Bussmann
®
Worldwide Circuit Protection Solutions
World’s leading supplier of fuses and fusible protection
systems, Bussmann continues its 88-year history of blazing new
trails of innovative technologies. Maker of the industry’s first
truly global product line, each item is backed by an efficient
worldwide network of distribution, customer service and
technical support. Bussmann products include the most
extensive circuit protection solutions approved for use in
a variety of major standards: UL, CSA, IEC. . . Not to
mention both European (DIN, British Standard) and
North American styled fuses for a wide range of
applications: industrial motor protection, power
conversion, medium voltage, power distribution,
telecommunications network equipment, electronics,
and automotive. Manufacturing operations in the U.S.,
Denmark, and the United Kingdom have earned ISO
9000 certification. Bussmann customers are assured
of only the utmost quality across every product line.
Knowledgeable. Responsive. Customer focused.
Bussmann continues to set the standard for circuit
protection solutions around the world.
This catalog is intended to present product data and provide technical information that will
help the end user with design application. Bussmann reserves the right, without notice,
to change design or construction of any products and to discontinue or limit distribution
of any products. Bussmann also reserves the right to change or update, without notice,
any technical information contained in this catalog. Once a product has been selected, it
should be tested by the user in all possible applications.
©2002 Cooper Bussmann
Printed in the U.S.A.
Bussmann
®
Section Guide
Page
1
2
3
4
5
6
7
8
9
10
Electrical – Power Fuses
Electronic – PC Board and Small Dimension Fuses
Fuseblocks and Holders
Disconnect Switches
High Speed Fuses
Medium Voltage Fuses and Fuse Links
Telecommunications Protection
British, European, & Canadian Standard Industrial Fuses
Fuse Accessories, Displays, Kits, Etc.
Fuse Technology
Glossary of Terms
Index
1
29
41
99
123
157
175
189
202
210
231
233
Now you can get current information about Bussmann products at anytime,
using
BIF
(Bussmann Information FAX) or visit us on the
World Wide Web.
BIF
is a simple to use automated fax response system. All you need is a touch-
tone telephone and a fax machine to get complete product specifications when
you want it. Data sheet numbers are located throughout this catalog. To get a
detailed data sheet on the product of your choice, simply dial
636-527-1450
and request the document number listed. In a matter of minutes a data sheet
will be faxed to you. It’s that simple.
Data sheets can also be downloaded from the Internet. The Bussmann web site
is continuously updated with our newest products and latest data on circuit pro-
tection solutions. Visit us often at
http://www.bussmann.com
©2002 Cooper Bussmann
Printed in U.S.A.
i
Bussmann
Information Fax ~
636.527.1450
Bussmann
Worldwide Web ~
http://www.bussmann.com
Bussmann
®
Table of Contents
Electrical - Power Fuses
General Data (Selection Guide, Dimensional Data) . . . . . . .1-3
Cubefuse (TCF & TCFH) . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Class L Fuses (KRP-C_SP, KTU, KLU) . . . . . . . . . . . . . . .6-8
Class RK1 Fuses
(LPN-RK_SP, LPS-RK_SP, KTN-R, KTS-R) . . . . . .9-11, 15
Class RK5 Fuses (FRN-R, FRS-R, DLN-R, DLS-R) . . . .12-14
One-Time Fuses (NON, NOS) . . . . . . . . . . . . . . . . . . . . . .16
Class J Fuses (LPJ_SP, JKS) . . . . . . . . . . . . . . . . . . . .17-18
Class T Fuses (JJN, JJS) . . . . . . . . . . . . . . . . . . . . . . . . .19
Class G Fuses (SC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Class CC Fuses (LP-CC, FNQ-R, KTK-R) . . . . . . . . . . .21-22
Supplementary Fuses (Midget fuses
⁄‹Ω£™∑
diameter) . . . .23-25
Plug Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26-27
Cable Limiters and Welder Limiters . . . . . . . . . . . . . . . . . .28
Disconnect Switches
Disconnects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Fusible . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99-105, 121
Non-Fusible . . . . . . . . . . . . . . . . . . . . . . . . . . . .106-112
Fusible, Enclosed . . . . . . . . . . . . . . . . . . . . . . . .113-116
Non Fusible, Enclosed . . . . . . . . . . . . . . . . . . . .117-120
Power Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
High Speed Fuses
North American Style . . . . . .
European Style Square Body
British Standard BS88 . . . . .
