Bussmann FRS-R Data Sheet

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

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 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 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

5" (± 0.31)

.81" (± 0.008)

⁄Ω¡ºA to 30A

5.5" (± 0.31)

1.06" (± 0.008)

35A to 60A

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-Limitation Curves

Time-Current Characteristic Curves–Average Melt

7-25-03

A03014

.5

.811.25

2.5

.1.2.15.3.4

300

100

10

1

TIME IN SECONDS

.1

.6

1.6

2

456.25

3.2

AMPERE RATING

8

10

12

300

100

10

AMPERE

60A

30A

15A

1

RATING

.01

.1

1

CURRENT IN AMPERES

400,000

100,000

10,000

CURRENT IN AMPERES

INSTANTANEOUS PEAK LET- THROUGH

A

1,000

10

100

1,000

B

AMPERE

60
30

15

TIME IN SECONDS

.1

RATING

.01

20

100

CURRENT IN AMPERES

1,000

10,000

30,000

1,000

PROSPECTIVE SHORT-CIRCUIT CURRENT

SYMMETRICAL RMS AMPERES

10,000

100,000

200,000