User Guide
Table Of Contents
- 3 3RT1 contactors/ 3RH1 control relays
- 3.1 Specifications/regulations/approvals
- 3.2 Device description
- 3.3 Application and areas of use
- 3.3.1 3RT10 contactors with 3 main contacts for switching motors
- 3.3.2 3RT14 contactors with 3 main contacts for switching resistive loads (AC-1)
- 3.3.3 3RT12 Vacuum contactors
- 3.3.4 3RT13 and 3RT15 contactors with 4 main contacts
- 3.3.5 3RT16 capacitor contactors
- 3.3.6 Contactors with an extended operating range
- 3.3.7 3RH1 control relays
- 3.3.8 3RT10 contactor relays for switching motors (interface) and 3RH11 control relays for switching auxiliary circuits
- 3.3.9 3RA13 Contactor combinations for reversing
- 3.3.10 3RT14 Wye-delta combinations
3RT1 contactors/3RH1 control relays
SIRIUS System Manual
GWA 4NEB 430 0999-02 DS 01
3-45
Frame sizes S0 to S3
Terminal markings in acc. with EN 50 012
Contactors 3RT102.-, 3RT103.-, 3RT104.-3K.44-0LA0
With front-mounted 4-pole auxiliary switch block 3RH1921-1HA22
Fig. 3-21: Contactors with an extended operating range, terminal markings
The NC contact at 21/22 is needed for the wiring of the series resistor
Circuit diagram for wiring of the series resistor
Fig. 3-22: Contactors with an extended operating range, circuit diagram
3.3.6.2 Contactors with electronic control module frame sizes S0 to S3 (3RT10..-.X40-0LA2)
Design The contactors are controlled using a line side electronic control module.
These ensure an operating range of 0.7 to 1.25 U
S
at an ambient tempera-
ture of 70 °C. The coil has a integrated varistor to dampen the switching
overvoltage of the coil. This causes an increase contact opening time com-
pared to the standard contactors of about 2 ms to 5 ms. The contactors
with an electronic control module are also offered as a complete device.
Auxiliary contacts The mounting of auxiliary contacts corresponds to the corresponding stan-
dard contactors.
Installation These contactor designs can be mounted side-by-side in frame sizes S0 to
S3 at ambient temperatures up to 70 °C.
Ambient temperature The allowable ambient temperature for the operation of the contactors (at
the full operational range of the coils) is - 40 °C to + 70 °C. At constant oper-
ation with temperatures of > + 55 °C there is a reduction of mechanical ser-
vice life, the loadability of the main conducting paths and the reliable switch-
ing frequency.
13513
14
6
42A2( )
A1 21
22
31
32
43
44
NSB00561a
U
(+)
2 NO + 2 NC contacts
Identification number 22
A1
A1
22
(-)
A2
NSB00562a
R
V
21
(-)(+)
A2