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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

USD61.00 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
Quick Ship
ECNR150
USD61.00
Availability: 3 weeks
 
150 Amp Rating
Quick Ship
ECNR200
USD61.00
Availability: 3 weeks
 
200 Amp Rating
Quick Ship
ECSR125
USD104.00
Availability: 3 weeks
 
125 Amp Rating
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ECSR150
USD104.00
Availability: 3 weeks
 
150 Amp Rating
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ECSR200
USD104.00
Availability: 3 weeks
 
200 Amp Rating
Quick Ship
LESRK200
USD154.00
Availability: 3 weeks
 
200 Amp Rating
Quick Ship
ECNR70
USD27.00
Availability: 5 weeks
 
70 Amp Rating
Quick Ship
ECNR80
USD27.00
Availability: 5 weeks
 
80 Amp Rating
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ECNR90
USD27.00
Availability: 5 weeks
 
90 Amp Rating
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ECNR100
USD27.00
Availability: 5 weeks
 
100 Amp Rating
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ECSR70
USD51.00
Availability: 5 weeks
 
70 Amp Rating
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ECSR80
USD51.00
Availability: 5 weeks
 
80 Amp Rating
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ECSR90
USD51.00
Availability: 5 weeks
 
90 Amp Rating
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ECSR100
USD51.00
Availability: 5 weeks
 
100 Amp Rating
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LESRK100
USD76.00
Availability: 5 weeks
 
100 Amp Rating
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ECNR1
USD9.20
Availability: 5 weeks
 
1 Amp Rating
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ECNR2
USD8.80
Availability: 5 weeks
 
2 Amp Rating
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ECNR3
USD9.60
Availability: 5 weeks
 
3 Amp Rating
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ECNR5
USD9.60
Availability: 5 weeks
 
5 Amp Rating
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ECNR8
USD9.60
Availability: 5 weeks
 
8Amp Rating
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ECNR10
USD8.20
Availability: 1 week
 
10 Amp Rating
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ECNR15
USD6.40
Availability: 1 week
 
15 Amp Rating
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ECNR20
USD6.40
Availability: 1 week
 
20 Amp Rating
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ECNR25
USD6.40
Availability: 5 weeks
 
25 Amp Rating
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ECNR30
USD6.40
Availability: 5 weeks
 
30 Amp Rating
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ECNR35
USD12.00
Availability: 5 weeks
 
35 Amp Rating
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ECNR40
USD12.00
Availability: 5 weeks
 
40 Amp Rating
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ECNR45
USD12.00
Availability: 5 weeks
 
45 Amp Rating
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ECNR50
USD12.00
Availability: 5 weeks
 
50 Amp Rating
Quick Ship
ECNR60
USD12.00
Availability: 5 weeks
 
60 Amp Rating
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ECSR3
USD16.25
Availability: 5 weeks
 
3 Amp Rating
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ECSR4
USD16.25
Availability: 5 weeks
 
4 Amp Rating
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ECSR5
USD16.25
Availability: 5 weeks
 
5 Amp Rating
Quick Ship
ECSR6
USD16.25
Availability: 5 weeks
 
6 Amp Rating
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ECSR6.25
USD17.50
Availability: 5 weeks
 
6.25 Amp Rating
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ECSR7
USD17.50
Availability: 5 weeks
 
7 Amp Rating
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ECSR8
USD16.25
Availability: 5 weeks
 
8 Amp Rating
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ECSR10
USD16.25
Availability: 5 weeks
 
10 Amp Rating
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ECSR12
USD16.25
Availability: 5 weeks
 
12 Amp Rating
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ECSR15
USD14.50
Availability: 5 weeks
 
15 Amp Rating
Quick Ship
ECSR17.5
USD14.50
Availability: 5 weeks
 
17.5 Amp Rating
Quick Ship
ECSR20
USD14.50
Availability: 5 weeks
 
20 Amp Rating
Quick Ship
ECSR25
USD14.50
Availability: 5 weeks
 
25 Amp Rating
Quick Ship
ECSR30
USD14.50
Availability: 1 week
 
30 Amp Rating
Quick Ship
ECSR35
USD25.00
Availability: 5 weeks
 
35 Amp Rating
Quick Ship
ECSR40
USD25.00
Availability: 5 weeks
 
40 Amp Rating
Quick Ship
ECSR45
USD25.00
Availability: 5 weeks
 
45 Amp Rating
Quick Ship
ECSR50
USD25.00
Availability: 5 weeks
 
50 Amp Rating
Quick Ship
ECSR60
USD25.00
Availability: 5 weeks
 
60 Amp Rating
Quick Ship
LENRK10
USD12.00
Availability: 5 weeks
 
10 Amp Rating
Quick Ship
LENRK15
USD9.60
Availability: 5 weeks
 
15 Amp Rating
Quick Ship
LENRK20
USD9.60
Availability: 5 weeks
 
20 Amp Rating
Quick Ship
LENRK30
USD9.60
Availability: 5 weeks
 
30 Amp Rating
Quick Ship
LENRK60
USD17.75
Availability: 5 weeks
 
60 Amp Rating
Quick Ship
LESRK5
USD24.00
Availability: 5 weeks
 
5 Amp Rating
Quick Ship
LESRK10
USD24.00
Availability: 5 weeks
 
10 Amp Rating
Quick Ship
LESRK15
USD21.25
Availability: 5 weeks
 
15 Amp Rating
Quick Ship
LESRK20
USD21.25
Availability: 5 weeks
 
20 Amp Rating
Quick Ship
LESRK30
USD21.25
Availability: 5 weeks
 
30 Amp Rating
Quick Ship
LESRK40
USD36.50
Availability: 5 weeks
 
40 Amp Rating
Quick Ship
LESRK50
USD36.50
Availability: 5 weeks
 
50 Amp Rating
Quick Ship
LESRK60
USD36.50
Availability: 5 weeks
 
60 Amp Rating
All amounts shown in USD
Note: Comes with instruction sheet.
Ordering Example: (1) ECNR1 1 amp fuse, USD9.20  plus (1) LENRK10 10 amp fuse, USD12.00, USD9.20 + 12.00 = USD21.20