SIEMENS
5/18
Siemens IC 10 · 2017
Contactor Relays
3TH4 contactor relays, 8- and 10-pole
5
1)
If two different conductor cross-sections are connected to one clamping
point, both cross-sections must lie in one of the ranges specified.
Contactor relays
Type
3TH42
3TH43
General data
Dimensions (W x H x D)
• AC operation
mm
45 x 78 x 97
55 x 78 x 97
• DC operation
mm
45 x 78 x 130
55 x 78 x 130
Permissible mounting position
The contactor relays are designed for operation on a
vertical mounting surface.
• AC operation
• DC operation
Upright mounting position
AC and DC operation
Special version required
Mechanical endurance
Basic units
Operating cycles
30 million
Rated insulation voltage
U
i
(pollution degree 3)
V
690
Rated impulse withstand voltage
U
imp
kV
8
Protective separation
between coil and main contacts
acc. to IEC 60947-1, Appendix N
V
Up to 500
Permissible ambient temperature
• During operation
°C
-25 ... +55
• During storage
°C
-55 ... +80
Degree of protection
acc. to IEC 60529
• On front
IP20 (with screw terminals)
• Connecting terminal
IP20 (with screw terminals)
Touch protection
acc. to IEC 60529
Finger-safe (for screw terminals)
Shock resistance
• Rectangular pulse
-
AC operation
g
/ms
7.7/5 and 4.4/10
-
DC operation
g
/ms
9.3/5 and 5.4/10
• Sine pulse
-
AC operation
g
/ms
12/5 and 6.8/10
-
DC operation
g
/ms
14.7/5 and 8.5/10
Short-circuit protection
Short-circuit test
• With fuse links of operational class gG:
With short-circuit current
I
k
= 1 kA acc. to IEC 60947-5-1
-
LV HRC, type 3NA
A
16
-
DIAZED, type 5SB
A
16
-
NEOZED Type 5SE, quick
A
20
• With miniature circuit breaker
with short-circuit current
I
k
= 400 A acc. to IEC 60947-5-1
-
C Characteristic
A
16
-
B Characteristic
A
16
s
and
u
rated data
Basic units
Rated control supply voltage
U
s
Max. 600 V AC, 230 V DC (acc. to UL 240 V DC)
Rated voltage
600 V AC, 600 V DC
Switching capacity
A 600, P 600
Conductor cross-sections
Auxiliary conductors and coil terminals
(1 or 2 conductors can be connected)
Screw terminals
• Solid or stranded
mm
2
2 x (0.5 ... 1)
1)
; 2 x (1 ... 2.5)
1)
; 1 x 4
• Finely stranded with end sleeve
mm
2
2 x (0.75 ... 2.5)
• Terminal screw
M3.5
W
H
D
360°
22,5°
22,5°
NSB0_00478c
NSB0_00649a
22,5° 22,5°
90°
90°
NSB0_00477a
© Siemens AG 2016