Technical Data 1048
Effective August 2016
Supersedes December 2015
BUSSMANN
SERIES
DFJ
Class J high speed fuses
Agency information
•
UL
®
Listed Standard 248-8, Class J,
Guide JDDZ, File E4273
CSA
®
Certified, C22.2 No. 248.8,
Class 1422-02, File 53787
RoHS compliant
CE
•
•
•
Features:
•
Easily coordinated with existing and new
variable speed drives and electric controllers.
Standard Class J dimensions allow using
readily available fuse blocks, holders and
switches.
Has the lowest let-through energy of any
branch circuit overcurrent protective device.
•
•
Catalog symbol:
•
Typical applications
•
•
DFJ-_
Protection of AC and DC drives
Equipment using power semiconductor
devices
Description:
The Bussmann
™
series DFJ drive fuse is a
high speed, current-limiting fuse that provides
maximum protection for AC and DC drives
and controllers and meet NEC
®
branch circuit
protection requirements. The drive fuse has the
lowest I
2
t of any branch circuit fuse to protect
power semiconductor devices that utilize
diodes, GTOs, SCRs and SSRs.
Catalog numbers (amps):
DFJ-1
DFJ-2
DFJ-3
DFJ-4
DFJ-5
DFJ-6
DFJ-8
DFJ-10
DFJ-12
DFJ-15
DFJ-17.5
DFJ-20
DFJ-25
DFJ-30
DFJ-35
DFJ-40
DFJ-45
DFJ-50
DFJ-60
DFJ-70
DFJ-80
DFJ-90
DFJ-100
DFJ-110
DFJ-125
DFJ-150
DFJ-175
DFJ-200
DFJ-225
DFJ-250
DFJ-300
DFJ-350
DFJ-400
DFJ-450
DFJ-500
DFJ-600
Specifications:
Ratings
•
Volts
•
600Vac (or less)
•
Carton quantity:
Amp rating
1–60
70–200
225–600
Carton qty.
10
5
1
450Vdc (or less, 15-600A)
•
•
Amps 1-600A
IR
•
•
200kA RMS Sym.
100kA DC
Technical Data 1048
Effective August 2016
DFJ Class J high speed fuses
Electrical characteristics:
Catalog
number
DFJ-15
DFJ-20
DFJ-25
DFJ-30
DFJ-35
DFJ-40
DFJ-50
DFJ-60
DFJ-70
DFJ-80
DFJ-90
DFJ-100
DFJ-110
DFJ-125
DFJ-150
DFJ-175
DFJ-200
DFJ-225
DFJ-250
DFJ-300
DFJ-350
DFJ-400
DFJ-450
DFJ-500
DFJ-600
Amps
15
20
25
30
35
40
50
60
70
80
90
100
110
125
150
175
200
225
250
300
350
400
450
500
600
I
2
t (A
2
Sec) @ 600Vac/100kA
Pre-arc
Clearing
4
110
8
365
12
610
20
1000
55
1100
90
1900
140
2800
290
6000
450
3100
650
4600
1010
7200
1460
10,500
1710
9500
3580
20,000
5080
28,000
6310
35,000
9850
54,500
11,420
51,000
17,000
74,500
23,500
103,000
38,800
170,000
62,200
272,000
44,600
270,000
79,500
480,000
138,000
830,000
Watts
loss
4.1
4.0
4.9
5.5
6.8
8.6
8.7
8.5
12
13
13
13
17
15
19
23
24
29
30
36
39
40
56
52
57
Dimensions - in:
2.25˝
0.50˝ 0.81˝
2.38˝
0.63˝ 1.06˝
4.63"
(± 0.03)
3.63"
2.63"
.75"
1.13"
.13"
1" .28"
.43"
70A to 100A
5.75"
(± 0.03)
4.38"
3.0"
110A to
200A
.43"
7.13"
(± 0.03)
5.25"
3.38"
225A to
400A
.58"
1.13"
.28"
1.38"
1.63"
.19"
Recommended fuse blocks and holders:
Fuse
amps
up to 30
up to 30
35-60
up to 30
35-60
up to 30
35-60
70-100
110-200
225-400
450-600
up to 30
35-60
70-100
110-200
225-400
CH30J1_
CH60J1_
JT60030_
JT60060_
JM60030-1_
JM60060-1CR
JM60100-1CR
JM60200-1CR
JM60400-1CR
JM60600-1CR
JM60030-1MW_
JM60060-1MW_
JM60100-1MW14
JM60200-1MW16
JM60400-1MW16
JM60400-1MW26*
1-Pole
—
2-Pole
—
CH30J2_
CH60J2_
—
—
JM60030-2_
JM60060-2CR
JM60100-2CR
JM60200-2CR
JM60400-2CR
JM60600-2CR
JM60030-2MW_
JM60060-2MW_
JM60100-2MW14
JM60200-2MW16
JM60400-2MW16
JM60400-2MW26*
3-Pole
JP60030-3_
CH30J3_
CH60J3_
—
—
JM60030-2_
JM60060-3CR
JM60100-3CR
JM60200-3CR
JM60400-3CR
JM60100-3CR
JM60030-3MW_
JM60060-3MW_
JM60100-3MW14
JM60200-3MW16
JM60400-3MW16
JM60400-3MW26*
“Pyramid” blocks (data sheet No. 1108)
CH holders (data sheet No. 2144)
.41"
1.63"
1.88"
2.11"
.25"
Safety J™ holders (data sheet No. 1152)
JM modular fuse blocks (data sheet No. 3192 and 10289)
8.0"
(± 0.03)
6.0"
3.75"
.53"
2"
2.13"
2.5"
.38"
450A to
600A
.74"
JM power distribution fuse blocks (data sheet No. 10192)
* Lineside dual box lug terminal.
2
Eaton.com/bussmannseries
DFJ Class J high speed fuses
Technical Data 1048
Effective August 2016
Time-current curves — average melt
Current in amps
Time in seconds
Current in amps
Eaton.com/bussmannseries
3
Technical Data 1048
Effective August 2016
DFJ Class J high speed fuses
Current-limitation curves
Peak current in amps
Available RMS current in amps
The only controlled copy of this data sheet is the electronic read-only version located on the Eaton network drive. All other copies of this
document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical
information that will help the end user with design applications. Eaton reserves the right, without notice, to change design or construction
of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice,
any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible
applications.
Eaton
1000 Eaton Boulevard
Cleveland, OH 44122
United States
Eaton.com
Bussmann Division
114 Old State Road
Ellisville, MO 63021
United States
Eaton.com/bussmannseries
© 2016 Eaton
All Rights Reserved
Printed in USA
Publication No. 1048 – BU-SB131065
August 2016
Eaton, Bussmann and Low-Peak are
valuable trademarks of Eaton in the US
and other countries. You are not permitted
to use the Eaton trademarks without prior
written consent of Eaton.
CSA is a registered trademark of the
Canadian Standards Group.
NEC is a registered trademark of the
National Fire Protection Association, Inc.
UL is a registered trademark of the
Underwriters Laboratories, Inc.
For Eaton’s Bussmann series
product information,
call
1-855-287-7626
or visit:
Eaton.com/bussmannseries
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