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
3-9
Regulations IEC 61 140 (replacing VDE 0106 Part 101/IEC 536) lists basic requirements
that can be met using safe isolation between circuits in electrical equip-
ment.
Basic requirements are, for example:
• Double or reinforced insulation
• Protective screening
• Combination of double or reinforced insulation and protective screening
The insulation must be resistant to aging throughout the expected service
life.
Circuits without protective extra-low voltage or functional extra-low voltage
do not require safe isolation.
Safe isolation in the
case of 3RT1 and 3RH1
contactors
If the conducting paths of a contactor are operated with different voltages,
the requirements for safe isolation must be met.
In the case of the 3RT1 and 3RH1 contactors, safe isolation is ensured up to
the following voltage:
• The values for the safe isolation between the main power circuit and the
auxiliary circuit/coil connection are found in the following tables:
I Main power circuit - Control circuit
II Main power circuit - Auxiliary circuit
III Control circuit - Auxiliary circuit
S00
Contactor/Con-
trol relay
S0 S2 S3 S6 to S12
3-pole devices 690 V* 400 V 400 V 690 V 690 V
4-pole devices 400 V 400 V 400 V 690 V
—
*with unused auxiliary circuit ———
S00 S0 S2 S3 S6 to S12
Integ. auxiliary circuit 400 V
— ———
Front mount auxiliary
circuit.
690 V* 500 V 500 V 500 V 690 V
Side mount auxiliary
circuit.
No 690V 500V 690V 690V
*4-pole auxiliary contact block
—
S00 S0 S2 S3 S6 to S12
Integ. auxiliary circuit 400 V
— ———
Front mount auxiliary
circuit..
690 V* 690 V 690 V 690 V 690 V
Side mount auxiliary
circuit.
No 500V 690V 690V 690V
*4-pole auxiliary contact block
—