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Fuse ufast aR 500VAC/DC 450A blade cc71-90mm

CBFWH-450A

High speed fuse for protection of semiconductor relays, softstarters, AC variable speed drives, rectifiers etc. Since semiconductor have low thermal capacity, the protective device must react very fast. Can be installed in compact fuse disconnectors. Class aR, short-circuit protection only.

Pack size: 1/package
In stock (0 pcs)
Estimated delivery time, if not in stock: 42 days

Rated voltage
500VAC/DC
Rated current
450A
Utilization class
aR
Breaking capacity
200kA AC/50kA DC
Size
Contact blade L110mm/cc71-90mm
I²t, pre-arc/total
27400/127000 A²s at 500VAC
Power loss
74W
UL approval
UL recognized JFHR2, file E91958
CSA approval
CSA comp. Class1422-30, file 57787
Weight, each
0,41kg
Manufacturer's part number
FWH-450A

Fuseholder 1p 600V 600A Modular IP00
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CB1BS104
Pack: 1 pcs
Info

High speed fuses

For semiconductor protection. North American high speed fuses have normally a round body and contact blades for bolt-on fixing.

The fuses are normally UL and CSA approved as Application limited OCPD, ie only approved for specific applications according to NEC, National Electrical Code. One type of high speed fuse, approved for Branch circuit protection is available, see North American fuses class J.