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Contactor Relay
Instructions
DANGER
!
Hazardous voltage. Will cause death or serious injury.
Turn off and lock out all power supplying this device before working on
this device. Installation and maintenance work on this device may only
be carried out by an authorized electrician.
Installation
For dimension drawings see Fig. I (dimensions in mm).
> With screw terminals
> Fig. I a
a.c. operated
> Fig. I b
d.c. operated
> With tab connectors
> Fig. I c
a.c. operated
> Fig. I d
d.c. operated
Minimum clearances from earthed parts: 8 mm
Snap onto 35 mm standard mounting rail to DIN EN 50 022 or fix on a
plain surface with two M4 screws. With screw mounting, always use
plain washers and spring washers.
Cover the contactors during installation if foreign particles, such as
swarf, can fall onto them. Install contactors in a housing if they are
exposed to dirt, dust or aggressive atmospheres.
For permissible mounting positions see
> Fig. ¬ a
a.c. operated
> Fig. ¬ b
d.c. operated
Connection
The terminal screws can be tightened with a power screwdriver.
Screwdriver blade width: 5 to 6 mm
Permissible conductor cross>sections
Solid
Finely stranded, with end sleeve
Push>on receptacle B 2,8
AWG wires
Tightening torque
Use 75 ∞C copper wire only.
For circuit diagrams (examples) see Fig. √.
> Fig. III a
3TH40
4NO/3NO+1NC/2NO+2NC
> Fig. III b
3TH42
8NO/7NO+1NC/6NO+2NC
> Fig. III c
3TH43
10NO/9NO+1NC/8NO+2NC
Operation
Observe operating voltage (see rating plate of magnet coil).
The operating state of the contactor is shown at the position indicator;
see Fig. IV.
2
2
2¥0.5 to 1 mm
2
2¥1 to 2.5 mm
2
1¥4 mm
2
2¥0.75 to 2.5 mm
2
2¥0.3 to 1.5 mm
2¥AWG 18 to 12
.
0.8 to 1.4 Nm/7 to 12 lb
in
3TH40, 3TH42, 3TH43
Maintenance
The following components can be replaced: magnet coil
For Order Nos. see Catalog.
Only use of original spare parts ensures the operational safety of the
contactors.
Cleaning
Remove dust by suction.
Magnet coil
For coil replacement see
> Fig. V a
a.c. coil
> Fig. V b
d.c. coil
Ensure that the pole faces of the magnet coil are clean. Do not use grease
solvents or sharp objects for cleaning.
Technical Data
Permissible ambient temperature
> Operation
> Storage
Rated insulation voltage U i
Rated operational current I e /AC>12/AC>1
With screw terminals
Rated operational voltage
> 230 V
> 240 V
> 400 V
> 415 V
> 500 V
> 690 V
Rated operational voltage
> 24 V
> 48 V
> 110 V
> 220 V
> 440 V
> 600 V
With tab connectors
Rated operational voltage
> 230 V
> 240 V
> 400 V
> 415 V
> 500 V
Rated operational voltage
> 24 V
> 48 V
> 110 V
> 220 V
> 440 V
Short>circuit protection:
> Fuse>links
NEOZED and DIAZED, gL (gG)
> Circuit>breaker, C>char.
For further data and accessories see Catalog.
> 25 to+55 ∞C
> 50 to+80 ∞C
AC 690 V
A
16
Rated operational
current I e /AC>15/AC>11
A
10
A
10
A
6
A
4
A
4
A
2
Rated operational
current I e /DC>13/DC>11
A
10
A
5
A
0.9
A
0.45
A
0.25
A
0.2
Rated operational
current I e /AC>15/AC>11
A
8
A
8
A
6
A
4
A
4
Rated operational
current I e /DC>13/DC>11
A
8
A
5
A
0.9
A
0.45
A
0.25
A
16
A
16
3ZX1012-0TH01-1BA1
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