Technical Data 1002
Effective August 2018
Supersedes March 2017
LPS-RK — 600 Vac/300 Vdc, 70-600 A,
dual element, time-delay fuses
Catalog no.*
LPS-RK-70SP
LPS-RK-80SP
LPS-RK-90SP
LPS-RK-100SP
LPS-RK-110SP
LPS-RK-125SP
LPS-RK-150SP
LPS-RK-175SP
LPS-RK-200SP
LPS-RK-225SP
LPS-RK-250SP
LPS-RK-300SP
LPS-RK-350SP
LPS-RK-400SP
LPS-RK-450SP
LPS-RK-500SP
LPS-RK-600SP
* Open fuse indication available on all part numbers by
inserting the suffix “I, e.g., LPS-RK-90SPI. Requires 75Vac
”
minimum voltage. Indicating fuses are not Vdc rated.
Carton quantity
•
1
Feeder and branch circuits
Motors
Transformers
Solenoids
General purpose circuits
Industry’s only UL Listed and CSA Certified fuse
with a 300kA interrupting rating that allows for
simple, worry-free installation in virtually any
application.
Fast short-circuit protection and dual-element,
time-delay performance provide ultimate protec-
tion.
Reduces existing fuse inventory by up to 33%
when upgrading to Low-Peak fuses.
Consistent 2:1 ampacity ratios for all Low-Peak
fuses make selective coordination easy.
Time-delay permits 130% FLA sizing for back-up
motor protection.
Current-limitation protects downstream compo-
nents against damaging thermal and magnetic
effects of short-circuit currents.
Protects against single-phase motor damage.
Proper sizing can provide “no damage” Type 2
coordinated protection for NEMA and IEC motor
controllers.
Typical applications
•
•
Catalog symbols:
•
•
•
•
•
LPS-RK-(amp)SP (non-indicating)
LPS-RK-(amp)SPI (indicating)
Description: Ultimate protection Class RK1 current-
limiting, dual element, time-delay fuses available
with optional open fuse indication.
Features and benefits
•
Specifications:
Ratings
•
•
Volts
•
600 Vac
•
•
300 Vdc*
•
•
•
Amps 70-600 A
IR
•
•
300 kA Vac RMS Sym.
100 kA Vdc
•
•
* Indicating versions not Vdc rated.
Agency information
•
•
•
•
UL Listed, Guide JDDZ, File E4273
CSA Certified, Class 1422-02, File 53787 Class
,
RK1 per CSA C22.2 No. 248.12
CE
•
Technical Data 1002
Effective August 2018
LPS-RK — 600 Vac/300 Vdc, 70-600 A, dual element, time-delay fuses
Recommended fuse blocks
Catalog no.
A
mps
Current-limitation curves
2-Pole
RM60100-2CR
RM60200-2CR
RM60400-2CR
RM60600-2CR
3-Pole
RM60100-3CR
RM60200-3CR
RM60400-3CR
RM60100-3CR
AMP RATING
600A
400A
200A
100A
100,000
200,000
10,000
RMS SYMMETRICAL CURRENT IN AMPS
A-B = ASYMMETRICAL AVAILABLE PEAK (2.3 X SYM RMS AMPS)
400,000
B
INSTANTANEOUS PEAK-LET-THROUGH CURRENT IN AMPS
100
200
400
600
1-Pole
RM60100-1CR
RM60200-1CR
RM60400-1CR
RM60600-1CR
100,000
For additional information on the RM600 600 volt fuse blocks, see
product brochure no. 3192.
Fuse reducers for Class R fuses
Desired fuse (case)
Equipment fuse clips size
200 A
100 A
100 A
400 A
200 A
100 A
600 A
200 A
400 A
† Single reducer only (pair not required).
Catalog no. (pairs)
600V
NO.2621-R
NO.2641-R
NO.642-R
NO.2661-R
NO.2662-R
NO.2664-R†
10,000
A
Dimensions — in
A
B
Fuse amps
70-100
110-200
225-400
450-600
A
7
.88
9.63
11.63
13.38
B
1.11
1.61
2.36
2.88
Current-limiting effects
Prosp. S.C.C.
—
1000
2000
3000
5000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
150,000
200,000
250,000
300,000
Let-through current (apparent RMS Sym. vs. fuse rating)
100A
1000
2000
2000
2000
3000
3000
3000
4000
4000
4000
4000
5000
5000
5000
5000
5000
6000
6000
7000
7000
7000
200A
1000
2000
3000
3000
4000
5000
5000
6000
6000
6000
6000
7000
7000
8000
8000
8000
9000
10,000
11,000
12,000
12,000
400A
1000
2000
3000
5000
7000
8000
9000
9000
10,000
10,000
10,000
11,000
12,000
13,000
13,000
13,000
14,000
15,000
16,000
17
,000
18,000
600A
1000
2000
3000
5000
10,000
11,000
12,000
12,000
13,000
13,000
14,000
15,000
15,000
16,000
16,000
17
,000
17
,000
19,000
21,000
22,000
23,000
2
Eaton.com/bussmannseries
300,000
1000
For additional information on Class R fuse reducers, see data sheet
no. 1118.
1000
LPS-RK — 600 Vac/300 Vdc, 70-600 A, dual element, time-delay fuses
Technical Data 1002
Effective August 2018
Time-current curves - average melt
Eaton.com/bussmannseries
3
Technical Data 1002
Effective August 2018
LPS-RK — 600 Vac/300 Vdc, 70-600 A, dual element, time-delay fuses
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
Eaton.com
Bussmann Division
114 Old State Road
Ellisville, MO 63021
United States
Eaton.com/bussmannseries
© 2018 Eaton
All Rights Reserved
Printed in USA
Publication No. 1002 — BU-SB13685
August 2018
Eaton, Bussmann and Low-Peak are valuable
trademarks of Eaton in the U.S. 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.
UL is a registered trademark of the
Underwriters Laboratories, Inc.
Follow us on social media to get the
latest product and support information.
Eaton.com/bussmannseries
京公网安备 11010802033920号
EEWORLD
