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Overload Relays
3RB2 Solid-State Overload Relays
3RB22, 3RB23 for high-feature applications
■
Technical specifications
Type – Overload relay of complete system
Size
General data
Trips in the event of
Trip class acc. to IEC 60947-4-1
Phase failure sensitivity
Overload warning
Reset and recovery
• Reset options after tripping
• Recovery time
- For automatic RESET
- For manual RESET
- For remote RESET
Features
• Display of operating state on device
• TEST function
• RESET button
• STOP button
Explosion protection – safe operation of motors
with "increased safety" type of protection
EC type test certificate number acc. to
directive 94/9/EC (ATEX)
Ambient temperatures
• Storage/transport
• Operation
• Temperature compensation
• Permissible rated current
- Temperature inside control cabinet 60 °C
- Temperature inside control cabinet 70 °C
Repeat terminals
• Coil repeat terminal
• Auxiliary contact repeat terminal
Degree of protection acc. to IEC 60529
Touch protection acc. to IEC 61140
Shock resistance with sine acc. to IEC 60068-2-27
Electromagnetic compatibility (EMC)
– Interference immunity
• Conductor-related interference
- Burst acc. to IEC 61000-4-4
(corresponds to degree of severity 3)
- Surge acc. to IEC 61000-4-5
(corresponds to degree of severity 3)
• Electrostatic discharge acc. to IEC 61000-4-2
(corresponds to degree of severity 3)
• Field-related interference acc. to IEC 61000-4-3
(corresponds to degree of severity 3)
Electromagnetic compatiblity (EMC)
– emitted interference
Resistance to extreme climates – air humidity
Dimensions
Installation altitude above sea level
Mounting position
Type of mounting
1) On request.
2) Current measuring modules size S6 and S10/S12 with busbar connection in
conjunction with cover.
32
Siemens · 2011
3RB22, 3RB23
S00 ... S10/S12
Overload, phase failure and phase unbalance (> 40 % acc. to NEMA),
+ ground fault (with corresponding function expansion module) and activation of the
thermistor motor protection (with closed PTC sensor circuit)
CLASS 5, 10, 20 and 30 adjustable
Yes
I
Yes, from 1.125 x
for symmetrical loads
e
I
and from 0.85 x
for unsymmetrical loads
e
Manual, automatic and remote RESET
min
- For tripping due to overcurrent: 3 (stored permanently)
- For tripping by thermistor: time until the motor temperature has fallen 5 K
below the response temperature
- For tripping due to a ground fault: no automatic RESET
min
- For tripping due to overcurrent: 3 (stored permanently)
- For tripping by thermistor: time until the motor temperature has fallen 5 K
below the response temperature
- For tripping due to a ground fault: immediately
min
- For tripping due to overcurrent: 3 (stored permanently)
- For tripping by thermistor: time until the motor temperature has fallen 5 K
below the response temperature
- For tripping due to a ground fault: immediately
Yes, with 4 LEDs: Green "Ready" LED, red "Ground Fault" LED,
red "Thermistor" LED and red "Overload" LED
Yes, test of LEDs, electronics, auxiliary contacts and wiring of control circuit by press-
ing the button TEST/RESET / self-monitoring
Yes, with the TEST/RESET button
No
PTB 05 ATEX 3022
II (2) GD
°C
-40 ... +80
°C
-25 ... +60
°C
+60
%
100
1)
%
Not required
Not required
2)
IP20
2)
Finger-safe
g/ms
15/11
2 (power ports), 1 (signal ports)
kV
kV
2 (line to earth), 1 (line to line)
kV
8 (air discharge), 6 (contact discharge)
V/m
10
Degree of severity A acc. to EN 55011 (CISPR 11) and EN 55022 (CISPR 22)
%
100
See dimensional drawings
m
Up to 2000
Any
Evaluation module: stand-alone installation,
current measuring module size S00 to S3: stand-alone installation,
current measuring module size S6 and S10/S12: stand-alone installation and moun-
ting onto contactors
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