Fusetron®FRS-R
Dual-Element, Time-Delay Fuses ⁄Ω¡º-60A
Class RK5 – 600 Volt
Form No. FRS-R 1/10-60
Page 1 of 2
Data Sheet: 1017
Bussmann®
7-25-03 A03014
⁄Ω¡ºA to 30A
.81" (± 0.008)
5" (± 0.31)
35A to 60A
1.06" (± 0.008)
5.5" (± 0.31)
Catalog Numbers
FRS-R-⁄Ω¡º FRS-R-1°Ω¡º FRS-R-8
FRS-R-⁄Ω• FRS-R-2 FRS-R-9
FRS-R-⁄fiΩ¡ºº FRS-R-2⁄Ω¢ FRS-R-10
FRS-R-¤Ω¡º FRS-R-2⁄Ω™ FRS-R-12
FRS-R-⁄Ω¢ FRS-R-2°Ω¡º FRS-R-15
FRS-R-‹Ω¡º FRS-R-3 FRS-R-17⁄Ω™
FRS-R-›Ω¡º FRS-R-3¤Ω¡º FRS-R-20
FRS-R-⁄Ω™ FRS-R-3⁄Ω™ FRS-R-25
FRS-R-flꭧ FRS-R-4 FRS-R-30
FRS-R-°Ω¡º FRS-R-4⁄Ω™ FRS-R-35
FRS-R-1 FRS-R-5 FRS-R-40
FRS-R-1⁄Ω• FRS-R-5flΩ¡º FRS-R-45
FRS-R-1⁄Ω¢ FRS-R-6 FRS-R-50
FRS-R-1›Ω¡º FRS-R-6⁄Ω¢ FRS-R-60
FRS-R-1⁄Ω™ FRS-R-7 —
FRS-R-1flΩ¡º FRS-R-7⁄Ω™ —
Fuse Reducers For Class R Fuses
Desired Catalog Number
Equipment Fuse (Case) (Pairs)
Fuse Clips Size 600V
60A 30A No. 663-R
100A 30A No. 216-R
60A No. 616-R
200A 60A No. 626-R
Dimensional Data
Carton Quantity and Weight
Ampere Carton Weight*
Ratings Qty. Lbs. Kg.
⁄Ω¡º–15 10 0.40 0.181
17.5–30 10 0.50 0.277
35-60 10 3.10 1.406
*Weight per carton.
General Information:
• Provides motor overload, ground fault and short-circuit pro-
tection. 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
amperes to give maximum overcurrent protection.
• Permits the use of smaller and less costly switches. The time-
delay feature makes it possible to use fuse ampere 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 tempo-
rary 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 tem-
porary 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.
Catalog Symbol: FRS-R
Dual-Element, Time-Delay – 10 second (minimum) at 500%
rated current
Current-Limiting
Ampere Rating: ⁄Ω¡º to 60A
Voltage Rating: 600Vac (or less)
Interrupting Rating: 200,000A RMS Sym.
dc Ratings (20,000AIC @ 250Vdc)
Agency Information:
UL Listed, Std. 248-12, Class RK5, Guide JDDZ, File E4273
CSA Certified, C22.2 No. 248.12, Class 1422-02, File 53787
CE logo denotes compliance with European Union Low Voltage Directive
(50-1000Vac, 75-1500Vdc). Refer to Data Sheet: 8002 or contact
Bussmann Application Engineering at 314-527-1270 for more information.
Recommended fuseblocks for
Class R 600V fuses
See Data Sheet: 1111
Fusetron®FRS-R
Dual-Element, Time-Delay Fuses ⁄Ω¡º-60A
Class RK5 – 600 Volt
Form No. FRS-R 1/10-60
Page 2 of 2
Data Sheet: 1017
Bussmann®
The only controlled copy of this Data Sheet is the electronic read-only version located on the 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. 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 bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
CURRENT IN AMPERES
.1
1
10
100
1,000
300
100
10
1
.1
.01
TIME IN SECONDS
.1 .2
.15
.3
.4
.6 .5
.8
11.25
1.6
22.5
3.2 4
56.25
8
10
12
AMPERE RATING
AMPERE
RATING
30
60
INSTANTANEOUS PEAK LET- THROUGH
CURRENT IN AMPERES
PROSPECTIVE SHORT-CIRCUIT CURRENT
SYMMETRICAL RMS AMPERES
400,000
100,000
10,000
1,000
1,000
10,000
100,000
200,000
B
A
15
CURRENT IN AMPERES
20
100
1,000
10,000
30,000
TIME IN SECONDS
300
100
10
1
.1
.01
60A
30A
AMPERE
RATING
15A
Current-Limitation Curves
Time-Current Characteristic Curves–Average Melt
7-25-03 A03014
