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Contactor
Instructions
WARNING:
HAZARDOUS VOLTAGE
CAN CAUSE ELECTRICAL SHOCK
DISCONNECT POWER BEFORE PROCEEDING
WITH ANY WORK ON THIS EQUIPMENT.
Limited protection against contact with live parts
Degree of protection IP 20 to IEC 60529
!
Safe from finger touch to DIN VDE 0106, Part 100
Commissioning and maintenance by qualified personnel only.
Follow the operating instructions.
Installation
For dimension drawings (dimensions in mm) see
a.c. operation Fig. Ia,b
> Fig. Ib 3TF3470/3570 with non>detachable auxiliary contact blocks
d.c. operation Fig. IIa,b
> Fig. IIb 3TF3470/3570 with non>detachable auxiliary contact blocks
Minimum clearances from earthed parts: 6 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. III.
Connection
The terminal screws can be tightened with a power screwdriver.
Screwdriver blade width: 5 to 6 mm
Tighten all terminal screws even if not used.
Permissible cross>sections for main conductor:
one terminal
connected
2
Solid [mm
]
1
to 16
2
Finely stranded [mm
],
2.5 to 16
without end sleeve
2
Finely stranded [mm
],
1
to 16
with end sleeve
Stranded [mm
2
]
2.5 to 25
AWG wires,
14 to 3
solid and stranded
Terminal pin [mm
2
]
1
to 6
in accordance with
DIN 46231
Tightening torque
2
AND BURNS.
both terminals
connected
1
to 16
max. 16
max. 16
1.5 to 16
max. 10
max. 16
1
to 16
max. 10
max. 16
1.5 to 25
max. 10
max. 25
16 to 3
max. 6
max. 3
1
to 6
max. 6
max. 6
.
2.5 to 3.0 Nm/22 to 26.5 lb
in
Order No.: 3ZX1012>0TF02>1AA2
Permissible cross>sections for auxiliary conductor:
Solid
Finely stranded, with end sleeve
AWG wires
Tightening torque standard type
Tightening torque auxiliary contact block
Use 75 ∞C copper wire only.
For circuit diagram and position of connection terminals see Fig. IV.
*with indicator
For circuit diagram (NEMA) see Fig. A.
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.
When the system voltage is applied and the load is connected, do
!
not operate the contactor by pressing down the position indicator.
Maintenance
The following components can be replaced: magnet coil and single>pole
auxiliary contact block 3TX40. For Order Nos. see Catalog NSK and Fig. IV.
Only use of original spare parts ensures the operational safety of the
contactors.
HAZARDOUS VOLTAGE
CAN CAUSE ELECTRICAL SHOCK AND BURNS.
Disconnect power before proceeding with any
work on this equipment.
Cleaning
Remove dust by suction.
Auxiliary contact block
For replacement see Fig. VI.
Maximum number of auxiliary contact blocks of 3TF3411/3511>..:
A pneumatic time>delay relay or max. 2 auxiliary switches can be snapped
on front for the operating range 0.85 to 1.1 times the switching voltage U
Magnet coil
For coil replacement see.Fig. VII.
> Fig. VII a
a.c. coil
> Fig. VII 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
Weight
> a.c. operated
> d.c. operated
Permissible ambient temperature
> Operation
> Storage
Main circuit
Rated insulation voltage U i
Rated operational current
I e /AC>1 (55 ∞C)
3TF34, 3TF35
DIN VDE 0660, IEC 60947
2¥0.5 to 1 mm
2
2¥1 to 2.5 mm
2
2¥0.5 to 1 mm
2
2¥0.75 to 2,5 mm
2¥AWG 18 to 12
0.8 to 1.4 Nm/7 to 12 lb
0.8 to 1.1 Nm/7 to 10 lb
approx. 640 g
approx. 1210 g
> 25 to+55 ∞C
> 50 to+80 ∞C
AC 690 V
A 55
2
.
in
.
in
.
S
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