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Contactor
Instructions
Operating instructions for AC operation and DC operation:
DC economy connection see operating instructions 3ZX1012-0TF36-1AA1
WARNING:
HAZARDOUS VOLTAGE
CAN CAUSE ELECTRICAL SHOCK
AND BURNS.
DISCONNECT POWER BEFORE PROCEEDING
WITH ANY WORK ON THIS EQUIPMENT.
Installation
For dimension drawings (dimensions in mm) see
AC operation:
with screw terminals
Fig. Ia
with tab connectors
Fig. Ib
DC operation:
with screw terminals
Fig. Ic
1)
Minimum clearances from earthed parts
Fix on a plain surface with two M4 screws - max. tightening torque 3.1Nm.
Always use plain washers and spring washers.
For permissible mounting positions see
Connection
Tighten all terminal screws even if not used.
Permissible conductor cross-sections for main terminals:
With box terminal
in accordance with DIN EN 50 027
III
- see Fig.
a
2
Finely stranded [mm
],
1)
with end sleeve
2
Finely stranded [mm
],
1)
without end sleeve
2
Solid [mm
]
2
Stranded [mm
]
AWG wires, stranded
Stripped length
Tightening torque
After alignment or bending back of connected leads, check the tightening
torques of the clamping screws.
1)
The ends of non-stranded cables must be twisted or 18 mm long end
sleeves to DIN 46228 Part 1 must be used.
Before mounting the box terminals (see
removed (see
Fig. VII/1, 2, 3
).
Without box terminal
III
- see Fig.
c
1 or 2 conductors can be connected
2
Finely stranded [mm
], with cable lug
2
Stranded [mm
], with cable lug
Terminal bars
AWG wires, solid and stranded
Terminal screws
Tightening torque
2)
With the maximum conductor cross-section, the terminal cover
3TX7466-0A is required for adhering to the phase clearance.
Perrmissible conductor cross-sections for auxiliary terminals:
Solid
Finely stranded, with end sleeve
Terminal pin
(in accord. with DIN 46231)
Push-on receptacle B2.8
AWG wires, solid and stranded
Stripped length
Tightening torque
2
Fig. IIa AC operation
DC operation
Fig. IIb
6 to 35
2.5 to 35 6 to 25
10 to 35
2.5 to 35 10 to 25
6 to 16
2.5 to 16 6 to 16
16 to 50
16 to 50
16 to 35
3 to 1/0
18 to 1/0 max. 2x1/0 max. 2x1/0
18 to 20 mm/¾ in
4 to 6 Nm/36 to 52 lb.in
Fig. IIIb
), the arc chute must be
3TF46/3TF47
2)
10 to 35
10 to 50
2)
12 × 3
7 to 1/0
M6 × 20
4 to 6 Nm/36 to 52 lb.in
2 × 0.5 to 1; 2 × 1 to 2.5; 1 × 4 mm
2 × 0.5 to 1; 2 × 0.75 to 2.5 mm
2 × 1 to 1.5 mm
2
2 × 0.3 to 1.5 mm
2
2 × 18 to 12
10 mm/0.4 in
0.8 to 1.4 Nm/7 to 12 lb.in
Order No.: 3ZX1012-0TF03-1AA2
For installation of auxiliary conductor terminal 3TX7500-0A (accessory) see
. For circuit diagram and position of connection terminals see
Fig. IIIa
AC operation
:
DC operation:
For circuit diagram (NEMA) see
Use 75° C copper wire only.
Operation
Observe operating voltage (see rating plate of magnet coil).
The operating state of the contactor is shown at the position indicator; see
Fig. V
.
After a short circuit the main contacts and the arc chute must be checked.
Maintenance
The following components can be replaced: Main contacts, arc chute,
magnet coil, auxiliary contact blocks. - For Order Nos. see Catalog NSK.
Only use of original spare parts ensures the operational safety of the contac-
tors.
Cleaning
Remove dust by suction.
Auxiliary contact block
For replacement see
For extension (AC operation only) see
Arc chute and main contacts
Remove arc chute (
sary, separate slightly welded contacts with a screwdriver.
Dark or rough contacts can still function. Do not refinish or grease them. If
2.5 to 25
the contact facings are so badly eroded that the carrier material is visible
(
), all contacts must be replaced.
Fig. VII/4a
2.5 to 25
For replacement of contacts see
It is not necessary to disconnect the main conductors. Check the arc chute
2.5 to 16
and replace it if necessary.
With the arc chute removed, the contactor is mechanically interlocked.
16 to 35
Coil excitation is not permitted under these conditions.
Magnet coil
For coil replacement see
Ensure that the pole faces of the magnet coil are clean. Do not use grease
solvents or sharp objects for cleaning.
Technical Data
Weight
Permissible ambient temperature
- Operation
- Storage
Degree of protection
Main circuit
Rated insulation voltage U
Rated power AC-3
at
-230 V
-240 V
-400 V
-415 V
-500 V
-690 V
2
Rated operational current
2
-I
/AC-1 (55 °C)
e
-I
/AC-3
e
3TF46, 3TF47
DIN VDE 0660, IEC 60947
Fig. IVa
2NO + 2NC;
Fig. IVa
2NO + 2NC
Fig. A
.
Fig. VIa/1, 2, 3.
Fig. VIb/4, 5, 6
). Check main contacts (
Fig. VII/1, 2, 3
.
Fig. VII/5, 6, 7
Fig. VIIIa
AC operation
Fig. VIIIb
DC operation
approx. 1.4 kg - AC operation
approx. 2.5 kg - DC operation
i
kW
kW
kW
kW
kW
kW
to 690 V
A
to 690 V
A
English
.
Fig. IV
Fig. IVb
4NO + 4NC
.
). If neces-
Fig. VII/4
-25 to +55 °C
-50 to +80 °C
IP 00 (IEC 60529)
AC 1000 V
3TF46
3TF47
15
18,5
15
20
22
30
25
34
30
41
39
56
80
90
45
63
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