dual element, current-limiting, time-delay fuses with optional
open fuse indication on select ratings.
Time-delay – 10 second (minimum) at 500% of rated current.
Catalog Symbol:
FRS-R-(amp) (non-inducating)
FRS-R-(amp)ID (indicating
Ratings:
Volts — 600Vac, 300Vdc (
1
⁄
10
-30A)
— 600Vac, 250Vdc (35-60A)
Amps —
1
⁄
10
-60A
IR — 200kA Vac RMS Sym.
— 20kA Vdc
Agency Information:
CE, UL Listed, Std. 248-12, Class RK5, Guide JDDZ,
File E4273
CSA Certified, C22.2 No. 248.12, Class 1422-02, File 53787
Catalog Numbers (amps) — Non-indictaing fuses
FRS-R-
1
⁄
10
FRS-R-
1
⁄
8
FRS-R-
15
⁄
100
FRS-R-
2
⁄
10
FRS-R-
1
⁄
4
FRS-R-
3
⁄
10
FRS-R-
4
⁄
10
FRS-R-
1
⁄
2
FRS-R-
6
⁄
10
FRS-R-
8
⁄
10
FRS-R-1
FRS-R-1
1
⁄
8
FRS-R-1
1
⁄
4
FRS-R-1
4
⁄
10
FRS-R-1
1
⁄
2
FRS-R-1
6
⁄
10
FRS-R-1
8
⁄
10
FRS-R-2
FRS-R-2
1
⁄
4
FRS-R-2
1
⁄
2
FRS-R-2
8
⁄
10
FRS-R-3
FRS-R-3
2
⁄
10
FRS-R-3
1
⁄
2
FRS-R-4
FRS-R-4
1
⁄
2
FRS-R-5
FRS-R-5
6
⁄
10
FRS-R-6*
FRS-R-6
1
⁄
4
*
FRS-R-7*
FRS-R-7
1
⁄
2
*
FRS-R-8*
FRS-R-9*
FRS-R-10*
FRS-R-12*
FRS-R-15*
FRS-R-17
1
⁄
2
*
FRS-R-20*
FRS-R-25*
FRS-R-30*
FRS-R-35*
FRS-R-40*
FRS-R-45*
FRS-R-50*
FRS-R-60*
Features:
• Provides motor overload, ground fault and short-circuit
protection. When used in circuits subject to surge currents
such as those caused by motors, transformers and other
inductive components, these fuses can be sized close to
full-load amps to give maximum overcurrent protection.
• Permits the use of smaller and less costly switches. The
time-delay feature makes it possible to use fuse amp ratings
which are much smaller than those of non-time delay fuses.
Considerable cost saving occurs by permitting the use of
smaller size switches, panels and fuses themselves.
• Provides a higher degree of short-circuit protection (greater
current-limitation) in circuits in which surge currents or
temporary overloads occur.
• Helps protect motors against burnout from overloads
• Gives motor running back-up protection to motors without
extra costs
• Helps protect motors against burnout from single phasing
on three phase systems
• Simplifies and improves blackout prevention
(selective coordination)
• Dual-element fuses can be applied in circuits subject to
temporary motor overloads and surge currents to provide
both high-performance, short-circuit and overload
protection
• The overload element provides protection against low level
overcurrent of overloads and will hold an overload which is
five times greater than the amp rating of the fuse for a
minimum of ten seconds
Recommended Fuse Blocks
Fuse Amps
0-30
35-60
1-Pole
R60030-1
R60060-1
2-Pole
R60030-2
R60060-2
3-Pole
R60030-3
R60060-3
For additional information on the R600 Series of 600 volt fuse
blocks, see Data Sheet # 1111.
Fuse Reducers For Class R Fuses
Equipment
Fuse Clips
60A
100A
200A
Desired Fuse
(Case) Size
30A
30A
60A
60A
Catalog Numbers
(Pairs) 600V
NO.663-R
NO.216-R
NO.616-R
NO.626-R
* Open fuse indication available by inserting the sufix “ID.” E.g., FRS-R-15ID.
Carton Quantity and Weight
Amp Rating
1
⁄
10
–15
17
1
⁄
2
–30
35-60
Carton Qty.
10
10
10
For additional information on Class R fuse reducers, see
Data Sheet # 1118.
0713
BU-SB13728
Page 1 of 3
Data Sheet # 1017
FUSETRON™ 600V Class RK5
FRS-R — 600Vac/300Vdc,
1
⁄
10
-60A, Dual Element, Time-Delay Fuses
Time-Current Curves - Average Melt
1
⁄
10
to 8 Amps
AMP RATING
TIME IN SECONDS
CURRENT IN AMPS
0713
BU-SB13728
Page 2 of 3
Data Sheet # 1017
FUSETRON™ 600V Class RK5
FRS-R — 600Vac/300Vdc,
1
⁄
10
-60A, Dual Element, Time-Delay Fuses
Time-Current Curves - Average Melt
10 to 60 Amps
AMP RATING
400000
300000
200000
AMP RATING
Current-Limitation Curves
B
INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS
100000
90000
80000
70000
60000
50000
40000
30000
20000
60A
10000
9000
8000
7000
6000
5000
4000
3000
2000
30A
A
TIME IN SECONDS
1000
3000
6000
7000
8000
9000
10000
60000
70000
80000
90000
100000
20000
4000
30000
5000
40000
50000
200000
1000
2000
PROSPECTIVE SHORT-CIRCUIT CURRENT - SYMMETRICAL RMS AMPS
CURRENT IN AMPS
Current-Limiting Effects
Prosp.
Let-Through Current
S.C.C.
(Apparent RMS Symmetrical Vs. Fuse Rating)
30A
60A
5000
1000
1000
10,000
1000
2000
15,000
1000
2000
20,000
2000
2000
25,000
2000
2000
30,000
2000
3000
35,000
2000
3000
40,000
2000
3000
50,000
2000
3000
60,000
2000
3000
70,000
3000
4000
80,000
3000
4000
90,000
3000
4000
100,000
3000
4000
150,000
3000
5000
200,000
4000
6000
The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann 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. Cooper Bussmann reserves the right, without notice, to change
design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann 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.
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