Brochure

SIRIUS
Siemens Industry, Inc. Industrial Control Product Catalog 2017
3/23
3
OVERlOAd RElAYS
3RB21 / 3RB31 solid-state overload relays for direct mounting
1)2)
and stand-alone installation
2)3)
, CLASS 5, 10, 20 and 30 adjustable
Features and technical specifications:
• Overload protection, phase failure protection and unbalance
protection
• Internal ground fault detection (activatable)
• Internal power supply
• Auxiliary contacts 1 NO + 1 NC
• Manual and automatic RESET
• Electrical remote RESET integrated
• 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
Weight per PU
approx.
Screw Terminal
Order Number
Spring Loaded Terminal
Order Number
A
kg
Size S00
1)
3RB31 13-4RB0
S00 0.1 … 0.4
3RB31 13-4RB0
0.175
0.32 … 1.25
3RB31 13-4NB0 0.175
1 … 4
3RB31 13-4PB0
0.175
3 … 12
3RB31 13-4SB0
4 … 16 3RB31 13-4TB0
0.175
0.175
Size S0
1)
3RB31 23-4QB0
S0 0.1 … 0.4
3RB31 23-4RB0 0.215
0.32 … 1.25
3RB31 23-4NB0 0.215
1 … 4
3RB31 23-4PB0 0.215
3 … 12
3RB31 23-4SB0
0.215
6 … 25
3RB31 23-4QB0
10 … 40 3RB31 23-4VB0
0.215
0.215
Size S2
1)3)5)
3RB31 33-4WB0
S2 12 … 50 3RB31 33-4UB0
0.360
3RB31 33-4UW1 0.230
Size S3
1)3)5)
3RB31 43-4EB0
S3 12.5 … 50
3RB31 43-4UB0 0.560
25 … 100
with busbar
with busbar
3RB31 43-4EB0 0.560
with pass
through CT’s
with busbar
with pass
through CT’s
3RB31 43-4EW1 0.450
Size S6
2)5)
3RB21 53-4FC2
S6 50 … 200
with busbar
3RB21 53-4FC2 1.030
with pass
through CT’s
3RB21 53-4FW2 0.690
Size S10/S12
2)
3RB21 63-4MC2
S10/S12
and size 14
(3TF68/
3TF69)
55 … 250
3RB21 63-4GC2 1.820
160 … 630
3RB21 63-4MC2
1.820
3RB31 13-4RE0
3RB31 13-4NE0
3RB31 13-4PE0
3RB31 13-4SE0
3RB31 13-4TE0
3RB31 23-4RE0
3RB31 23-4NE0
3RB31 23-4PE0
3RB31 23-4SE0
3RB31 23-4QE0
3RB31 23-4VE0
3RB31 33-4UD0
3RB31 33-4UX1
3RB31 43-4QD0
3RB31 43-4ED0
3RB31 43-4EX1
3RB21 53-4FF2
3RB21 53-4FX2
3RB21 63-4GF2
3RB21 63-4MF2
20 … 80 3RB31 33-4WB0 0.360
3RB31 33-4WW1 0.230
with busbar
with pass
through CT’s
3RB31 33-4WD0
3RB31 33-4WX1
For accessories, see pages 3/49-3/50.
For description, see pages 3/18-3/21.
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