SIEMENS
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Siemens IC 10 · 2017
Switching Devices – Contactors and Contactor Assemblies
Contactor Relays and Relays
Introduction
5
■
Overview
Note:
For safety characteristics for contactors,
see "Standards and
Approvals", from page 16/10 onwards
.
More information
Home page,
see www.siemens.com/sirius
Industry Mall,
see www.siemens.com/product?3RH_3TH
Conversion tool, e.g. from 3RH11 to 3RH21,
see
www.siemens.com/sirius/conversion-tool
The advantages at a glance
Size
Type
S00
3RH21
S00
3RH22
3TH42
3TH43
3TH2
Article No.
Page
SIRIUS 3RH2 contactor relays
4-pole
• Screw or spring-type terminals
3RH21
5/13, 5/14
8-pole
3RH22
5/13, 5/14
4-pole, latched
3RH24
5/13, 5/14
Coupling contactor relays
• Coils for control by PLC
3RH21
5/15, 5/16
Contactor relays for
railway applications
• Coils with extended voltage range
3RH21
4/69
3TH4 contactor relays
8-pole
• Screw terminals
3TH42
5/21
10-pole
3TH43
5/22
Contactor relays for
railway applications
• Coils with extended voltage range
3TH42
4/72
3TH2 miniature contactor relays
4-pole
• Screw terminals, flat connectors and solder pin connections
3TH20
5/29, 5/30
8-pole
• Screw terminals
3TH22
5/29
4-pole, latched
• Screw terminals
3TH27
5/29
Accessories for SIRIUS 3RH2 contactor relays
Auxiliary switch blocks
• On front
3RH29,
3RA281.
from 3/87,
3/100
• Lateral
3RH29
3/97
Function modules
(direct-on-line starting,
star-delta (wye-delta) starting)
• On front
3RA281., 3RA283.
3/105
Surge suppressors
• On front
3RT2916
3/102, 3/103
Additional load modules
• On front
3RT2916
3/118
© Siemens AG 2016