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Idiomas disponibles
AC contactor
Instructions
Operating instructions for AC operation;
for DC operation (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 see
Fig. I
with screw terminals;
Fig. Ia
1)
Minimum clearances from earthed parts.
Fix on a plain surface with two M6 screws - max. tightening torque 10.5 Nm.
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 (only 3TF50)
in accordance with DIN EN 50 027
- see Fig. IIIa
2
Finely stranded [mm
],
1)
with and without end sleeve
2
Stranded [mm
]
AWG wires,
solid and 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 25 mm long
ferrules to DIN 46228 Part 1 must be used.
Crimping tools PZ35 and PZ50 from Weidmüller are recommended for
the end sleeves.
Before mounting the box terminals (see
removed (see
).
Fig. VII/1, 2, 3
Without box terminal
- see Fig. IIIc
1 or 2 conductors can be connected
3TF50
2
16 to 70
Finely stranded [mm
],
with cable lug
2
25 to 70
Stranded [mm
],
with cable lug
15 × 3
Terminal bars
AWG wires,
3 to 2/0
solid and stranded
M6 × 20
Terminal screws
Tightening torque
6 to 8 Nm/
52 to
70 lb.in
Perrmissible conductor cross-sections for auxiliary terminals:
Solid
Finely stranded, with end sleeve
Terminal pin
(in accordance with DIN 46231)
Push-on receptacle B2.8
AWG wires, solid and stranded
Stripped length
Tightening torque
2
(dimensions in mm).
with tab connectors
Fig. Ib
Fig. II
.
25 to 50
25 to 50
25 to 50
25 to 70
25 to 70
25 to 70
3 to 2/0
3 to 2/0
3 to 2/0
22 to 25 mm/1 in
6 to 8 Nm/52 to 70 lb.in
Fig. IIIb
), the arc chute must be
3TF51
3TK50
35 to 95
35 to 95
50 to 120
50 to 120
20 × 3
20 × 3
1/0 to 250MCM 1/0 to 250MCM
M8 × 25
M8 × 25
10 to 14 Nm/
10 to 14 Nm/
89 to
89 to
124 lb.in
124 lb.in
2 × 0.5 to 1; 2 × 1 to 2.5; 1×4 mm
2 × 0.75 to 1.5 mm
2
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.: 3ZX1012-0TF06-1AA2
For installation of auxiliary conductor terminal 3TX7500-0A (accessory for
3TF50) see
Fig. IIIa
For circuit diagram and position of connection terminals see
2NO + 2NC;
Fig. IVa
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
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
the contact facings are so badly eroded that the carrier material is visible
25 to 50
(
Fig. VII/4a
), all contacts must be replaced.
For replacement of contacts see
25 to 70
It is not necessary to disconnect the main conductors. Check the arc chute
3 to 2/0
and replace it if necessary.
With the arc chute removed, the contactor is mechanically interlocked.
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
at
-230 V
-240 V
-400 V
-415 V
-500 V
-690 V
-1000 V
Rated operational current
-I
/AC-1 (55 °C)
e
2
-I
/AC-3
e
-I
/AC-3
e
3TF50, 3TF51, 3TK50
DIN VDE 0660, IEC 60947
.
4NO + 4NC
Fig. IVb
Fig. A
.
; for extension see
Fig. VI/1, 2, 3
). Check main contacts (
Fig. VII/1, 2, 3
.
Fig. VII/5, 6, 7
.
Fig. VIII
i
AC-3
3TF50
kW
37
kW
37
kW
55
kW
63
kW
76
kW
100
kW
55
3TF50
to 690 V
A
160
to 500 V
A
110
at 690 V
A
110
English
Fig. IV
.
.
Fig. VI/4, 5, 6
). If neces-
Fig. VII/4
approx. 3.3 kg
-25 to +55 °C
-50 to +80 °C
IP 00 (IEC 60529)
AC 1000 V
AC-3
AC-1 (55 °C)
3TF51
3TK50
45
72
47
79
75
125
78
136
98
164
100
217
55
139
3TF51
3TK50
160
190
140
85
110
85
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