3UG4621/3UG4622 current monitoring relays
7
7.1 Application areas
Application areas
The current monitoring relays are used, for example, in the following applications:
Table 7-1 Application areas of the current monitoring relays
Function Application
• Undercurrent monitoring and overcurrent mon‐
itoring
• Monitoring the functionality of electrical loads
• Wire-break monitoring
• Threshold switch for analog signals from 4 to 20
mA
• Emergency lighting (failure of a lamp → drop in
current strength in the system)
• Heating systems (electroplating plants, plastic
injection machines, paintshops)
• Lamps (tunnels, OP lighting, trac lights, sig‐
nal systems, UV lamps, infrared radiators, laser
lamps)
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 121
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