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SIRIUS 3RR2 current monitoring relays
8.10 Technical data
SIRIUS Innovations
736
System Manual, 01/2011, A8E56203870002-03
8.10.1.4
Configuration of load feeders
Table 8- 17 Load feeders with 3RR2 current monitoring relays
Feature
Benefit
3RR21 Basic,
analog setting
3RR22 Standard,
digital setting
Short-circuit-proof up to 100 kA at 690 V
(in conjunction with the appropriate fuses
or the appropriate motor starter
protector)
Provides optimum protection
of the loads and operating
personnel in the event of short
circuits due to insulation faults
or faulty switching operations
✓
✓
Electrical and mechanical matching to
3RT2 contactors
Simplifies configuration
Reduces connection outlay
and costs
Enables stand-alone assembly
as well as space-saving direct
mounting
✓
✓
Spring-loaded connection system for
main circuit
Enables fast connections
Ensures that connections are
vibration-resistant
Enables maintenance-free
connections
✓ (optional)
✓ (optional)
Spring-loaded connection system for
auxiliary circuits
Enables fast connections
Ensures that connections are
vibration-resistant
Enables maintenance-free
connections
✓ (optional)
✓ (optional)
Summary of Contents for SIRIUS 3RH Series
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