The Siemens Circuit Breaker is high quality!
Circuit breaker size S2 For transformer protection A-release 18...25
A Short-circuit release 520 A Screw terminal Standard switching
capacity !!! Phased-out product !!! Successor is SIRIUS 3RV2
Preferred successor type is >>3RV2431-4DA10<<
product brand name SIRIUS
product designation circuit breaker
design of the product for transformer protection
General technical data
product extension
auxiliary switch Yes
power loss W for rated value of the current
at AC in hot operating state 14.5 W
at AC in hot operating state per pole 4.8 W
surge voltage resistance rated value 6 000 V
protection class IP
on the front IP20
shock resistance 25g / 11 ms
mechanical service life (switching cycles)
of the main contacts typical 50 000
continuous current rated value 25 A
Ambient conditions
installation altitude at height above sea level
maximum
2 000 m
ambient temperature
during operation -20 ... +60 degrees centigrade
during storage -50 ... +80 degrees centigrade
during transport -50 ... +80 degrees centigrade
Main circuit
number of poles for main current circuit 3
adjustable pick-up value current of the currentdependent
overload release
18 ... 25 A
operating voltage
rated value 690 V
at AC-3 rated value maximum 690 V
operating current
at AC-3
at 400 V rated value 25 A
operating power
at AC-3
at 400 V rated value 11 kW
operating frequency
at AC-3 maximum 15 1/h
Auxiliary circuit
number of CO contacts
for auxiliary contacts 0
Protective and monitoring functions
product function
ground fault detection No
phase failure detection Yes
trip class CLASS 10
maximum short-circuit current breaking capacity (Icu)
at AC at 240 V rated value 100 kA
at AC at 400 V rated value 50 kA
at AC at 500 V rated value 12 kA
at AC at 690 V rated value 5 kA
Short-circuit protection
design of the overcurrent release and short-circuit
release
thermomagnetic
Installation/ mounting/ dimensions
mounting position any
mounting type screw and snap-on mounting onto 35 mm standard mounting rail
according to DIN EN 50022
width 55 mm
depth 149 mm
required spacing
with side-by-side mounting
backwards 0 mm
at the side 0 mm
Connections/ Terminals
product function
removable terminal for auxiliary and control
circuit
No
type of electrical connection
for main current circuit screw-type terminals with box terminals
for auxiliary and control circuit screw-type terminals
arrangement of electrical connectors for main current
circuit
front side
type of connectable conductor cross-sections
for main contacts
solid 2x (0.75 ... 16 mm?)
stranded 2x (0.75 ... 25 mm?), 1x (0.75 - 35 mm?)
finely stranded with core end processing 2x (0.75 ... 16 mm?), 0.75 ... 25 mm?
at AWG conductors for main contacts 2x (18 ... 2), 1x (18 ... 2)