Datasheet

— finely stranded
— with core end processing
1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)
— without core end processing
1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)
Connectable conductor cross-section
● for auxiliary and control contacts
— solid
mm² 0.5...2.5
— finely stranded
— with core end processing
mm² 0.5...2.5
— without core end processing
mm² 0.5...2.5
AWG number as coded connectable conductor cross
section
● for auxiliary and control contacts
20...12
Type of electrical connection for auxiliary and control
current circuit
ring cable connection
Design of the thread of the connection screw of the
auxiliary and control contacts
M3
Wire stripping length of the cable
● for main contacts
mm 7
● for auxiliary and control contacts
mm 7
Tightening torque for auxiliary and control contacts
with screw-type terminals
N·m 0.5...0.6
Tightening torque [lbf·in] for auxiliary and control
contacts with screw-type terminals
lbf·in 4.5...5.3
Certificates/ approvals:
General Product Approval EMC Declaration of
Conformity
Test
Certificates
Typprüfbescheinigu
ng/Werkszeugnis
other
Umweltbestätigung
Further information
Short-circuit protection, design of the fuse link
https://www.automation.siemens.com/cd-static/material/info/3RF21_eng.pdf
Information- and Downloadcenter (Catalogs, Brochures,…)
http://www.siemens.com/industrial-controls/catalogs
Industry Mall (Online ordering system)
http://www.siemens.com/industrymall
3RF21 90-3AA22 Changes preserved
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05.10.2015 © Copyright Siemens AG