Dual Element Time-Delay Fuses Class Rk5 and Rk1

ECNR/ECSR/LENRK/LESRK Fuses

^USD90.00 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

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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

USD90.00

Availability: 3 weeks

150 Amp Rating

ECNR200

USD90.00

Availability: 3 weeks

200 Amp Rating

ECSR125

USD140.00

Availability: 3 weeks

125 Amp Rating

ECSR150

USD140.00

Availability: 3 weeks

150 Amp Rating

ECSR200

USD140.00

Availability: 3 weeks

200 Amp Rating

LESRK200

USD207.00

Availability: 3 weeks

200 Amp Rating

ECNR70

USD39.50

Availability: 5 weeks

70 Amp Rating

ECNR80

USD39.50

Availability: 5 weeks

80 Amp Rating

ECNR90

USD39.50

Availability: 5 weeks

90 Amp Rating

ECNR100

USD39.50

Availability: 5 weeks

100 Amp Rating

ECSR70

USD76.00

Availability: 5 weeks

70 Amp Rating

ECSR80

USD76.00

Availability: 5 weeks

80 Amp Rating

ECSR90

USD76.00

Availability: 5 weeks

90 Amp Rating

ECSR100

USD76.00

Availability: 5 weeks

100 Amp Rating

LESRK100

USD112.00

Availability: 5 weeks

100 Amp Rating

ECNR1

USD13.50

Availability: 1 week

1 Amp Rating

ECNR2

USD13.00

Availability: 5 weeks

2 Amp Rating

ECNR3

USD14.25

Availability: 5 weeks

3 Amp Rating

ECNR5

USD14.25

Availability: 5 weeks

5 Amp Rating

ECNR8

USD14.25

Availability: 5 weeks

8Amp Rating

ECNR10

USD12.00

Availability: 5 weeks

10 Amp Rating

ECNR15

USD9.50

Availability: 1 week

15 Amp Rating

ECNR20

USD9.50

Availability: 5 weeks

20 Amp Rating

ECNR25

USD9.50

Availability: 5 weeks

25 Amp Rating

ECNR30

USD9.50

Availability: 5 weeks

30 Amp Rating

ECNR35

USD17.50

Availability: 5 weeks

35 Amp Rating

ECNR40

USD17.50

Availability: 5 weeks

40 Amp Rating

ECNR45

USD17.50

Availability: 5 weeks

45 Amp Rating

ECNR50

USD17.50

Availability: 5 weeks

50 Amp Rating

ECNR60

USD17.50

Availability: 5 weeks

60 Amp Rating

ECSR3

USD24.25

Availability: 5 weeks

3 Amp Rating

ECSR4

USD24.25

Availability: 5 weeks

4 Amp Rating

ECSR5

USD24.25

Availability: 5 weeks

5 Amp Rating

ECSR6

USD24.25

Availability: 5 weeks

6 Amp Rating

ECSR6.25

USD26.00

Availability: 5 weeks

6.25 Amp Rating

ECSR7

USD26.00

Availability: 5 weeks

7 Amp Rating

ECSR8

USD24.25

Availability: 5 weeks

8 Amp Rating

ECSR10

USD24.25

Availability: 5 weeks

10 Amp Rating

ECSR12

USD24.25

Availability: 5 weeks

12 Amp Rating

ECSR15

USD21.50

Availability: 5 weeks

15 Amp Rating

ECSR17.5

USD21.50

Availability: 5 weeks

17.5 Amp Rating

ECSR20

USD21.50

Availability: 5 weeks

20 Amp Rating

ECSR25

USD21.50

Availability: 5 weeks

25 Amp Rating

ECSR30

USD21.50

Availability: 1 week

30 Amp Rating

ECSR35

USD37.00

Availability: 5 weeks

35 Amp Rating

ECSR40

USD37.00

Availability: 5 weeks

40 Amp Rating

ECSR45

USD37.00

Availability: 5 weeks

45 Amp Rating

ECSR50

USD37.00

Availability: 5 weeks

50 Amp Rating

ECSR60

USD37.00

Availability: 5 weeks

60 Amp Rating

LENRK10

USD17.75

Availability: 5 weeks

10 Amp Rating

LENRK15

USD14.25

Availability: 5 weeks

15 Amp Rating

LENRK20

USD14.25

Availability: 5 weeks

20 Amp Rating

LENRK30

USD14.25

Availability: 5 weeks

30 Amp Rating

LENRK60

USD26.50

Availability: 5 weeks

60 Amp Rating

LESRK5

USD35.50

Availability: 5 weeks

5 Amp Rating

LESRK10

USD35.50

Availability: 5 weeks

10 Amp Rating

LESRK15

USD31.50

Availability: 5 weeks

15 Amp Rating

LESRK20

USD31.50

Availability: 5 weeks

20 Amp Rating

LESRK30

USD31.50

Availability: 5 weeks

30 Amp Rating

LESRK40

USD54.00

Availability: 5 weeks

40 Amp Rating

LESRK50

USD54.00

Availability: 5 weeks

50 Amp Rating

LESRK60

USD54.00

Availability: 5 weeks

60 Amp Rating

† All amounts shown in USD
Note: Comes with instruction sheet.
Ordering Example: (1) ECNR1 1 amp fuse, USD13.50 plus (1) LENRK10 10 amp fuse, USD17.75, USD13.50 + 17.75 = USD31.25