4  RHD250 to 4000 (Contrac) ELECTRICAL ROTARY ACTUATOR |  SEI/RHD250/4000-EN REV. A   
 
… 1  Safety 
Intended use 
 
 
Control actuators are used exclusively for operating final control 
elements (valves, valve flaps, etc.). 
They may only be operated using a suited Contrac electronic unit 
for field installation or mounting rack installation. 
In addition to this operating instruction, the relevant 
documentation for the electronic unit and software tool must be 
observed. 
 
 
Improper use 
 
The following are considered to be instances of especially 
improper use of the device: 
•  For use as a climbing aid, for example for mounting 
purposes. 
•  For use as a bracket for external loads, for example as a 
support for piping, etc. 
•  Material application, for example by painting over the 
housing, name plate or welding/soldering on parts. 
•  Material removal, for example by spot drilling the 
housing. 
 
 
Notes on data safety 
 
This product is designed to be connected to and to 
communicate information and data via a network interface. 
It is operator’s sole responsibility to provide and continuously 
ensure a secure connection between the product and your 
network or any other network (as the case may be). 
Operator shall establish and maintain any appropriate measures 
(such as but not limited to the installation of firewalls, 
application of authentication measures, encryption of data, 
installation of anti-virus programs, etc.) to protect the product, 
the network, its system and the interface against any kind of 
security breaches, unauthorized access, interference, intrusion, 
leakage and / or theft of data or information.  
ABB Automation Products GmbH and its affiliates are not liable 
for damages and / or losses related to such security breaches, 
any unauthorized access, interference, intrusion, leakage and / 
or theft of data or information. 
 
 
 
 
 
 
Warranty provisions 
 
Using the device in a manner that does not fall within the scope 
of its intended use, disregarding this manual, using 
underqualified personnel, or making unauthorized alterations 
releases the manufacturer from liability for any resulting 
damage. This renders the manufacturer's warranty null and void. 
 
 
Manufacturer’s address 
 
ABB Automation Products GmbH 
Measurement & Analytics 
Schillerstr. 72 
32425 Minden 
Germany 
Tel:   +49 571 830-0 
Fax:  +49 571 830-1806 
 
 
Customer service center 
Tel:  +49 180 5 222 580 
Email:  automation.service@de.abb.com