SIEMENS
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Siemens IC 10 · 2017
Power Contactors for Switching Motors
Accessories and Spare Parts for SIRIUS 3RT Contactors and SIRIUS 3RH2 Contactor Relays
Accessories
3
3RA28 function modules for mounting on 3RT2 contactors and 3RH2 contactor relays
Type
3RA2811
3RA2831
3RA2812
3RA2832
3RA2816
Mounting on contactors of size
S00, S0
S2, S3
S00, S0
S2, S3
S00 to S3
Function
For direct-on-line starting
For star-delta
(wye-delta) starting
ON-delay
OFF-delay
with control signal
General data
Dimensions
(basic unit with mounted function module)
See 3RT2 contactors (pages 3/23, 3/29, 3/34, 3/39) and
3RH2 contactor relays (page 5/8)
Rated insulation voltage
U
i
Pollution degree 3
Overvoltage category III
V AC
300
Rated impulse withstand voltage
U
imp
kV AC
4
Overvoltage protection
Varistor integrated
Recovery time
ms
50
150
Minimum ON period
ms
--
35
--
Setting accuracy
With reference to upper limit of
scale
Typ.
15 %
Repeat accuracy
Max.
1 %
Degree of protection
acc. to IEC 60529
IP20
Permissible ambient temperature
• During operation
°C
-25 ... +60
• During storage
°C
-40 ... +80
Shock resistance
Half-sine acc. to IEC 60068-2-27
g
/ms
15/11
Vibration resistance
acc. to IEC 60068-2-6
Hz/mm
10 ... 55/0.35
Electromagnetic compatibility (EMC)
IEC 61000-6-2, IEC 61000-6-4, IEC 61812-1, IEC 60947-4-1
Permissible mounting position
Any
(for the mounting position of 3RT2 contactors,
see pages 3/23, 3/29, 3/34, 3/39
;
for the mounting position of 3RH2 contactor relays,
see page 5/7
)
Control side
Operating range of excitation
0.85 ... 1.1 x
U
s
,
0.95 ... 1.05 times the rated frequency
Rated power
W
1
• Power consumption at 230 V AC, 50 Hz
VA
1
2
Load side
Mechanical endurance
Operating
cycles
100 x 10
6
10 x 10
6
Electrical endurance
• With 3RT2028 contactor
Operating
cycles
100 000
--
• At AC-15, 250 V, 3 A
Operating
cycles
--
100 000
Switching frequency
for load
• With
I
e
at 230 V AC
h
-1
2 500
--
• With 3RT2 contactor at 230 V AC
h
-1
2 500
--
Residual current
Max.
mA
5
--
--
Voltage drop
With conducting output
Max.
VA
3.5
--
--
DIAZED fuse protection
Operational class gG
A
--
4
Conductor cross-sections
Connection type
(1 or 2 conductors can be connected)
Screw terminals
• Solid
mm
2
1 x (0.5 ... 4), 2 x (0.5 ... 2.5)
--
• Finely stranded with end sleeve (DIN 46228-1)
mm
2
1 x (0.5 ... 2.5), 2 x (0.5 ... 1.5)
--
• AWG cables, solid or stranded
AWG
2 x (20 ... 14)
--
• Terminal screws
M3 (for standard screwdriver size 2 or Pozidriv 2)
--
• Tightening torque
Nm
0.8 ... 1.2
--
Connection type
(1 or 2 conductors can be connected)
Spring-type terminals
• Operating devices
mm
3.0 x 0.5
--
• Solid
mm
2
2 x (0.25 ... 1.5)
--
• Finely stranded with end sleeve (DIN 46228-1)
mm
2
2 x (0.25 ... 1.5)
--
• Finely stranded without end sleeve
mm
2
2 x (0.25 ... 1.5)
--
• AWG cables, solid or stranded
AWG
2 x (24 ... 16)
--
© Siemens AG 2016