Contactor 3TF30, 3TF31
DIN VDE 0660, IEC 60947
Instructions Order No.: 3ZX1012>0TF00>1AA2
Installation
For dimension drawings (dimensions in mm) see
> Fig. I a a.c. operated
>
Fig. I b d.c. operated
1)
Minimum clearances from earthed parts
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. II a a.c. operated
> Fig. II b d.c. operated
Connection
The terminal screws can be tightened with a power screwdriver.
Screwdriver blade width: 5 to 6 mm
Permissible cross>sections for main and auxiliary conductors :
Solid 2¥0.5 to 1 mm
2
2¥1 to 2.5 mm
2
1¥4 mm
2
Finely stranded, with end sleeve 2¥0.75 to 2.5 mm
2
AWG wires 2¥AWG 18 to 12
Tightening torque standard type 0.8to 1.4 Nm/7 to 12 lb
.
in
Tightening torque auxiliary contact block 0.8to 1.1 Nm/7 to 10 lb
.
in
Use 75 ∞C copper wire only.
For circuit diagram and position of connection terminals see Fig. III.
For circuit diagram (NEMA) see Fig. A.
> Fig. III a 1NO
> Fig. III b 1NC
> Fig. III c without auxiliary contacts
Operation
Observe operating voltage (see rating plate of magnet coil).
The operating state of the contactor is shown by the position of the
contact carrier; see Fig. IV.
When the system voltage is applied and the load is connected,
do not operate the contactor by pressing down the contact
carrier.
Maintenance
The following components can be replaced: magnet coil and single>
pole auxiliary contact block 3TX40.
For Order Nos. see Catalog NSK.
Only use of original spare parts ensures the operational safety of the
contactors.
Cleaning
Remove dust by suction.
Auxiliary contact block
For replacement see Fig. V.
Magnet coil
For coil replacement see Fig. VI.
> Fig. VI a a.c. coil
> Fig. VI 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 > 25 to+55 ∞C
> Storage > 50 to+80 ∞C
Main circuit
Rated insulation voltage U
i
AC 690 V
Rated operational current I
e
/AC>1 (55 ∞C)
> Open model A 20
> Closed model A 16
Horsepower Ratings ( and ratings)
Rated insulation voltage U
i
AC 600 V
Suitable for use on a circuit capable of delivering not more than 5000 rms
symmetrical amperes, 600 V max.
Short>circuit protection:
2
!
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.
!
Rated operational voltage
Motor rating P
N
/AC>3
3TF30 3TF31
> 230 V
> 400 V
> 500 V
> 690 V
kW
kW
kW
kW
2.4
4
5.5
5.5
3.3
5.5
7.5
7.5
Degree of protection to
DIN VDE 0660 part 102 A/IEC 60947>4 **
Fuse>links Duty class gL
(gG)
3TF30 3TF31
> Assignment type 1
> Assignment type 2
> Non>welding I
K
f100¥I
e
> Circuit>breaker, C>char.
A
A
A
A
35
16
10
16
35
16
10
25
Rated
output
of
three>phase
motors
at 60 Hz
3TF30..>....1
NEMA/EEMAC
SIZE 00
3TF30 3TF31
Continuous current
(open and enclosed type)
A 9 20 20
> 200 V
> 230 V
> 460 V
> 575 V
hp
hp
hp
hp
1Ω
1Ω
2
2
2
3
5
7.5
3
3
7.5
10
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WARNING:
HAZARDOUS VOLTAGE
CAN CAUSE ELECTRICAL SHOCK
AND BURNS.
DISCONNECT POWER BEFORE PROCEEDING
WITH ANY WORK ON THIS EQUIPMENT.
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