Catalog Symbol: ECSR
Dual-Element, Time-Delay – 10 second (minimum) at 500% rated current
Current-Limiting
Volts: 600Vac (or less)
Amps: 1 to 600A
IR: 200kA RMS Sym.
Agency Information:
CE, UL Listed, Std. 248-12, Class RK5, Guide JDDZ, File E162363 CSA Certified, HRCI-R C22.2 No. 248.12, Class 1422-02(1-60A), Class 1422-01(65-600A), File 53787
Features(1-60A)
CE, UL Listed, Std. 248-12, Class RK5, Guide JDDZ, File E162363 CSA Certified, HRCI-R C22.2 No. 248.12, Class 1422-02(1-60A), Class 1422-01(65-600A), File 53787
• 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.
• 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.
Features(65-600A)
Dimensions (inches)
![](/uploads/spec-pics/201307/ecsr20-ecsr25-ecsr30-ecsr40-dimensions.jpg)
![](/uploads/spec-pics/201307/ecsr70-ecsr175-ecsr80-ecsr250-dimensions.jpg)
Features(65-600A)
• 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.
• 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 good degree of short-circuit protection (greater current-limitation) to help protect downstream components from high fault currents.
• Gives motor running back-up protection to motors without extra costs.
• Helps protect motors against burnout from overloads and single phasing when sized properly.
• Simplifies and improves blackout prevention (selective coordination ratios).
• 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.
Dimensions (inches)
![](/uploads/spec-pics/201307/ecsr20-ecsr25-ecsr30-ecsr40-dimensions.jpg)
![](/uploads/spec-pics/201307/ecsr70-ecsr175-ecsr80-ecsr250-dimensions.jpg)
Catalog Numbers (amps)
ECSR1 | ECSR9 | ECSR35 | ECSR90 | ECSR250 |
ECSR2 | ECSR10 | ECSR40 | ECSR100 | ECSR300 |
ECSR3 | ECSR12 | ECSR45 | ECSR110 | ECSR350 |
ECSR4 | ECSR15 | ECSR50 | ECSR125 | ECSR400 |
ECSR5 | ECSR17.5 | ECSR60 | ECSR150 | ECSR450 |
ECSR6 | ECSR20 | ECSR70 | ECSR175 | ECSR500 |
ECSR7 | ECSR25 | ECSR75 | ECSR200 | ECSR600 |
ECSR8 | ECSR30 | ECSR80 | ECSR225 |
Carton Quantity and Weight
Amps | Quantity | Carton Weight per Carton | |
lbs | kg | ||
1-15 | 10 | 0.4 | 0.18 |
17.5-30 | 10 | 0.5 | 0.28 |
35-60 | 10 | 3.1 | 1.41 |
65–100 | 1 | 0.54 | 0.24 |
101–200 | 1 | 1.22 | 0.54 |
201–400 | 1 | 3 | 1.36 |
401–600 | 1 | 5 | 2.27 |
Current Limitation Curves
![](/uploads/spec-pics/201307/ECSR10-ECSR20-Current-Limitation-Curves.jpg)
![](/uploads/spec-pics/201307/ecsr100-ecsr200-Current-Limitation-Curves.jpg)
Time-Current Characteristic Curves–Average Melt
![](/uploads/spec-pics/201307/ECSR15-ECSR35-Time-Current-Curves.jpg)
![](/uploads/spec-pics/201307/ECSR300-ECSR400-Time-Current-Curves.jpg)
Current-Limiting Effects
![](/uploads/spec-pics/201307/ECSR15-ECSR35-Time-Current-Curves.jpg)
![](/uploads/spec-pics/201307/ECSR300-ECSR400-Time-Current-Curves.jpg)
Current-Limiting Effects
ECSR Apparent RMS Symmetrical Let-Through Current Prosp.
SCC 5000 |
30A 1400 |
60A 2000 |
100A 2900 |
200A 3950 |
400A 5000 |
600A 5000 |
10000 | 1850 | 2650 | 3600 | 5100 | 8550 | 10000 |
15000 | 2200 | 3200 | 4100 | 5950 | 9750 | 13700 |
20000 | 2450 | 3550 | 4500 | 6600 | 10700 | 15000 |
25000 | 2700 | 3900 | 4850 | 7150 | 11500 | 16100 |
30000 | 2900 | 4280 | 5150 | 7650 | 12200 | 17050 |
35000 | 3100 | 4400 | 5400 | 8100 | 12800 | 17900 |
40000 | 3300 | 4760 | 5600 | 8500 | 13400 | 18700 |
50000 | 3550 | 5150 | 6050 | 9250 | 14400 | 20050 |
60000 | 3800 | 5500 | 6400 | 9850 | 15250 | 21250 |
80000 | 4300 | 6100 | 7000 | 10950 | 16750 | 23300 |
100000 | 4500 | 6600 | 7550 | 11900 | 18000 | 25000 |
150000 | 5200 | 8000 | 8600 | 13800 | 20550 | 28450 |
200000 | 5800 | 8500 | 9400 | 15350 | 22550 | 31200 |
Class R Fuse Blocks (600V) Catalog Data
Amps | Poles | Basic Catalog Number | Terminal Type (Suffix No.) | |||
Screw | Box Lug | |||||
— |
with Pres. Plate |
— |
with Clip Cu only |
|||
1 to 30 | 1 | R60030-1 | SR | PR | CR | - |
2 | R60030-2 | COR | ||||
3 | R60030-3 | |||||
31 to 60 | 1 | R60060-1 | — | — | CR | — |
2 | R60060-2 | |||||
3 | R60060-3 |
Amps | Poles |
Catalog Number |
Terminal Type (Suffix No.) | |
Basic Box Lug w/ | ||||
— |
Reinforced Clip CU only |
|||
70 to 100 | 1 | R60100-1 | CR | COR |
2 | R60100-2 | |||
3 | R60100-3 | |||
to 200 | 1 | R60200-1 | — | |
to 400 | 1 | R60400-1 | ||
to 600 | 1 | R60600-1 |
(Clip Retaining Spring Standard, Suffix “R”)
Fuse Reducers For Class R Fuses
*Single reducer only (pair not required).
Fuse Reducers For Class R Fuses
Equipment Fuse Clips |
Desired Fuse (Case) Size 30A |
Catalog Number (Pairs) 600V No. 663-R |
60A | 30A | No. 216-R |
100A | 60A | No. 616-R |
200A | 60A | No. 626-R |
200A | 100A | No. 2621-R |
400A |
100A 200A |
No. 2641-R No. 642-R |
600A |
100A 200A 400A |
No. 2661-R No. 2662-R No. 2664-R* |