SIRIUS System Manual
GWA 4NEB 430 0999-02b
3-1
3
3RT1/3RH1 contactors
Section Subject Page
3.1 Specifications/regulations/approvals 3-3
3.1.1 Utilization categories 3-3
3.1.2 Positively driven operation 3-7
3.1.3 Safe isolation 3-7
3.1.4 Explanation of terms 3-9
3.2 Device description 3-10
3.2.1 Actuating systems 3-12
3.2.2 Short-circuit protection of the SIRIUS contactors 3-12
3.2.3 Operation 3-13
3.2.3.1 General information 3-13
3.2.3.2 Contact reliability 3-14
3.3 Application and areas of use 3-20
3.3.1 3RT10 contactors with 3 main contacts for switching
motors
3-20
3.3.2 3RT1446 contactors with 3 main contacts for switching
resistive loads (AC-1)
3-21
3.3.3 3RT13 and 3RT15 contactors with 4 main contacts 3-22
3.3.4 3RT16 capacitor-switching contactors for switching capaci-
tors
3-25
3.3.5 Contactors with an extended operating range 3-26
3.3.5.1 Contactors with an extended operating range
(3RH11...-0LA0/3RT10...-0LA0)
3-27
3.3.5.2 Contactors with an extended operating range
(3RH1122-2K.40, 3RT1017-2K.4., 3RT102.-3K.40)
3-29
3.3.6 3RH1 auxiliary contactors 3-29
3.3.7 3RT10 contactor relays for switching motors (interface) and
3RH11 contactor relays for switching auxiliary circuits
3-30
3.3.8 Contactor combinations for reversing 3-32
3.3.9 Star-delta combinations 3-41
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