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 second (minimum) at 500% of rated current.
Catalog Symbol:
FRS-R-(amp) (non-inducating)
FRS-R-(amp)ID (indicating)
Ratings:
Volts: 600Vac,300Vdc (1⁄10-30A & 65-600A),250Vdc (35-60A)
Amps: 1/10-600A
IR: 200kA Vac RMS Sym. 20kA Vdc
Agency Information:
CE, UL Listed, Std. 248-12, Class RK5, Guide JDDZ, File E4273
CSA Certified, C22.2 No. 248.12, Class 1422-02, File 53787
Catalog Numbers (amps)
| FRS-R-1⁄10 | FRS-R-2 | FRS-R-10 | FRS-R-100 |
| FRS-R-1⁄8 | FRS-R-2-1⁄4 | FRS-R-12 | FRS-R-110 |
| FRS-R-15⁄100 | FRS-R-2-1⁄2 | FRS-R-15 | FRS-R-125 |
| FRS-R-2⁄10 | FRS-R-2-8⁄10 | FRS-R-17-1⁄2 | FRS-R-150 |
| FRS-R-1⁄4 | FRS-R-3 | FRS-R-20 | FRS-R-175 |
| FRS-R-3⁄10 | FRS-R-3-2⁄10 | FRS-R-25 | FRS-R-200 |
| FRS-R-4⁄10 | FRS-R-3-1⁄2 | FRS-R-30 | FRS-R-225 |
| FRS-R-1⁄2 | FRS-R-4 | FRS-R-35 | FRS-R-250 |
| FRS-R-6⁄10 | FRS-R-4-1⁄2 | FRS-R-40 | FRS-R-300 |
| FRS-R-8⁄10 | FRS-R-5 | FRS-R-45 | FRS-R-350 |
| FRS-R-1 | FRS-R-5-6⁄10 | FRS-R-50 | FRS-R-400 |
| FRS-R-1-1⁄8 | FRS-R-6 | FRS-R-60 | FRS-R-450 |
| FRS-R-1-1⁄4 | FRS-R-6-1⁄4 | FRS-R-65 | FRS-R-500 |
| FRS-R-1-4⁄10 | FRS-R-7 | FRS-R-70 | FRS-R-600 |
| FRS-R-1-1⁄2 | FRS-R-7-1⁄2 | FRS-R-75 | |
| FRS-R-1-6⁄10 | FRS-R-8 | FRS-R-80 | |
| FRS-R-1 8⁄10 | FRS-R-9 | FRS-R-90 |
Catalog Numbers (amps) (Open fuse indication available)
| FRS-R-6ID | FRS-R-9ID | FRS-R-20ID | FRS-R-45ID |
| FRS-R-6-1⁄4ID | FRS-R-10ID | FRS-R-25ID | FRS-R-50ID |
| FRS-R-7ID | FRS-R-12ID | FRS-R-30ID | FRS-R-60ID |
| FRS-R-7-1⁄2ID | FRS-R-15ID | FRS-R-35ID | |
| FRS-R-8ID | FRS-R-17-1⁄2ID | FRS-R-40ID |
Carton Quantity
| Amp Rating | Carton Qty. |
| 1/10-60 | 10 |
| 65-100 | 1 |
Dimensions - in
Features:
• Provides motor overload, ground fault and short-circuit protection. 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 amps to give maximum overcurrent protection.
• Permits the use of smaller and less costly switches. The time-delay feature makes it possible to use fuse amp 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 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 amp rating of the fuse for a minimum of ten seconds
Recommended Fuse Blocks
• Provides motor overload, ground fault and short-circuit protection. 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 amps to give maximum overcurrent protection.
• Permits the use of smaller and less costly switches. The time-delay feature makes it possible to use fuse amp 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 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 amp rating of the fuse for a minimum of ten seconds
Recommended Fuse Blocks
| Fuse Amps | 1-Pole | 2-Pole | 3-Pole |
| 0-30 | R60030-1 | R60030-2 | R60030-3 |
| 35-60 | R60060-1 | R60060-2 | R60060-3 |
| 70-100 | RM60100-1CR | RM60100-2CR | RM60100-3CR |
| 110-200 | RM60200-1CR | RM60200-2CR | RM60200-3CR |
| 225-400 | RM60400-1CR | RM60400-2CR | RM60400-3CR |
| 450-600 | RM60600-1CR | RM60600-2CR | RM60100-3CR |
Fuse Reducers For Class R Fuses
| Equipment Fuse Clips | Desired Fuse (Case) Size | Catalog Numbers (Pairs) 600V |
| 60A | 30A | NO.663-R |
| 100A | 30A | NO.216-R |
| 60A | NO.616-R | |
| 200A | 60A | NO.626-R |
| 200A | 100A | NO.2621-R |
| 400A | 100A | NO.2641-R |
| 200A | NO.642-R | |
| 600A | 100A | NO.2661-R |
| 200A | NO.2662-R | |
| 400A | NO.2664-R† |
† Single reducer only (pair not required)
Time-Current Curves - Average Melt
Current-Limitation Curves
Current-Limiting Effects
| Prosp. S.C.C. | Let-Through Current (Apparent RMS Symmetrical Vs. Fuse Rating) | |||||
| 30A | 60A | 100A | 200A | 400A | 600A | |
| 5000 | 1000 | 1000 | 3000 | 4000 | 5000 | 5000 |
| 10,000 | 1000 | 2000 | 4000 | 5000 | 9000 | 10,000 |
| 15,000 | 1000 | 2000 | 4000 | 6000 | 10,000 | 14,000 |
| 20,000 | 2000 | 2000 | 5000 | 7000 | 11,000 | 15,000 |
| 25,000 | 2000 | 2000 | 5000 | 7000 | 12,000 | 17,000 |
| 30,000 | 2000 | 3000 | 5000 | 8000 | 13,000 | 18,000 |
| 35,000 | 2000 | 3000 | 5000 | 8000 | 13,000 | 18,000 |
| 40,000 | 2000 | 3000 | 6000 | 9000 | 14,000 | 19,000 |
| 50,000 | 2000 | 3000 | 6000 | 9000 | 14,000 | 20,000 |
| 60,000 | 2000 | 3000 | 6000 | 10,000 | 15,000 | 22,000 |
| 70,000 | 3000 | 4000 | 7000 | 11,000 | 17,000 | 23,000 |
| 80,000 | 3000 | 4000 | 7000 | 12,000 | 17,000 | 23,000 |
| 90,000 | 3000 | 4000 | 7000 | 12,000 | 17,000 | 24,000 |
| 100,000 | 3000 | 4000 | 8000 | 13,000 | 18,000 | 25,000 |
| 150,000 | 3000 | 5000 | 9000 | 14,000 | 21,000 | 27,000 |
| 200,000 | 4000 | 6000 | 9000 | 16,000 | 23,000 | 32,000 |