Brochure
SIRIUS
Siemens Industry, Inc. Industrial Control Product Catalog 2017
3/22
3
OVERlOAd
RElAYS
For accessories, see pages 3/49-3/50.
For description, see pages 3/18-3/20.
For technical data, see pages 3/24-3/29.
For dimension drawings, see page 3/30.
For schematic diagrams, see page 3/31.
Overload Relays
3RB2 / 3RB3 Solid-State Overload Relays
3RB20, 3RB21, 3RB30, 3RB31 up to 630A for standard applications
Product Category IEC
2
1
3RB20 solid-state overload relays
and stand-alone installation
2)3)
, CLASS 10 or CLASS 20 for direct mounting
1)2)
Features and technical specifications:
• Overload protection, phase failure protection and unbalance
protection
• Internal power supply
• Auxiliary contacts 1 NO + 1 NC
• Manual and automatic RESET
• Switch position indicator
• TEST function and self-monitoring
1) The relays with an Order No. ending with "0" are designed for direct mounting
to the contactor. With the matching terminal brackets (see Accessories) the
sizes S00 to S3 can also be installed as stand-alone units.
2) The relays with an Order No. ending with "2" are designed for direct
mounting and stand-alone installation. For 3TF68/3TF69 contactors, direct
mounting is not possible.
3) The relays with an Order No. ending with "1" are designed for stand-alone
installation.
4) Observe maximum rated operational current of the devices.
5) The relays with an Order No. with "X" in 10th position are equipped with a
straight-through transformer.
Size
Contactor
4)
Set current value
of the inverse-time delayed
overload trip
Spring Loaded Terminal
Order Number
Weight per
PU approx.
A kg
Size S00
1)
S00 0.1 … 0.4
3RB30 16- RB0 0.172
0.32 … 1.25
3RB30 16- NB0 0.172
1 … 4
3RB30 16- PB0 0.172
3 … 12 3RB30 16- SB0 0.172
0.172
Size S0
1)
3RB30 26-1QB0
S0 0.1 … 0.4
3RB30 26- RB0 0.250
0.32 … 1.25
3RB30 26- NB0 0.250
1 … 4
3RB30 26- PB0 0.250
3 … 12
3RB30 26- SB0 0.250
6 … 25 3RB30 26- QB0 0.250
3RB30 16-
@
RE0
3RB30 16-
@NE0
3RB30 16-
@
PE0
3RB30 16-
@
SE0
3RB30 16-
@TE0
3RB30 26-
@
RE0
3RB30 26-
@
NE0
3RB30 26-
@
PE0
3RB30 26-
@
SE0
3RB30 26-
@QE0
0.250
3RB30 26-
@VE0
Size S2
1)3)5)
3RB30 36-1UB0
S2 12 … 50
3RB30 36- UB0 0.360
3RB30 36- UW1
0.230
20 … 80
3RB30 36- WB0
0.360
3RB30 36- WW1 0.230
Size S3
1)3)5)
3RB30 46-1EB0
S3 12.5 … 50
3RB30 46- UB0 0.560
25 … 100
with busbar
with busbar
with busbar
with busbar
3RB30 46- EB0 0.560
with pass
with pass
with pass
through CT’s
with busbar
through CT’s
with busbar
through CT’s
3RB30 46- EW1 0.450
Size S6
2)5)
3RB20 56-1FW2
S6 50 … 200
with busbar
3RB20 56- FC2 1.030
with pass
through CT’s
3RB20 56-
@FW2 0.690
Size S10/S12
2)
3RB20 66-1MC2
S10/S12
and size 14
(3TF68/
3TF69)
55 … 250
3RB20 66-@GC2 1.820
160 … 630
3RB20 66-@MC2 1.820
Class 20
Class 10
Class 20
Class 10
2
1
Screw Terminal
Order Number
@
@
@
@
4 … 16 3RB30 16- TB0
@
@
@
@
@
@
10 … 40 3RB30 26- VB0
@
@
@
@
@
@
@
@
3RB30 16-1RB0
3RB30 36-@UD0
3RB30 36-
@UX1
3RB30 36-
@WD0
3RB30 36-
@WX1
3RB30 46-
@UD0
3RB30 46-
@ED0
3RB20 66-
@GF2
3RB20 66-
@MF2
3RB30 46-
@EX1
3RB20 56-
@FF2
3RB20 56-
@FX2
@