Siemens AC-21A - User Manual
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SIRIUS Innovations Supplement 2012
3
3/2
Introduction
3RT Power Contactors
for Switching Motors
3/3
General data
3/5
3RT20 contactors, 3-pole, 3 ... 25 HP
3RA23, RA24 Contactor Assemblies
3RA23 Reversing Contactor
Assemblies
3/28
3RA23 complete units, 3 ... 25 HP
3/34
Components for customer assembly
3RA24 Contactor Assemblies for Wye-
Delta Starting
3/36
3RA24 complete units, 5.5 ... 22 kW
3/43
Components for customer assembly
3RT, 3RH Contactors
for Special Applications
3RT23 Contactors for Switching
Resistive Loads (AC-1)
3/45
4-pole, 4 NO, 18 ... 42 A
3RT25 Contactors
3/49
4-pole, 2 NO + 2 NC, 5... 15 HP
Contactors with Extended
Operating Range 0.7 ... 1.25 ×
U
s
,
for Railway Applications
3/53
3RH21 contactor relays
3/55
3RT20 motor contactors,
7.5 ... 25 HP
3RH Contactor Relays
3/58
3RH2 contactor relays, 4- and 8-pole
3RH Control, Coupling Relays
3/67
3RH24 latched control relays,
4-pole
3/68
3RH21 coupling relays for switching
auxiliary circuits, 4-pole
3RT Coupling Contactors
3/71
3RT20 coupling contactors (interface)
for switching motors, 3-pole,
3 ... 20 HP
Function Modules for Mounting
onto SIRIUS 3RT2 Contactors
3/76
Introduction
3/77
SIRIUS function modules
3/78
- For direct-on-line starting via parallel
wiring
3/79
- For reversing starting /
wye-delta starting
3/81
Function modules for IO-Link
3/85
Function modules for AS-Interface
Accessories and Spare Parts
For 3RT2, 3RH2 Contactors and Contactor
Relays
3/89
General data
3/93
Auxiliary switch blocks
3/98
Auxiliary switch blocks, delayed
3/99
Delay and latching blocks
3/100
Surge suppressors
3/101
Other function blocks
3/102
Terminals, covers, adapters, connectors
3/105
Accessories
3/110
Spare parts for 3RT2 contactors
Technical Information
can be found at
www.siemens.com/industrial-controls/
support
under Product List:
- Technical specifications
under Entry List:
- Updates
- Download
- FAQ
- Manuals
- Characteristics
- Certificates
and at
www.siemens.com/industrial-controls/
configurators
- Configurators
SIRIUS Controls –
Contactors and
Contactor Assemblies
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