FUSETRON™ 250V Class RK5
FRN-R — 250Vac/125Vdc,
1
⁄
10
-60A, Dual Element, Time-Delay Fuses
Dimensions - in
2"
(± 0.31)
0.56" (±0.008)
1/10 to 30A
3"
(± 0.31)
0.81" (±0.008)
35 to 60A
Description:
Advanced protection, energy efficient Class RK5
dual element, current-limiting, time-delay fuses with optional
open fuse indication on select ratings.
Time-delay – 10 seconds (minimum) at 500% of rated current
(8 seconds for
1
⁄
10
-30A sizes).
Catalog Symbol:
FRN-R-(amp) (non-indicating)
FRN-R-(amp)ID (indicating)
Ratings:
Volts — 250Vac, 125Vdc
Amps —
1
⁄
10
-60 Amps
IR — 200kA Vac RMS Sym.
— 20kA Vdc
Agency Information:
CE, UL Listed, Std. 248-12, Class RK-5, Guide JDDZ,
File E4273
CSA Certified, C22.2 No. 248.12, Class 1422-02, File 53787
Catalog Numbers (amps) — Non-indictaing fuses
FRN-R-
1
⁄
10
FRN-R-
1
⁄
8
FRN-R-
15
⁄
100
FRN-R-
2
⁄
10
FRN-R-
1
⁄
4
FRN-R-
3
⁄
10
FRN-R-
4
⁄
10
FRN-R-
1
⁄
2
FRN-R-
6
⁄
10
FRN-R-
8
⁄
10
FRN-R-1
FRN-R-1
1
⁄
8
FRN-R-1
1
⁄
4
FRN-R-1
4
⁄
10
FRN-R-1
1
⁄
2
FRN-R-1
6
⁄
10
FRN-R-1
8
⁄
10
FRN-R-2
FRN-R-2
1
⁄
4
FRN-R-2
1
⁄
2
FRN-R-2
8
⁄
10
FRN-R-3
FRN-R-3
2
⁄
10
FRN-R-3
1
⁄
2
FRN-R-4
FRN-R-4
1
⁄
2
FRN-R-5
FRN-R-5
6
⁄
10
FRN-R-6
FRN-R-6
1
⁄
4
FRN-R-7
FRN-R-7
1
⁄
2
FRN-R-8*
FRN-R-9*
FRN-R-10*
FRN-R-12*
FRN-R-15*
FRN-R-17
1
⁄
2
*
FRN-R-20*
FRN-R-25*
FRN-R-30*
FRN-R-35*
FRN-R-40*
FRN-R-45*
FRN-R-50*
FRN-R-60*
Features:
• Provides motor overload, ground fault and short-circuit
protection
• Helps protect motors against burnout from overloads
• 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 ampere rating of the fuse for a
minimum of ten seconds.
Recommended Fuse Blocks
Fuse Amps
0-30
35-60
1-Pole
H25030-1
R25030-1
H25060-1
R25060-1
2-Pole
H25030-2
R25030-2
H25060-2
R25060-2
3-Pole
H25030-3
R25030-3
H25060-3
R25060-3
For additional information on the 250 volt fuse blocks, see
Data Sheets # 1110 (R250), # 1112 (H250).
Fuse Reducers For Class R Fuses
Equipment
Fuse Clips
Desired Fuse
(Case) Size
Catalog Numbers
(Pairs) 250V
60A
100A
200A
30A
30A
60A
60A
NO.263-R
NO.213-R
NO.216-R
NO.226-R
For additional information on Class R fuse reducers, see
Data Sheet # 1118.
* Open fuse indication available by inserting the sufix “ID.” E.g., FRN-R-15ID.
Carton Quantity and Weight
Amp Rating
1
⁄
10
–15
17
1
⁄
2
–30
35–60
Carton Qty.
10
10
10
0713
BU-SB13730
Page 1 of 3
Data Sheet # 1019
FUSETRON™ 250V Class RK5
FRN-R — 250Vac/125Vdc,
1
⁄
10
-60A, Dual Element, Time-Delay Fuses
Time-Current Curves - Average Melt
8 to 60 Amps
AMP RATING
Current-Limitation Curves
810 15
30
60
400000
300000
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
30A
TIME IN SECONDS
2000
A
1000
50000
60000
70000
80000
90000
100000
2000
5000
6000
7000
8000
9000
10000
20000
4000
30000
200000
40000
1000
3000
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
2000
10,000
2000
3000
15,000
2000
3000
20,000
2000
4000
25,000
2000
4000
30,000
2000
4000
35,000
2000
4000
40,000
2000
5000
50,000
3000
5000
60,000
3000
5000
70,000
3000
6000
80,000
3000
6000
90,000
3000
6000
100,000
3000
6000
150,000
4000
7000
200,000
4000
8000
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.
0713
BU-SB13730
Page 3 of 3
Data Sheet # 1019
AMP RATING
200000
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