Dual Element Time-Delay Fuses Class Rk5 and Rk1

ECNR/ECSR/LENRK/LESRK Fuses

^USD103.00 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

USD103.00

Availability: 3 weeks

150 Amp Rating

ECNR200

USD103.00

Availability: 3 weeks

200 Amp Rating

ECSR125

USD160.00

Availability: 3 weeks

125 Amp Rating

ECSR150

USD160.00

Availability: 3 weeks

150 Amp Rating

ECSR200

USD160.00

Availability: 3 weeks

200 Amp Rating

LESRK200

USD237.00

Availability: 3 weeks

200 Amp Rating

ECNR70

USD45.50

Availability: 5 weeks

70 Amp Rating

ECNR80

USD45.50

Availability: 5 weeks

80 Amp Rating

ECNR90

USD45.50

Availability: 5 weeks

90 Amp Rating

ECNR100

USD45.50

Availability: 5 weeks

100 Amp Rating

ECSR70

USD87.00

Availability: 5 weeks

70 Amp Rating

ECSR80

USD87.00

Availability: 5 weeks

80 Amp Rating

ECSR90

USD87.00

Availability: 5 weeks

90 Amp Rating

ECSR100

USD87.00

Availability: 5 weeks

100 Amp Rating

LESRK100

USD128.00

Availability: 5 weeks

100 Amp Rating

ECNR1

USD16.25

Availability: 1 week

1 Amp Rating

ECNR2

USD14.75

Availability: 5 weeks

2 Amp Rating

ECNR3

USD16.25

Availability: 5 weeks

3 Amp Rating

ECNR5

USD16.25

Availability: 5 weeks

5 Amp Rating

ECNR8

USD16.25

Availability: 5 weeks

8Amp Rating

ECNR10

USD13.75

Availability: 1 week

10 Amp Rating

ECNR15

USD35.00

Availability: 1 week

15 Amp Rating

ECNR20

USD10.75

Availability: 1 week

20 Amp Rating

ECNR25

USD10.75

Availability: 5 weeks

25 Amp Rating

ECNR30

USD10.75

Availability: 5 weeks

30 Amp Rating

ECNR35

USD20.25

Availability: 5 weeks

35 Amp Rating

ECNR40

USD20.25

Availability: 5 weeks

40 Amp Rating

ECNR45

USD20.25

Availability: 5 weeks

45 Amp Rating

ECNR50

USD20.25

Availability: 5 weeks

50 Amp Rating

ECNR60

USD20.25

Availability: 5 weeks

60 Amp Rating

ECSR3

USD27.50

Availability: 5 weeks

3 Amp Rating

ECSR4

USD27.50

Availability: 5 weeks

4 Amp Rating

ECSR5

USD27.50

Availability: 5 weeks

5 Amp Rating

ECSR6

USD27.50

Availability: 5 weeks

6 Amp Rating

ECSR6.25

USD29.50

Availability: 5 weeks

6.25 Amp Rating

ECSR7

USD29.50

Availability: 5 weeks

7 Amp Rating

ECSR8

USD27.50

Availability: 5 weeks

8 Amp Rating

ECSR10

USD27.50

Availability: 5 weeks

10 Amp Rating

ECSR12

USD27.50

Availability: 5 weeks

12 Amp Rating

ECSR15

USD24.75

Availability: 5 weeks

15 Amp Rating

ECSR17.5

USD24.75

Availability: 5 weeks

17.5 Amp Rating

ECSR20

USD24.75

Availability: 5 weeks

20 Amp Rating

ECSR25

USD24.75

Availability: 5 weeks

25 Amp Rating

ECSR30

USD24.75

Availability: 1 week

30 Amp Rating

ECSR35

USD42.50

Availability: 5 weeks

35 Amp Rating

ECSR40

USD42.50

Availability: 5 weeks

40 Amp Rating

ECSR45

USD42.50

Availability: 5 weeks

45 Amp Rating

ECSR50

USD42.50

Availability: 5 weeks

50 Amp Rating

ECSR60

USD42.50

Availability: 1 week

60 Amp Rating

LENRK10

USD20.25

Availability: 5 weeks

10 Amp Rating

LENRK15

USD16.25

Availability: 5 weeks

15 Amp Rating

LENRK20

USD16.25

Availability: 5 weeks

20 Amp Rating

LENRK30

USD16.25

Availability: 5 weeks

30 Amp Rating

LENRK60

USD30.00

Availability: 5 weeks

60 Amp Rating

LESRK5

USD40.50

Availability: 5 weeks

5 Amp Rating

LESRK10

USD40.50

Availability: 5 weeks

10 Amp Rating

LESRK15

USD36.00

Availability: 5 weeks

15 Amp Rating

LESRK20

USD36.00

Availability: 5 weeks

20 Amp Rating

LESRK30

USD36.00

Availability: 5 weeks

30 Amp Rating

LESRK40

USD62.00

Availability: 5 weeks

40 Amp Rating

LESRK50

USD62.00

Availability: 5 weeks

50 Amp Rating

LESRK60

USD62.00

Availability: 5 weeks

60 Amp Rating

† All amounts shown in USD
Note: Comes with instruction sheet.
Ordering Example: (1) ECNR1 1 amp fuse, USD16.25 plus (1) LENRK10 10 amp fuse, USD20.25, USD16.25 + 20.25 = USD36.50