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ALPHA 8HP Molded-Plastic Distribution Systems
Single Enclosures
Enclosures with in-built 3VL circuit breakers
9/26
Siemens ET A1 · 10/2008
9
■
Design
ALPHA 8HP, diagram of enclosure with 3VL circuit-breakers
Features
• Enclosure complete with in-built 3VL circuit-breaker, door-
coupling rotary operating mechanism in black and terminals
• Terminal covers and connecting bars for safe use with
maximum possible rated current
• All circuit-breakers in size 3 enclosure with intermediate frame
• Opaque cover
• Emergency-Stop operating mechanisms on request
Mounting instructions
• Caution: The distribution board must be installed in accor-
dance with the data in the table
• Minimum volume (see table) of the flange-mounted distribu-
tion board on the enclosure with 3VL to accommodate the
switching pressure on tripping (the supplementary enclosure
does not have to be an empty enclosure)
• Values valid for rated voltage of 415 V AC
Legend:
Dark blue identifies enclosures with 3VL.
I2_13956
1
2
4
3
2a
2b
2b
1
2
2a
2b
3
4
Enclosure base part
Assembly kit for
circuit breaker
Circuit breaker
Door-coupling
rotary operating
mechanism
Intermediate frame
Cover
opaque
Rated current I
n
Short-circuit strength I
k
10 kA
20 kA
27 kA
40 kA
63 A
2
Min. enclosure vol-
ume 65 dm
3
(e.g. enclosure with
3VL plus
size 2 top with high
cover)
3
Min. enclosure vol-
ume 90 dm
3
(e.g. enclosure with
3VL plus
size 3 top with inter-
mediate frame)
3
Min. enclosure vol-
ume 90 dm
3
(e.g. enclosure with
3VL plus
size 3 top with inter-
mediate frame)
3
Min. enclosure vol-
ume 90 dm
3
(e.g. enclosure with
3VL plus
size 3 top with inter-
mediate frame)
3
3
3
3
100 A
2
Min. enclosure vol-
ume 65 dm
3
(e.g. enclosure with
3VL plus
size 2 top with high
cover)
3
Min. enclosure vol-
ume 90 dm
3
(e.g. enclosure with
3VL plus
size 3 top with inter-
mediate frame)
3
Min. enclosure vol-
ume 90 dm
3
(e.g. enclosure with
3VL plus
size 3 top with inter-
mediate frame)
4
Min. enclosure vol-
ume 135 dm
3
(e.g. enclosure with
3VL plus
size 4 top with inter-
mediate frame)
3
3
3
3
160 A
2
Min. enclosure vol-
ume 65 dm
3
(e.g. enclosure with
3VL plus
size 2 top with high
cover)
3
Min. enclosure vol-
ume 90 dm
3
(e.g. enclosure with
3VL plus
size 3 top with inter-
mediate frame)
3
Min. enclosure vol-
ume 90 dm
3
(e.g. enclosure with
3VL plus
size 3 top with inter-
mediate frame)
4
Min. enclosure vol-
ume 135 dm
3
(e.g. enclosure with
3VL plus
size 4 top with inter-
mediate frame)
3
3
3
3
250 A
2
Min. enclosure vol-
ume 65 dm
3
(e.g. enclosure with
3VL plus
size 2 top with high
cover)
4
Min. enclosure vol-
ume 135 dm
3
(e.g. enclosure with
3VL plus
size 4 top with inter-
mediate frame)
4
Min. enclosure vol-
ume 135 dm
3
(e.g. enclosure with
3VL plus
size 4 top with inter-
mediate frame)
3
Min. enclosure vol-
ume 180 dm
3
(e.g. enclosure with
3VL plus
size 4 top, plus size 3
transverse, with inter-
mediate frame)
4
3
3
3
3
N
© Siemens AG 2008
