General Information:
• 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.
1/10 A to 30A
0.56" (± 0.008)
2"
(± 0.31)
35A to 60A
3"
(± 0.31)
0.81" (± 0.008)
Catalog Symbol: FRN-R
Current-Limiting
Dual-Element, Time-Delay – 10 seconds (minimum) at 500%
rated current (8 seconds for 0-30A sizes)
Ampere Rating: 1⁄10 to 60 Amperes
Voltage Rating: 250Vac (or less)
Interrupting Rating: 200,000A RMS Sym.
DC Ratings: 20,000 AIC @ 125Vdc
Agency Information:
UL Listed, Std. 248-12, Class RK-5, Guide JDDZ, File E4273
CSA Certified, C22.2 No. 248.12, Class 1422-01, File 53787
Catalog Numbers
FRN-R-1⁄10 FRN-R-18⁄10 FRN-R-8
FRN-R-1⁄8FRN-R-2 FRN-R-9
FRN-R-15⁄100 FRN-R-21⁄4FRN-R-10
FRN-R-2⁄10 FRN-R-21⁄2FRN-R-12
FRN-R-1⁄4FRN-R-28⁄10 FRN-R-15
FRN-R-3⁄10 FRN-R-3 FRN-R-171⁄2
FRN-R-4⁄10 FRN-R-3 2⁄10 FRN-R-20
FRN-R-1⁄2FRN-R-31⁄2FRN-R-25
FRN-R-6⁄10 FRN-R-4 FRN-R-30
FRN-R-8⁄10 FRN-R-41⁄2FRN-R-35
FRN-R-1 FRN-R-5 FRN-R-40
FRN-R-11⁄8FRN-R-5 6⁄10 FRN-R-45
FRN-R-11⁄4FRN-R-6 FRN-R-50
FRN-R-14⁄10 FRN-R-61⁄4FRN-R-60
FRN-R-11⁄2FRN-R-7 —
FRN-R-16⁄10 FRN-R-71⁄2—Fuseblocks for Class R Fuses
(Clip Retaining Spring Standard, Suffix “R”)
See Data Sheet 1110
Terminal Type (Suffix No.)
Basic Screw w/ Box Lug w/ 1
⁄2˝
Catalog — Pres. — Clip Quick-
Amps Poles Number Plate CU only Connect
1⁄10 1 R25030-1 SR PR CR COR QR
to 2 R25030-2 SR PR CR COR —
30 3 R25030-3 SR PR CR COR —
31 1 R25060-1 SR — CR — —
to 2 R25060-2 SR — CR — —
60 3 R25060-3 SR — CR — —
Fuse Reducers For Class R Fuses
Equipment Desired Fuse Catalog Number
Fuse Clips (Case) Size (Pairs) 250V
60A 30A No. 263-R
100A 30A No. 213-R
60A No. 216-R
200A 60A No. 226-R
Carton Quantity and Weight
Ampere Carton Weight*
Ratings Qty. Lbs. Kg.
0–15 10 0.40 0.181
17.5–30 10 0.50 0.227
35–60 10 1.00 0.453
*Weight per carton.
Dimensional Data
Fusetron®
Dual-Element, Time-Delay Fuses
Class RK5 - 250 Volt
FRN-R
1⁄10-60A
10-08 BU-SB08353 Page 1 of 2 Data Sheet 1019
810 15 30 60
Time-Current Characteristic Curves–Average Melt
Time-Current Characteristic Curves–
Average Melt
Current-Limitation Curve
Peal Current In Amps
© 2009 Cooper Bussmann
St. Louis, MO 63178
www.cooperbussmann.com
10-08 BU-SB08353 Page 2 of 2 Data Sheet 1019
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 informa-
tion 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.
RMS Symmetrical Currents In Amps
A–B–Asymmetrical Available Peak (2.3 x Sym RMS Amps)
