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BETA Protecting
Miniature Circuit Breakers
5
SK9 circuit breaker terminals
1/53
Siemens ET B1 · 10/2008
1
*
You can order this quantity or a multiple thereof.
■
Overview
Circuit breaker terminals are used for short-circuit protection or
for protection against overloading and short-circuiting in auxiliary
and control circuits after control transformers. All terminals are
designed for 2 wires. The terminal block labeling accessories
are used for inscription.
■
Benefits
•
Integration of line protection switching function in the terminal
technology of control cabinets in compact 12 mm design
•
Display of switching position or the "Tripped" state for the fast
detection of faults
•
Switching/isolating function facilitates fault locating
•
Device versions with integral auxiliary switch (AS) signal the
contact position
•
Device versions with floating through-type connection parallel
to the switching contacts facilitate line connection.
These devices are listed as "Supplementary Protectors" according
to UL 1077 (UL Recognized Components) and CSA 235
(
CSA Component Accepted).
■
Technical specifications
5
SK9 011-1KK2.,
5
SK9 011-2KK2.
5
SK9 011-4KK2.,
5
SK9 011-6KK2.,
5
SK9 011-8KK2.
Standards
DIN VDE 0660-101, IEC/EN 60947-2, UL 1077
Rated operational voltage
Max.
AC
250
V AC at 50/60 Hz
DC
60
V DC
Operational voltage
Min.
V AC/DC 24
Power loss
Max.
W
1
Rated impulse withstand voltage
kV
4
Degree of pollution
Acc. to EN 60664-1
3
Rated current
of through-type connection
A
16
Rated operational current
of auxiliary switch
A
1
Mechanical service life
Operations 16 000
Electrical service life
on average, with rated load
Operations
8000
Polarity with direct current
Any
Mounting position
Any
Resistance to vibrations
10
g at 70 Hz
Enclosures
With thermoplastic insulating body
Screw connection at both ends for 2 conductors each
Enclosed on both sides
Touch protection
Acc. to EN 50274-1
Yes
Terminal size
mm
2
1.5
2.5
Terminal tightening torque,
recommended
Nm
0.8
Conductor cross-sections
•
Solid
mm
2
1
or 2 × (0.75 ... 1.5)
•
Finely stranded, with end sleeve
mm
2
1
or 2 × (1 ... 2.5)
•
U
AWG 14-12
Yes
--
•
s
AWG 14
Yes
--
Stripped length
mm
10
© Siemens AG 2008