Data sheet
3RV1421-1CA10
Circuit breaker size S0 For transformer protection A-release 1.8...2.5
A Short-circuit release 52 A Screw terminal Standard switching
capacity !!! Phased-out product !!! Successor is SIRIUS 3RV2
Preferred successor type is >>3RV2411-1CA10<<
Product brand name
Product designation
Design of the product
SIRIUS
circuit breaker
for transformer protection
General technical data
Product extension
● Auxiliary switch
Power loss [W] total typical
Surge voltage resistance rated value
Protection class IP
● on the front
Shock resistance
Mechanical service life (switching cycles)
● of the main contacts typical
Continuous current rated value
100 000
2.5 A
IP20
25g / 11 ms
Yes
6 W
6 000 V
Ambient conditions
Installation altitude at height above sea level
● maximum
2 000 m
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Main circuit
Number of poles for main current circuit
Adjustable pick-up value current of the current-
dependent overload release
Operating voltage
● rated value
● at AC-3 rated value maximum
Operating current
● at AC-3
— at 400 V rated value
Operating frequency
● at AC-3 maximum
15 1/h
2.5 A
690 V
690 V
3
1.8 ... 2.5 A
Auxiliary circuit
Number of CO contacts
● for auxiliary contacts
0
Protective and monitoring functions
Product function
● Ground fault detection
● Phase failure detection
(trip class)
Maximum short-circuit current breaking capacity (Icu)
● at AC at 240 V rated value
● at AC at 400 V rated value
● at AC at 500 V rated value
● at AC at 690 V rated value
100 kA
100 kA
100 kA
8 kA
No
Yes
CLASS 10
Short-circuit protection
Design of the overcurrent release and short-circuit
release
thermomagnetic
Installation/ mounting/ dimensions
● (mounting position)
● (mounting type)
(height)
Width
Depth
Required spacing
● with side-by-side mounting
— Backwards
— at the side
0 mm
0 mm
any
screw and snap-on mounting onto 35 mm standard mounting rail
according to DIN EN 50022
97 mm
45 mm
96 mm
Connections/Terminals
Product function
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● removable terminal for auxiliary and control
circuit
Type of electrical connection
● for main current circuit
● for auxiliary and control current circuit
Arrangement of electrical connectors for main current
circuit
Type of connectable conductor cross-sections
● for main contacts
— solid
— stranded
— finely stranded with core end processing
● at AWG conductors for main contacts
No
screw-type terminals
screw-type terminals
front side
2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)
2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)
2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)
2x (14 ... 10)
Certificates/approvals
General Product Approval
Declaration of Conformity
Miscellaneous
Test Certificates
Special Test Certi-
ficate
Type Test Certific-
ates/Test Report
Marine / Shipping
Marine / Ship-
ping
other
Miscellaneous
Confirmation
Further information
Information- and Downloadcenter (Catalogs, Brochures,…)
http://www.siemens.com/industrial-controls/catalogs
Industry Mall (Online ordering system)
https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RV1421-1CA10
Cax online generator
http://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RV1421-1CA10
Service&Support (Manuals, Certificates, Characteristics, FAQs,...)
https://support.industry.siemens.com/cs/ww/en/ps/3RV1421-1CA10
Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)
http://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RV1421-1CA10&lang=en
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Characteristic: Tripping characteristics, I²t, Let-through current
https://support.industry.siemens.com/cs/ww/en/ps/3RV1421-1CA10/char
Further characteristics (e.g. electrical endurance, switching frequency)
http://www.automation.siemens.com/bilddb/index.aspx?view=Search&mlfb=3RV1421-1CA10&objecttype=14&gridview=view1
25
∅5
SIEMENS
45
97
45
5
33
91
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