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BETA Protecting
Miniature Circuit Breakers
SHU, 5SP3 main miniature circuit breakers
1/50
Siemens ET B1 · 10/2008
1
*
You can order this quantity or a multiple thereof.
■
Overview
Selective main miniature circuit breakers are used as circuit
breakers at meter panels or as group miniature circuit breakers
in distribution board applications.
Characteristic E is adapted to the special application requirements
for cascade circuits between melting fuses and miniature circuit
breakers.
The devices can be screwed onto a mounting plate or attached
to a 40 mm busbar by means of an adapter. Using a mounting
plate, they can be mounted on a standard mounting rail according
to EN 60715.
■
Benefits
•
Improved current limitation characteristics increases plant
protection, thanks to the selective main miniature circuit
breakers supporting downstream miniature circuit breakers.
•
High and safe selectivity between sub-distribution and meter
panel ensures a continued power supply to unaffected circuits
in the event of a fault, thus improving plant availability.
•
The selective main miniature circuit breaker prevents the
affected circuit from being reconnected until the fault is
eliminated, thus providing greater operating safety.
•
No previous knowledge required for operation of the selective
main miniature circuit breakers. This ensures fast and safe
disconnection and reconnection of loads.
•
Meets all the requirements of TAB 2007.
■
Technical specifications
5
SP3
Standards
DIN VDE 0645
Rated voltage U
n
/
U
e
• 1-
pole
V AC
230/400
•
Multipole
V AC
400
Operational voltage
Min.
V AC
110
Max.
V AC
440
Rated frequency
Hz
50 ... 60
Rated current
I
n
/
I
e
A
16 ... 100
Rated insulation voltage U
i
V AC
690
Rated switching capacity
I
c
n
A
25000
Insulation coordination
•
Overvoltage category
IV
•
Degree of pollution
3
Impulse withstand voltage U
imp
kV
6
Impact resistance
30
g, at least 3 impacts, impact duration 11 ms
Resistance to vibrations
2
g, 20 frequency cycles 5 ... 150 ... 15 Hz
Switching position indication
OFF = green, ON = red
Main conductor characteristics
Acc. to EN 60204-1
Yes
Handle end position,
sealable
Yes
Device depth
mm
92
Degree of protection
IP20, with connected conductors
Mains connection
Any
Mounting position
Any
Mounting
With accessories on 35-mm standard mounting rail or busbar or screw fixing
Service life
on average, with rated load
Operations 20000
Connection
Saddle terminals at both ends
Conductor cross-sections
•
Solid
mm
2
2.5 ... 50
•
Stranded
mm
2
2.5 ... 70
•
Finely stranded, with end sleeve
mm
2
2.5 ... 50
Storage temperature
°
C
-40 ...
+70
Ambient temperature
°
C
-25 ...
+55
© Siemens AG 2008