ECSR
Class RK5 600Vac, 70 to 600A
Dual-Element, Time-Delay Fuses
Dimensions (inches)
• Simplifies and improves blackout prevention (selective
coordination ratios).
Catalog Symbol: ECSR
Dual-Element, Time-Delay – 10 seconds (minimum) at 500%
rated current
• 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.
Current-Limiting
Volts: 600Vac (or less)
Amps: 65 to 600A
IR: 200kA RMS Sym.
Catalog Numbers (amps)
ECSR70
ECSR75
ECSR80
ECSR90
ECSR100
ECSR110
ECSR125
ECSR150
ECSR175
ECSR200
ECSR225
ECSR250
ECSR300
ECSR350
ECSR400
ECSR450
ECSR500
ECSR600
Agency Information: CE, UL. Listed, Std. 248-12, Class
RK5, Guide JDDZ, File E162363 CSA Certified, HRCI-R
C22.2 No. 248.12, Class 1422-01, File 53787
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.
Carton Quantity and Weight
Carton
Quantity
Weight per Carton
lbs
Amps
kg
65–100
101–200
201–400
401–600
1
1
1
1
0.54
1.22
3.00
5.00
0.24
0.54
1.36
2.27
• 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.
Class R Fuse Blocks (600V) Catalog Data
(Clip Retaining Spring Standard, Suffix “R”)
Terminal Type (Suffix No.)
Basic Box Lug w/
Catalog
Number
• Provides a good degree of short-circuit protection
(greater current-limitation) to help protect downstream
components from high fault currents.
—
Reinforced Clip
Amps
70
Poles
CU only
COR
COR
COR
—
1
2
3
1
1
1
R60100-1
R60100-2
R60100-3
R60200-1
R60400-1
R60600-1
CR
CR
CR
CR
CR
CR
• Gives motor running back-up protection to motors
without extra costs.
to
100
• Helps protect motors against burnout from overloads
and single phasing when sized properly.
to 200
to 400
to 600
—
—
Form No. ESCR 70-600
Page 1 of 2
07-10-07
BU-SB07255
Data Sheet #1318