Fuses
Instruction handbook b maXX BM5500, BM5600, BM5700
Document No.: 5.13008.10 Baumüller Nürnberg GmbH
282
of 314
11.2
11.2.7 Fuses BM557X
m Semiconductor fuses aR (device)
BM557X, design type NH
BM5572:
BM5573, BM5773:
DANGER!
Danger to life from electric current!
Parts, which are under tension are perilous. Damage in isolation or damage of single
parts can be can be highly dangerous.
Therefore:
The use of semiconductor fuses is obligatory at the power supply connection of
BM557X devices. Semiconductor fuses are required in the connection between
brake resistor and device except the user assures the short-circuit protection of re-
sistor and cable.
Siemens 2 500A/1000V: 3NA3 334-0B u 560A/1000V: 3NA3 335 u
710A/900V: 3NE3 337-8 u
Size
NOTE
The 710 A fuse is recommended if the BM5572 is operated constantly at nominal
power and/or peak power is required frequently, because the 710 A fuse provides
higher thermal reserve compared with 500 A/560 A fuses and therefore the risk of
fuse tripping at normal run (without real error) is reduced.
Siemens 2 800A/800V: 3NE3 338-8 u
Size
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