environment)
Order code
Scope of delivery
Expert Transfer Switch 8801-1
2 connector cables (safety socket - IEC C19)
Description File name Version Date Size Changes to previous version/Comments
Manual manual-ets8801.pdf 1.4.2 15/03/2021 3.33 MB

User manual

Product Brief gude-product-brief-ets8801.pdf 04/04/2019 282.84 KB

Short product description

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

Quick start guide (leaflet)

Declaration ce-declaration_ets8801_10-03-2017.pdf 10/03/2017 65.99 KB

CE declaration of conformity

Firmware 1.5.3 29/06/2021 798.08 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