8
Installation RSP 20/25/30/35
Release
 
08
 
08/2014
 The power supply cables used are permitted for the temperature 
range required by the application case.
 Relevant for North America:
The power cords are suitable for ambient air temperatures of at 
least 167 °F (75 °C). The power cord wires are made of copper.
 
Start connecting the electrical wires only if all the above safety require-
ments are fulfilled.
 Internal fuses are triggered solely in the case of a detected error in the 
device. In case of damage or malfunction of the device, turn off the 
working voltage and return the device to the plant for inspection.
 For operating voltage connections with a protective conductor connec-
tion: connect the protective conductor before connecting the conduc-
tors for the operating voltage. 
 Only switch on the operating voltage for the device when the following 
requirements are fulfilled:
 The housing is closed
 The terminal blocks are wired correctly
 The terminal blocks for the operating supply are connected
 Signal contact
For the signal contact to be connected, make sure the following require-
ments are met:
 The device is grounded.
 The signal contact connection wires are voltage-free.
 The connected voltage is limited by a current limitation device or a 
fuse.
Observe the electrical threshold values for the signal contact. 
See “General technical data” on page 40.
 
Start connecting the signal contact solely if all the above requirements are 
fulfilled.
Installation site requirements
 Install the device in a fire protected enclosure according to 
EN 60950-1.
 Only for device variants featuring working voltage with the character-
istic value K9 or KK:
See “Device name and product code” on page 13.
Install this device solely in a switch cabinet or in an operating site with 
restricted access, to which maintenance staff have exclusive access.