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Dual Element Time-Delay Fuses Class Rk5 and Rk1

ECNR/ECSR/LENRK/LESRK Fuses

Dual Element Time-Delay Fuses Class Rk5 and Rk1, 600 VAC, 250 VAC | ECNR/ECSR/LENRK/LESRK Fuses

SGD88.00 ECNR150

  • True Dual - Element Spring - Trigger Construction Allows Sizing of 125% FLA for Motor Backup Protection
  • Superior Overload and Cycling Capabilities
  • Extremely Current Limiting; Provides Superior Short Circuit Component Protection
Power Products - View related products

Description

RK5 Dual Element Time-Delay Fuses
These fuses are recommended for AC power distribution system mains, feeders and branch circuits having inductive loads (motors, transformers) or non-inductive loads (lighting, heating) where the available short-circuit current does not exceed 200,000 RMS symmetrical amperes. These "dual element, time-delay" fuses have minimum industry standard time-delay of 10 seconds at 5 times the fuse rating (8 sec. minimum for 250V, 30A and less). The timedelay characteristics of these fuses typically allows them to be sized closer to the running ampacity of inductive loads to reduce cost and provide improved overcurrent protection. These fuses will override normal equipment current surges to reduce unnecessary fuse openings. They are the most popular fuses used in the industry and the most economical for most applications, especially motors and transformers. They have moderate current limitation.

CLASS R FUSES WILL FIT CLASS H, K AND R FUSE CLIPS. CLASS R FUSE CLIPS WILL ONLY ACCEPT CLASS R FUSES. FUSES RATED 600 VOLTS AC OR LESS MAY BE APPLIED AT ANY LOWER VOLTAGE.

RK1 Dual Element Time-Delay Fuses The application recommended for these fuses is exactly the same as for the Edison ECNR/ECSR fuses except for the advantages of greater current limitation. The Edison LENRK/LESRK fuses have up to 40% more current limitation and up to 350% more Amps-Squared-Second (I2t) limitation under fault conditions than Edison ECNR/ECSR fuses to reduce potential for damage. In addition, LENRK/LESRK fuses allow better selectivity for electrical power system designers and better short circuit protection for breakers having inadequate interrupting ratings. ECNR/ECSR and LENRK/LESRK fuse lines are physically interchangeable (and electrically interchangeable per U.L. equipment listing conditions) and are recommended as a practical, economical way to upgrade systems for many situations.

SPECIFICATIONS
Voltage Rating:
    ECNR and LENRK: 250 Vac
    ECSR and LESRK: 600 Vac
Ampere Rating:
    ECNR and ECSR: 0.1 to 600 A
    LENRK and LESRK: 0.2 to 600 A
Interrupting Rating: 200,000 RMS symmetrical amps
LENRK and LESRK Self-Certified Interrupting Rating: 300,000 RMS symmetrical amps
Current Limiting:
ECNR and ECSR: RK5 fuse
LENRK and LESRK: RK1 fuse
Agency Approvals: UL Listed, Class RK5 and RK1, Guide JDDZ, File E162363; CSA Certified HRCI-R per C22.2, No. 248.12
Self-Certified DC Ratings:
    Voltage Rating: ECNR (0.1 to 600) 125 Vdc; ECSR (0.1 to 600) 300 Vdc; LENRK (0.2 to 600) 125 Vdc; LESRK (0.25 to 30) 200 Vdc; (35 to 600) 300 Vdc
Interrupting Rating:
    ECNR and ECSR: 20,000 amperes DC
    LENRK and LESRK: 20,000 amperes DC
Place Order(Specify Model Number)
Part Number/Desc.
Qty
Description
ECNR150
SGD88.00
Availability: 3 weeks
 
