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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

£29.50 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.
Availability
Price
Description
Qty
ECNR150
Star
Availability: 3 weeks  
£29.50   
150 Amp Rating
 
ECNR200
Star
Availability: 3 weeks  
£29.50   
200 Amp Rating
 
ECSR125
Star
Availability: 3 weeks  
£51.00   
125 Amp Rating
 
ECSR150
Star
Availability: 3 weeks  
£51.00   
150 Amp Rating
 
ECSR200
Star
Availability: 3 weeks  
£51.00   
200 Amp Rating
 
LESRK200
Star
Availability: 3 weeks  
£76.00   
200 Amp Rating
 
ECNR70
Star
Availability: 5 weeks  
£13.50   
70 Amp Rating
 
ECNR80
Star
Availability: 5 weeks  
£13.50   
80 Amp Rating
 
ECNR90
Star
Availability: 5 weeks  
£14.00   
90 Amp Rating
 
ECNR100
Star
Availability: 5 weeks  
£13.50   
100 Amp Rating
 
ECSR70
Star
Availability: 3 weeks  
£25.50   
70 Amp Rating
 
ECSR80
Star
Availability: 3 weeks  
£25.50   
80 Amp Rating
 
ECSR90
Star
Availability: 3 weeks  
£25.50   
90 Amp Rating
 
ECSR100
Star
Availability: 3 weeks  
£25.50   
100 Amp Rating
 
LESRK100
Star
Availability: 3 weeks  
£38.00   
100 Amp Rating
 
ECNR1
Star
Availability: 5 weeks  
£4.60   
1 Amp Rating
 
ECNR2
Star
Availability: 5 weeks  
£4.40   
2 Amp Rating
 
ECNR3
Star
Availability: 5 weeks  
£4.30   
3 Amp Rating
 
ECNR5
Star
Availability: 5 weeks  
£4.10   
5 Amp Rating
 
ECNR8
Star
Availability: 5 weeks  
£4.30   
8Amp Rating
 
ECNR10
Star
Availability: 5 weeks  
£4.10   
10 Amp Rating
 
ECNR15
Star
Availability: 5 weeks  
£3.30   
15 Amp Rating
 
ECNR20
Star
Availability: 5 weeks  
£3.30   
20 Amp Rating
 
ECNR25
Star
Availability: 5 weeks  
£3.30   
25 Amp Rating
 
ECNR30
Star
Availability: 5 weeks  
£3.30   
30 Amp Rating
 
ECNR35
Star
Availability: 5 weeks  
£6.00   
35 Amp Rating
 
ECNR40
Star
Availability: 5 weeks  
£6.00   
40 Amp Rating
 
ECNR45
Star
Availability: 5 weeks  
£6.00   
45 Amp Rating
 
ECNR50
Star
Availability: 5 weeks  
£6.00   
50 Amp Rating
 
ECNR60
Star
Availability: 5 weeks  
£6.00   
60 Amp Rating
 
ECSR3
Star
Availability: 3 weeks  
£8.20   
3 Amp Rating
 
ECSR4
Star
Availability: 3 weeks  
£8.20   
4 Amp Rating
 
ECSR5
Star
Availability: 3 weeks  
£8.20   
5 Amp Rating
 
ECSR6
Star
Availability: 3 weeks  
£8.20   
6 Amp Rating
 
ECSR6.25
Star
Availability: 3 weeks  
£8.60   
6.25 Amp Rating
 
ECSR7
Star
Availability: 3 weeks  
£8.60   
7 Amp Rating
 
ECSR8
Star
Availability: 3 weeks  
£8.20   
8 Amp Rating
 
ECSR10
Star
Availability: 3 weeks  
£8.20   
10 Amp Rating
 
ECSR12
Star
Availability: 3 weeks  
£8.20   
12 Amp Rating
 
ECSR15
Star
Availability: 3 weeks  
£7.20   
15 Amp Rating
 
ECSR17.5
Star
Availability: 3 weeks  
£7.20   
17.5 Amp Rating
 
ECSR20
Star
Availability: 3 weeks  
£7.20   
20 Amp Rating
 
ECSR25
Star
Availability: 3 weeks  
£7.20   
25 Amp Rating
 
ECSR30
Star
Availability: 3 weeks  
£7.20   
30 Amp Rating
 
ECSR35
Star
Availability: 3 weeks  
£12.50   
35 Amp Rating
 
ECSR40
Star
Availability: 3 weeks  
£12.50   
40 Amp Rating
 
ECSR45
Star
Availability: 3 weeks  
£11.75   
45 Amp Rating
 
ECSR50
Star
Availability: 3 weeks  
£12.50   
50 Amp Rating
 
ECSR60
Star
Availability: 3 weeks  
£12.50   
60 Amp Rating
 
LENRK10
Star
Availability: 3 weeks  
£6.00   
10 Amp Rating
 
LENRK15
Star
Availability: 3 weeks  
£4.80   
15 Amp Rating
 
LENRK20
Star
Availability: 3 weeks  
£4.80   
20 Amp Rating
 
LENRK30
Star
Availability: 3 weeks  
£4.80   
30 Amp Rating
 
LENRK60
Star
Availability: 3 weeks  
£8.80   
60 Amp Rating
 
LESRK5
Star
Availability: 3 weeks  
£12.00   
5 Amp Rating
 
LESRK10
Star
Availability: 3 weeks  
£12.00   
10 Amp Rating
 
LESRK15
Star
Availability: 3 weeks  
£10.75   
15 Amp Rating
 
LESRK20
Star
Availability: 3 weeks  
£10.75   
20 Amp Rating
 
LESRK30
Star
Availability: 3 weeks  
£10.75   
30 Amp Rating
 
LESRK40
Star
Availability: 3 weeks  
£18.25   
40 Amp Rating
 
LESRK50
Star
Availability: 3 weeks  
£18.25   
50 Amp Rating
 
LESRK60
Star
Availability: 3 weeks  
£18.25   
60 Amp Rating
 
All amounts shown in EUR, GBP, or USD
Note: Comes with instruction sheet.
Ordering Example: (1) ECNR1 1 amp fuse, £4.60  plus (1) LENRK10 10 amp fuse, £6.00, £4.60 + 6.00 = £10.60