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J-42 Fiches technique(PDF) 1 Page - Eaton All Rights Reserved.

No de pièce J-42
Description  Class H/K, J and R ferrule and blade fuse reducers
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J-42 Fiches technique(HTML) 1 Page - Eaton All Rights Reserved.

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Technical Data 1118
Effective February 2017
Supersedes June 2016
Catalog symbols:
NO._ (Class H/K)
NO._-R (Class R)
J-_ (Class J)
A range of Bussmannseries fuse reducers for
Class H/K, J and R ferrule and blade fuses.
Fuse reducers install on fuse ferrules or blades to
permit the application of smaller size fuses than
those for which the fuse blocks or holders are
The following conditions and limitations apply to
the fuse reducers listed in this data sheet:
There are no reducers to fit a 250 V fuse into a
600 V block or a 600 V fuse into a 250 V block.
Fuse reducers for fuse blocks or holders
intended for current-limiting fuses will not
accept non-current limiting fuses.
There are no reducers for Class T fuses.
By design, Class L fuses do not require
Further limitations are detailed in the catalog
number tables.
Class H/K, J and R ferrule and blade fuse reducers
250 V (Class H, K and R)
600 V (Class H, J, K and R)
Amps 30-600 A
Short-circuit Current Rating (SCCR) up to fuse
interrupting rating
Agency information
UL® Listed, Guide IZZR, File E12853
CSA® Certified, Class 6225-01, File 47235
RoHS compliant
† See catalog number tables for exceptions.
Reducers fit into most panels or switches
including the dead-front type
Strong contact is maintained both mechanically
and electrically
Class J fuse reducers*
For Bussmann series LPJ and JKS fuses.
Fuse size
Amp size of
fuse block or
disconnect switch
Catalog no.
Up to 30 A
60 A
Up to 30 A
100 A
35 to 60 A
100 A
35 to 60 A
200 A††
65 to 100 A
200 A††
65 to 100 A
400 A††
110 to 200 A
400 A††
110 to 200 A
600 A††
225 to 400 A
600 A††
These reducers are not CSA Certified or UL Listed.
†† Not for bolt-on fuse applications.
††† Not compatible with JKS fuses.
Note: Carton quantity - 10 pair.

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