Fuses
Instruction handbook bmaXX 5000
Document No.: 5.09021.19 Baumüller Nürnberg GmbH
278
of 346
11.2
Protection of the
devices
Use semiconductor fuses with the tripping characteristic aR (VDE 0636-201 / DIN EN
60269-2-1 / HD 630.2.1 54). In the event of a short circuit, these protect the mains rectifier
unit circuit on the input side against complete destruction, in order that it is possible to
repair the device.
Dimension suitable device protection fuses depending on peak current and the maximum
load integral i
2
t
off
.
1)
Use fuses that fall below the specified cutoff integral (i
2
t
off
) in the operating point.
11.2.1 BM5030
m Semiconductor fuses aR (device), type NH (for CE only)
m Class J fuses for UL applications
11.2.2 BM5031, BM5032
m Semiconductor fuses aR, type NH (for CE only)
m Class J fuses for UL applications
Device Maximum load integral
1)
BM5030 550 A²s
BM5031 / BM5032 1000 A²s
BM5043 / BM5044 9500 A²s
BM5074 / BM5075 300 000 A²s
BM5173 / BM5174 3000 A²s
BM519X 88 000 A²s
BM53XX Fuses integrated in the DC link
Siemens 3NC1 415: 15 A, 14x51 3NC1 420: 20 A, 14x51
Bussmann DFJ-15 U
Bussmann 00 25A/1000V: 170M2674 32A/1000V: 170M2675
40A/1000V: 170M2676
1 40A/660V: 170M3808 50A/660V: 170M3809
63A/660V: 170M3810
Ferraz Shawmut 000 25A/690V: 6.9 URD 000 PV 025 32A/690V: 6.9 URD 000 PV 032
40A/690V: 6.9 URD 000 PV 040 50A/690V: 6.9 URD 000 PV 050
Siemens 00 40A/660V: 3NE8 702
3NC1 415: 25 A, 14x51 for BM5031 3NC1 415: 40 A, 14x51 for BM5031
Size
Bussmann Class J: DFJ-25 U for BM5031 Class J: DFJ-35 U for BM5032
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