Ferrule Style . . . . . . . . . . . .
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.123-130
.131-147
.148-150
.151-158
Medium Voltage Fuses
BBU Boric Acid Fuse . . . . . . . . . . . . . . . . . . . . . . . .157-158
R-Rated Fuses (Motor Circuit Protection) . . . . . . . . .161-164
E-Rated Fuses (Transformers Protection) . .159-160, 165-168
DIN Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169
Potential Transformer Fuses . . . . . . . . . . . . . . . . . . . . . .170
Medium Volt, Fast Acting . . . . . . . . . . . . . . . . . . . . . . . .171
BS2692-1 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172
Fuse Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
Electronic Fuses
PC Board and Small Dimension
5mm x 15mm Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
5mm x 20mm Fuses . . . . . . . . . . . . . . . . . . . . . . . . . .30-31
⁄Ω¢∑
Diameter Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . .32-36
Pin Indicating Type Fuses . . . . . . . . . . . . . . . . . . . . . . .37-38
Actuators and Limiters . . . . . . . . . . . . . . . . . . . . . . . . . . .38
In-Line Fuses/Fuseholders . . . . . . . . . . . . . . . . . . . . . . . .39
Blade-Type Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Telecommunications
Fused Disconnect Switch
Telpower Fuses . . . . . . . .
Indicating Fuses & Holders
Specialty Fuses . . . . . . . .
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.175-181
.182-184
.185-186
.187-188
Fuseblocks, Holders and Terminal
Blocks
Overcurrent Protection Modules . . . . . . . . . . . . . . . . . .41-45
Fuse Covers . . . . . . . . . . . . . . . . . . . . . . . . . .46 Fuseblocks
Class H, K, and R . . . . . . . . . . . . . . . . . . . . . . .47-52, 63
Class J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53-55, 63
Semiconductor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Class J (Touch Safe) . . . . . . . . . . . . . . . . . . . . . . . .57-58
Class T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59-62
Class CC, G and Type M . . . . . . . . . . . . . . . . . . . . . . .64
for
⁄Ω¢∑
and
⁄‹Ω£™∑
Diameter Fuses . . . . . . . . .66, 83-84, 86
for 5mm Diameter Fuses . . . . . . . . . . . . . . . . . . . . . . .85
Modular Fuseblocks and Fuseholders . . . . . . . . . . . . .65, 67
Box Cover Units for Plug Fuses . . . . . . . . . . . . . . . . . . . . .68
PC Board Mount Fuseholders . . . . . . . . . . . . . . . . . . .69-70
Panel Mount Fuseholders . . . . . . . . . . . . . . . . .71-75, 78-79
In-Line Fuseholders . . . . . . . . . . . . . . . . . . . . .76-77, 80-82
PC Board Fuseclips . . . . . . . . . . . . . . . . . . . . . . . . . . .87-88
Terminal Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89-93
Rail Mount Fuseholders . . . . . . . . . . . . . . . . . . . . . . . . . .94
Power Distribution Blocks . . . . . . . . . . . . . . . . . . . . . .95-97
British, European, & Canadian
Standard Industrial Fuses
CSA Type P and D Fuses . . . . . . . . . . . . . . . . . . . . . . . .190
HRC Industrial Fuses . . . . . . . . . . . . . . . . . . . . . . . .191-195
BS88 Low Voltage Industrial Fuses . . . . . . . . . . . . . .196-197
DIN Style Type D and Neozed Fuses . . . . . . . . . . . . . . . .198
HRC Fuseholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199
NH Fuse System . . . . . . . . . . . . . . . . . . . . . . . . . .200-201
Fuse Accessories, Displays,
Kits, Etc.
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .202-204
Display Racks and Service Kits . . . . . . . . . . . . . . . .205-209
Fuse Technology
Fuseology . . . . . . . . . . . . . . . . . . . . . . .
Fuse Diagnostic Chart . . . . . . . . . . . . . .
Time-Current & Current Limitation Curves
Glossary of Terms . . . . . . . . . . . . . . . . .
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.210-215
.216-218
.219-230
.231-232
Index
ii
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233-234
General Data — Selection Chart
Bussmann
®
Buss Fuse Selection Chart (600 Volts or Less)
Circuit
Load
Ampere Fuse
Rating Type
Symbol
Voltage
Rating (a-c)
Class
Interrupting
Rating
(KA)
300
Remarks
Page
Conventional Dimensions—Class RK1, RK5 (0-600A), L (601-6000A)
All type loads
(optimum
overcurrent
protection).
