Fusetron®
Dual-Element
Time-Delay Fuses |
 |
| Class RK5 - 250 Volt 70-600 Amps |
FRN-R |
- 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
Catalog Symbol: FRN-R
Dual-Element, Time-Delay (10 seconds minimum at 500% rated current)
Ampere Rating: 70 to 600 Amperes
Voltage Rating: 250 Volts AC (or less)
Interrupting Rating: 200,000A RMS Sym.
DC Ratings: 20,000 AIC @ 125V DC
Agency Approvals: U.L. listed-Class RK-5, (Guide JDDZ, File E4273), CSA
HRCI-R(Class 1422-01; File 53787)
Catalog Numbers
| FRN-R-70 |
FRN-R-125 |
FRN-R-300 |
| FRN-R-75 |
FRN-R-150 |
FRN-R-350 |
| FRN-R-80 |
FRN-R-175 |
FRN-R-400 |
| FRN-R-85 |
FRN-R-200 |
FRN-R-450 |
| FRN-R-90 |
FRN-R-225 |
FRN-R-500 |
| FRN-R-100 |
FRN-R-250 |
FRN-R-600 |
| FRN-R-110 |
- |
- |
Carton Quantity and Weight
FRN-R FUSTRON (250 Volts AC)
Ampere
Ratings |
Carton
Qty. |
Weight*
Lbs. |
Weight*
Kg. |
| 70-100 |
5 |
1.5 |
0.680 |
| 100-200 |
1 |
0.77 |
0.349 |
| 201-400 |
1 |
1.52 |
0.689 |
| 401-600 |
1 |
2.94 |
1.334 |
*Weight per carton
Fuse Reducers for Class R Fuses
Equipment
Fuse Clips |
Desired Fuse
(Case) Size |
Catalog Number
(Pairs) 250V |
| 200A |
100A |
No. 2621-R |
| 400A |
100A |
No. 2641-R |
| 400A |
200A |
No. 242-R |
| 600A |
100A |
No. 2661-R |
| 600A |
200A |
No. 2662-R |
| 600A |
400A |
No. 2664-R** |
** Single reducer only (pair not required)
Fuseblocks for Class R Fuses
(Clip Retaining Spring Standard, Suffix "R")
| Amps |
Poles |
Basic Catalog # |
Box Lug * |
Box Lug*
w/Clip CU only |
| 70-100 |
1 |
R25100-1 |
CR |
COR |
| 70-100 |
2 |
R25100-2 |
CR |
COR |
| 70-100 |
3 |
R25100-3 |
CR |
COR |
| to 200 |
1 |
R25200-1 |
CR |
- |
| to 400 |
1 |
R25400-2 |
CR |
- |
| to 600 |
1 |
R25600-3 |
CR |
- |
* Terminal type (suffix number)
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.
FRN_R70+ (orig.-8/1/02)
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