cooper bussmann

ECSR Dual-Element Time-Delay Class RK5 Fuses-Replacement for DLS-R

  
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)
• 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.

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)



 
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
1A-15A 10 0.4 0.18
17.5A-30A 10 0.5 0.28
35A-60A 10 3.1 1.41
65A–100A 1 0.54 0.24
101A–200A 1 1.22 0.54
201A–400A 1 3 1.36
401A–600A 1 5 2.27


Current Limitation Curves



Time-Current Characteristic Curves–Average Melt



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
1A to 30A 1 R60030-1 SR PR CR -
2 R60030-2 COR
3 R60030-3
35A to 60A 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
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*
*Single reducer only (pair not required).

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