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SIRIUS
Siemens Industry, Inc. Industrial Control Product Catalog 2017
3/24
3
OVERlOAd
RElAYS
Technical specifications
1) Permissible rated current in case of heavy starting
Size S0 at 10 A up to 40 A
- CLASS 20, Ie max = 32 A
- CLASS 30, Ie max = 25 A
2) 90 % for relay with current setting range 160A to 630A
3) Terminal compartment: degree of protection IP00.
Type 3RB30 16,
3RB31 13
3RB30 26,
3RB31 23
3RB30 36
3RB31 33
3RB30 46,
3RB31 43
3RB30 56,
3RB31 53
3RB30 66,
3RB31 63
Size S00 S0 S2 S3 S6 S10/S12
Width 45 mm 45 mm 55 mm 70 mm 120 mm 145 mm
General data
Trips in the event of Overload, phase failure, and phase unbalance
+ ground fault (for 3RB31 only)
Trip class according to IEC 60947-4-1 CLASS 3RB30: 10E, 20E;
3RB31: 5E, 10E, 20E or 30E adjustable
Phase failure sensitivity Yes
Overload warning No
Reset and recovery
• Reset options after tripping
Manual and automatic RESET, 3RB31 has
an integrated connection for electrical
remote RESET (24 V DC)
• Recovery time
.nimTESER citamotua roF- Appox. 3 min
.nimTESER launam roF- Immediately
.nimTESER etomer roF- Immediately
3RB20: Manual and automatic RESET;
3RB21:
Manual, automatic and remote RESET
Appox. 3 min
Immediately
Immediately
Features
• Display of operating status on device Yes, by means of switch position indicator slide
• TEST function
Yes, test of electronics by pressing the button Test
Test of auxiliary contacts and wiring of control current circuit by actuating
the switch position indicator slide/self-monitoring
• RESET button
• STOP button
Ambient temperatures
C°tropsnart/egarotS• -40 ... +80
C°noitarepO•
-25 ... +60
C°noitasnepmoc erutarepmeT•
+60
• Permissible rated current at
- Temperature inside control cabinet 60 °C, stand-alone installation %
- Temperature inside control cabinet 60 °C, mounted on contactor %
- Temperature inside control cabinet 70 °C %
Repeat terminals
• Coil repeat terminal Yes Not required
• Auxiliary contact repeat terminal Yes Not required
Degree of protection according to IEC 60529 IP20 IP20
3)
Touch protection according to IEC 61140 Finger-safe for vertical contact from the front Finger-safe,
for busbar
connection
with cover
Finger-safe
with cover
Shock resistance with sine according to IEC 60068-2-27
g
/ms
Electromagnetic compatibility (EMC) – Interference immunity
• Conductor-related interference
- Burst according to IEC 61000-4-4
(corresponds to degree of severity 3)
kV 2 (power ports), 1 (signal ports)
- Surge according to IEC 61000-4-5
(corresponds to degree of severity 3)
kV 2 (line to earth), 1 (line to line)
• Electrostatic discharge according to IEC 61000-4-2
(corresponds to degree of severity 3)
kV 8 (air discharge), 6 (contact discharge)
• Field-related interference according to IEC 61000-4-3
(corresponds to degree of severity 3)
V/m 10
Electromagnetic compatibility (EMC) –
Emitted interference
Degree of severity B according to EN 55011 (CISPR 11) and EN 55022 (CISPR 22)
Resistance to extreme climates – air humidity % 95
Dimensions See dimensional drawings
Installation altitude above sea level m Up to 2000
Mounting position Any
Type of mounting Direct mounting /
Stand-alone installation
Direct mounting/stand-alone installation
with terminal support
100
15/11 (signaling contact
97/98 in position
"tripped": 9g/ms)
15/11 (signaling contact
97/98 in position
"tripped": 4 g/11ms)
15/11 (signaling
contact 97/98 in
"Tripped" position:
8 g/11ms)
Explosion protection – Safe operation of motors
with"Increased safety" type of protection
EC type test certificate number according to directive 94/9/EC (ATEX)
On
request
Yes
No
100
100
On request
100
70
100 or 90
2)
70
100
—
On request
PTB 09 ATEX 3001
II (2) G [Ex e] [Ex d] [Ex px]
II (2) G [Ex t] [Ex p]
PTB 09 ATEX 3001
II (2) G [Ex e] [Ex d] [Ex px]
II (2) G [Ex t] [Ex p]
Overload Relays
3RB2 / 3RB3 Solid-State Overload Relays
3RB20, 3RB21, 3RB30, 3RB31 up to 630A for standard applications