Motors, welder,
transformers,
capacitor banks
(circuits with heavy
inrush currents).
0-600A
LOW-PEAK
®
(dual-element,
time-delay)
LOW-PEAK
®
(time-delay)
FUSETRON
®
(dual-element,
time-delay)
DURA-LAG
TM
(dual-element,
time-delay)
LIMITRON
®
(time-delay)
LPN-RK_SP
LPS-RK_SP
KRP-C_SP
FRN-R
FRS-R
DLN-R
DLS-R
KLU
KTN-R
KTS-R
LIMITRON
®
(fast-acting)
KTU
600V
L
200
250V
600V
600V
250V
600V
250V
600V
600V
250V
600V
RK1††
All-purpose fuses.
Unequaled for combined
short-circuit and
overload protection.
(Specification grade product)
Moderate degree of
current limitation. Time-delay
passes surge currents.
9-11
601 to
6000A
0
to
600A
0
to
600A
601 to
4000A
L
RK5††
300
200
6-7
12
13
14
200,000A or 300,000A Interrupting Rating (rms symmetrical)
Current Limiting
RK5
200
L
RK1††
200
200
Main,
Feeder
and
Branch
All-purpose fuse. Time-
delay passes surge-currents.
Same short-circuit protection
as LOW-PEAK fuses but
must be sized larger for
circuits with surge-currents;
i.e., up to 300%.
A fast acting, high
performance fuse.
8
15
Non-motor loads
(circuits with no
0
heavy inrush
to
currents).
600A
LIMITRON fuses
_____
particularly suited for 601 to
circuit breaker
6000A
protection.
8
Reduced Dimensions For Installation in Restricted Space—Class J(0-600A), T(0-1200A), CC(0-30A), G(0-60A)
All type loads
(optimum
overcurrent
protection).
LOW-PEAK
®
(dual-element
time-delay)
0
to
600A
0 to
1200A
LPJ_SP
600V
J
300
All-purpose fuses.
Unequaled for combined
short-circuit and overload
protection. (Specification
grade product)
Very similar to KTS-R
LIMITRON, but smaller.
The space saver (⁄Ω
£
the size
of KTN-R/KTS-R).
Rejection feature
17
__________
Non-motor loads
(circuits with no
heavy inrush
currents).
Motor loads
(circuits with
heavy in-rush
currents.)
Non-motor loads
(circuits with no
heavy in-rush
currents.)
Control transformer
circuits and lighting
ballasts; etc.
General purpose;
i.e., lighting
panel boards.
Miscellaneous
LIMITRON
®
(quick acting)
T-TRON
TM
JKS
JJN
JJS
LP-CC
600V
300V
600V
600V
J
T
CC
200
200
200
18
19
21
0 to 30A LOW-PEAK
®
(time-delay)
0 to 30A LIMITRON
®
(fast-acting)
KTK-R
600V
CC
200
Very compact (⁄‹Ω
£™∑ ≈ 1⁄Ω™∑);
rejection feature.
22
Branch
0 to 30A TRON
®
(time-delay)
1 to 20A SC
25 to 60A
0 to
600A
0
to
30A
ONE-TIME
FUSTAT
®
(dual-element,
time-delay)
FUSETRON
®
(dual-element,
time-delay)
Buss Type W
FNQ-R
600V
CC
200
Excellent for control
transformer protection.
Current limiting;
⁄‹Ω£™∑
dia.
≈
varying
lengths per amp rating.
Forerunners of
the modern
Base threads of Type S
differ with amp ratings.
T and W have Edison base.
T & S fuses recommended
for motor circuits. W not
recommended for circuits
with motor loads.
22
SC
600V
480V
G
100
20
NON
NOS
S
250V
600V
125V
H or K5† 10
S
10
16
26
10,000–50,000 AIC
General
Purpose
(non-
current
limiting
fuses)
Plug fuses can
be used for
branch circuits
and small
component
protection.
T
125V
**
10
26
W
125V
**
10
** UL Listed as Edison Base Plug Fuse.
† Some ampere ratings are available as UL Class K5 with a 50,000A interrupting rating.
†† RK1 and RK5 fuses fit standard switches, fuseblocks and holders; however, the rejection feature of class R switches and fuseblocks designed specifically for rejection type fuses
(RK1 and RK5) prevent the insertion of the non-rejection fuses (K1, K5, and H).
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