General Technical Data
SIRIUS 3RW44 manual
10-20 GWA 4NEB 535 2195-02 DS 06
10.3.5 Electromagnetic Compatibility
10.3.6 Utilization Classes
Regulation DIN EN 60947-4-1 (VDE 0660 Part 102), and/or IEC 60947-4-1
differentiate two utilization classes designated as "Utilization class 1" and "Utilization
class 2". With both utilization classes, the short-circuit to be controlled is safely
switched off. The only difference is the degree of damage to the device after a short-
circuit.
Soft starters Type 3RW44 ..
Conductor cross-sections
Auxiliary conductor (1 or 2 conductors can be connected):
Screw-type terminals
•Solid mm
2
2x(0.5...2.5)
• Finely stranded with cable end sleeve mm
2
2x(0.5...1.5)
• AWG conductors
- solid or stranded AWG 2x(20...14)
- Finely stranded with cable end sleeve AWG
2x(20...16)
• Connecting screws
- Tightening torque Nm 0.8 ... 1.2
lbf.in
7 ... 10.3
Spring-type terminals
•Solid mm
2
2x(0.25...1.5)
• Finely stranded with cable end sleeve mm
2
2x(0.25...1.5)
• AWG conductors, solid or stranded AWG
2x(24...16)
Standard Parameter
Electromagnetic Compatibility according to EN 60947-4-2
EMC interference immunity
Electrostatic discharge (ESD) EN 61000-4-2 ±4 kV contact discharge, ±8 kV air discharge
Electromagnetic HF fields
EN 61000-4-3 Frequency range: 80 ... 1000 MHz with 80 % at 1 kHz
Severity 3, 10 V/m
Conducted HF interference
EN 61000-4-6 Frequency range: 150 kHz ... 80 MHz with 80 % at 1 kHz
Interference 10 V
HF voltages and HF currents on conductors
•Burst EN 61000-4-4 ±2 kV/5 kHz
• Surge
EN 61000-4-5 ±1 kV line to line
±2 kV line to ground
EMC emission
EMC radio interference field strength EN 55011 Limit value of Class A at 30 ... 1000 MHz
Radio interference voltage
EN 55011 Limit value of Class A at 0.15 ... 30 MHz
Is a radio interference suppression filter required?
Radio interference suppression A (industrial application) No
Utilization class 1
The fuseless load feeder can be inoperative after each short-circuit tripping. Damage to the contactor and the
overload release is permissible. With 3RA1 load feeders, the circuit breaker itself always has utilization category 2.
Utilization class 2
After a short-circuit tripping, there must be no damage to the overload release or any other part. The 3RA1 fuseless
load feeder can be restarted without any components needing to be replaced. Only welding of the contactor contacts
is permissible, as long as they can be separated easily without any noticeable damage.
These utilization classes are highlighted in the Technical Data by an orange background.
1
ToC
2
ToC
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