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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

CAD55.00 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 Star
CAD55.00
Availability: 3 weeks
 
150 Amp Rating
ECNR200 Star
CAD55.00
Availability: 3 weeks
 
200 Amp Rating
ECSR125 Star
CAD96.00
Availability: 3 weeks
 
125 Amp Rating
ECSR150 Star
CAD96.00
Availability: 3 weeks
 
150 Amp Rating
ECSR200 Star
CAD96.00
Availability: 3 weeks
 
200 Amp Rating
LESRK200 Star
CAD141.00
Availability: 3 weeks
 
200 Amp Rating
ECNR70 Star
CAD25.00
Availability: 5 weeks
 
70 Amp Rating
ECNR80 Star
CAD7.94
Availability: 5 weeks
 
80 Amp Rating
ECNR90 Star
CAD26.50
Availability: 5 weeks
 
90 Amp Rating
ECNR100 Star
CAD7.63
Availability: 5 weeks
 
100 Amp Rating
ECSR70 Star
CAD16.13
Availability: 1 week
 
70 Amp Rating
ECSR80 Star
CAD15.31
Availability: 3 weeks
 
80 Amp Rating
ECSR90 Star
CAD48.00
Availability: 3 weeks
 
90 Amp Rating
ECSR100 Star
CAD15.31
Availability: 3 weeks
 
100 Amp Rating
LESRK100 Star
CAD22.50
Availability: 3 weeks
 
100 Amp Rating
ECNR1 Star
CAD8.60
Availability: 5 weeks
 
1 Amp Rating
ECNR2 Star
CAD8.30
Availability: 5 weeks
 
2 Amp Rating
ECNR3 Star
CAD7.90
Availability: 5 weeks
 
3 Amp Rating
ECNR5 Star
CAD7.60
Availability: 5 weeks
 
5 Amp Rating
ECNR8 Star
CAD7.90
Availability: 5 weeks
 
8Amp Rating
ECNR10 Star
CAD8.63
Availability: 1 week
 
10 Amp Rating
ECNR15 Star
CAD6.10
Availability: 5 weeks
 
15 Amp Rating
ECNR20 Star
CAD8.25
Availability: 1 week
 
20 Amp Rating
ECNR25 Star
CAD6.10
Availability: 5 weeks
 
25 Amp Rating
ECNR30 Star
CAD7.94
Availability: 5 weeks
 
30 Amp Rating
ECNR35 Star
CAD11.25
Availability: 5 weeks
 
35 Amp Rating
ECNR40 Star
CAD11.25
Availability: 5 weeks
 
40 Amp Rating
ECNR45 Star
CAD11.25
Availability: 5 weeks
 
45 Amp Rating
ECNR50 Star
CAD7.63
Availability: 5 weeks
 
50 Amp Rating
ECNR60 Star
CAD11.25
Availability: 5 weeks
 
60 Amp Rating
ECSR3 Star
CAD15.25
Availability: 3 weeks
 
3 Amp Rating
ECSR4 Star
CAD15.25
Availability: 3 weeks
 
4 Amp Rating
ECSR5 Star
CAD15.25
Availability: 3 weeks
 
5 Amp Rating
ECSR6 Star
CAD15.25
Availability: 3 weeks
 
6 Amp Rating
ECSR6.25 Star
CAD15.31
Availability: 3 weeks
 
6.25 Amp Rating
ECSR7 Star
CAD16.25
Availability: 3 weeks
 
7 Amp Rating
ECSR8 Star
CAD15.25
Availability: 3 weeks
 
8 Amp Rating
ECSR10 Star
CAD15.25
Availability: 3 weeks
 
10 Amp Rating
ECSR12 Star
CAD15.25
Availability: 3 weeks
 
12 Amp Rating
ECSR15 Star
CAD13.50
Availability: 3 weeks
 
15 Amp Rating
ECSR17.5 Star
CAD13.50
Availability: 3 weeks
 
17.5 Amp Rating
ECSR20 Star
CAD13.50
Availability: 3 weeks
 
20 Amp Rating
ECSR25 Star
CAD13.50
Availability: 3 weeks
 
25 Amp Rating
ECSR30 Star
CAD15.31
Availability: 3 weeks
 
30 Amp Rating
ECSR35 Star
CAD23.25
Availability: 3 weeks
 
35 Amp Rating
ECSR40 Star
CAD15.31
Availability: 3 weeks
 
40 Amp Rating
ECSR45 Star
CAD22.00
Availability: 3 weeks
 
45 Amp Rating
ECSR50 Star
CAD15.31
Availability: 3 weeks
 
50 Amp Rating
ECSR60 Star
CAD23.25
Availability: 3 weeks
 
60 Amp Rating
LENRK10 Star
CAD11.25
Availability: 3 weeks
 
10 Amp Rating
LENRK15 Star
CAD8.90
Availability: 3 weeks
 
15 Amp Rating
LENRK20 Star
CAD8.90
Availability: 3 weeks
 
20 Amp Rating
LENRK30 Star
CAD8.90
Availability: 3 weeks
 
30 Amp Rating
LENRK60 Star
CAD16.50
Availability: 3 weeks
 
60 Amp Rating
LESRK5 Star
CAD22.50
Availability: 3 weeks
 
5 Amp Rating
LESRK10 Star
CAD22.50
Availability: 3 weeks
 
10 Amp Rating
LESRK15 Star
CAD20.00
Availability: 3 weeks
 
15 Amp Rating
LESRK20 Star
CAD20.00
Availability: 3 weeks
 
20 Amp Rating
LESRK30 Star
CAD20.00
Availability: 3 weeks
 
30 Amp Rating
LESRK40 Star
CAD34.00
Availability: 3 weeks
 
40 Amp Rating
LESRK50 Star
CAD22.50
Availability: 3 weeks
 
50 Amp Rating
LESRK60 Star
CAD34.00
Availability: 3 weeks
 
60 Amp Rating
All dollar amounts on this site are shown in Canadian currency. Note: Comes with instruction sheet.
Ordering Example: (1) ECNR1 1 amp fuse, CAD8.60  plus (1) LENRK10 10 amp fuse, CAD11.25, CAD8.60 + 11.25 = CAD19.85