150 Amp Rating
ECNR200
SGD88.00
Availability: 3 weeks
 
200 Amp Rating
ECSR125
SGD150.00
Availability: 3 weeks
 
125 Amp Rating
ECSR150
SGD150.00
Availability: 3 weeks
 
150 Amp Rating
ECSR200
SGD150.00
Availability: 3 weeks
 
200 Amp Rating
LESRK200
SGD222.00
Availability: 3 weeks
 
200 Amp Rating
ECNR70
SGD38.50
Availability: 5 weeks
 
70 Amp Rating
ECNR80
SGD38.50
Availability: 5 weeks
 
80 Amp Rating
ECNR90
SGD38.50
Availability: 5 weeks
 
90 Amp Rating
ECNR100
SGD38.50
Availability: 5 weeks
 
100 Amp Rating
ECSR70
SGD74.00
Availability: 5 weeks
 
70 Amp Rating
ECSR80
SGD74.00
Availability: 5 weeks
 
80 Amp Rating
ECSR90
SGD74.00
Availability: 5 weeks
 
90 Amp Rating
ECSR100
SGD74.00
Availability: 5 weeks
 
100 Amp Rating
LESRK100
SGD109.00
Availability: 5 weeks
 
100 Amp Rating
ECNR1
SGD13.25
Availability: 1 week
 
1 Amp Rating
ECNR2
SGD12.75
Availability: 5 weeks
 
2 Amp Rating
ECNR3
SGD14.00
Availability: 5 weeks
 
3 Amp Rating
ECNR5
SGD14.00
Availability: 5 weeks
 
5 Amp Rating
ECNR8
SGD14.00
Availability: 5 weeks
 
8Amp Rating
ECNR10
SGD11.75
Availability: 5 weeks
 
10 Amp Rating
ECNR15
SGD9.30
Availability: 1 week
 
15 Amp Rating
ECNR20
SGD9.30
Availability: 5 weeks
 
20 Amp Rating
ECNR25
SGD9.30
Availability: 5 weeks
 
25 Amp Rating
ECNR30
SGD9.30
Availability: 5 weeks
 
30 Amp Rating
ECNR35
SGD17.25
Availability: 5 weeks
 
35 Amp Rating
ECNR40
SGD17.25
Availability: 5 weeks
 
40 Amp Rating
ECNR45
SGD17.25
Availability: 5 weeks
 
45 Amp Rating
ECNR50
SGD17.25
Availability: 5 weeks
 
50 Amp Rating
ECNR60
SGD17.25
Availability: 5 weeks
 
60 Amp Rating
ECSR3
SGD23.50
Availability: 5 weeks
 
3 Amp Rating
ECSR4
SGD23.50
Availability: 5 weeks
 
4 Amp Rating
ECSR5
SGD23.50
Availability: 5 weeks
 
5 Amp Rating
ECSR6
SGD23.50
Availability: 5 weeks
 
6 Amp Rating
ECSR6.25
SGD25.50
Availability: 5 weeks
 
6.25 Amp Rating
ECSR7
SGD25.50
Availability: 5 weeks
 
7 Amp Rating
ECSR8
SGD23.50
Availability: 5 weeks
 
8 Amp Rating
ECSR10
SGD23.50
Availability: 5 weeks
 
10 Amp Rating
ECSR12
SGD23.50
Availability: 5 weeks
 
12 Amp Rating
ECSR15
SGD21.00
Availability: 5 weeks
 
15 Amp Rating
ECSR17.5
SGD21.00
Availability: 5 weeks
 
17.5 Amp Rating
ECSR20
SGD21.00
Availability: 5 weeks
 
20 Amp Rating
ECSR25
SGD21.00
Availability: 5 weeks
 
25 Amp Rating
ECSR30
SGD21.00
Availability: 1 week
 
30 Amp Rating
ECSR35
SGD36.00
Availability: 5 weeks
 
35 Amp Rating
ECSR40
SGD36.00
Availability: 5 weeks
 
40 Amp Rating
ECSR45
SGD36.00
Availability: 5 weeks
 
45 Amp Rating
ECSR50
SGD36.00
Availability: 5 weeks
 
50 Amp Rating
ECSR60
SGD36.00
Availability: 5 weeks
 
60 Amp Rating
LENRK10
SGD17.25
Availability: 5 weeks
 
10 Amp Rating
LENRK15
SGD14.00
Availability: 5 weeks
 
15 Amp Rating
LENRK20
SGD14.00
Availability: 5 weeks
 
20 Amp Rating
LENRK30
SGD14.00
Availability: 5 weeks
 
30 Amp Rating
LENRK60
SGD25.50
Availability: 5 weeks
 
60 Amp Rating
LESRK5
SGD34.50
Availability: 5 weeks
 
5 Amp Rating
LESRK10
SGD34.50
Availability: 5 weeks
 
10 Amp Rating
LESRK15
SGD30.50
Availability: 5 weeks
 
15 Amp Rating
LESRK20
SGD30.50
Availability: 5 weeks
 
20 Amp Rating
LESRK30
SGD30.50
Availability: 5 weeks
 
30 Amp Rating
LESRK40
SGD53.00
Availability: 5 weeks
 
40 Amp Rating
LESRK50
SGD53.00
Availability: 5 weeks
 
50 Amp Rating
LESRK60
SGD53.00
Availability: 5 weeks
 
60 Amp Rating
All prices on this site are shown in Singapore Dollars.
Note: Comes with instruction sheet.
Ordering Example: (1) ECNR1 1 amp fuse, SGD13.25  plus (1) LENRK10 10 amp fuse, SGD17.25, SGD13.25 + 17.25 = SGD30.50
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