Fuji Electric BW32AAG - 3-12 MCCBs for High Frequency Circuits

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3
Selection and application
3-10 Protecting SSCs using MCCBs or MMSs
Rated voltage Motor capacity
(kW)
SSC Type Manual motor starter (MMS) Fuse
Type Breaking capacity (kA) Type Breaking capacity (kA)
250V AC
230V AC
3-phase
0.2
0.4
0.75
1.5
2.2
3.7
5.5
7.5
7.5
SS03
SS08
SS20
SS30
SS40
SS50
SS80
SS802
SS120
BMSRSB-1P6
BM3RSB-2P5 *1
BM3RSB-004
BM3RSB-6P3
BM3RSB-010
BM3RSB-016
BM3RSB-025
BM3RSB-032
BM3RSB-032
100
100
100
100
100
100
50
50
50
CR2L(S)-10
CR2L(S)-10
CR2L(S)-30
CR2L(S)-50
CR2L(S)-75
CR2L(S)-100
CR2L-140
CR2L-175
CR2L-175
100
100
100
100
100
100
100
100
100
400V AC
3-phase
1.5
2.2
3.7
5.5
7.5
15
15
SS30H
SS30H
SS30H
SS50H
SS50H
SS80H
SS120H
BM3RSB-004
BM3RSB-6P3
BM3RSB-010
BM3RSB-013
BM3RSB-016
BM3RSB-032
BM3RSB-032
100
100
100
50
50
50
50
CR6L-30
CR6L-50
CR6L-50
CR6L-75
CR6L-100
CR6L-200
CR6L-200
100
*2
100
*2
100
*2
100
*2
100
*2
100
*2
100
*2
Notes: Indicates SSCs mounted on standard cooling fins.
*1 Overload protection is not available in some regions.
*2 Breaking capacity at 600V AC.
3-10-2 Motor circuits
Table 3-24 shows various combinations that are available for
motor circuit SSC control. Fig. 3-33 shows that a manual motor
starter (MMS) protects regions A and B while a current-limiting
fuse protects region C. This combination can protect the SSC
from anything from overloading to short-circuiting.
Table 3-24 Protecting SSCs for heater circuits using MCCB
(short-circuit region)