Dual Element Time-Delay Fuses Class Rk5 and Rk1

ECNR/ECSR/LENRK/LESRK Fuses

ECNR/ECSR/LENRK/LESRK Fuses:Dual Element Time-Delay Fuses Class Rk5 and Rk1

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^$ 27.00 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
View related products - Power Products

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

To Order (Specify Model Number)

Part Number	Availability	Price	Description	Qty.

Single Packages

ECNR150		$27.00	150 Amp Rating	qty.

ECNR200		$27.00	200 Amp Rating	qty.

ECSR125		$47.00	125 Amp Rating	qty.

ECSR150		$47.00	150 Amp Rating	qty.

ECSR200		$47.00	200 Amp Rating	qty.

LESRK200		$83.00	200 Amp Rating	qty.


Package of 5

ECNR70-5PK		$61.00	70 Amp Rating	qty.

ECNR80-5PK		$61.00	80 Amp Rating	qty.

ECNR90-5PK		$64.00	90 Amp Rating	qty.

ECNR100-5PK		$61.00	100 Amp Rating	qty.

ECSR70-5PK		$234.00	70 Amp Rating	qty.

ECSR80-5PK		$117.00	80 Amp Rating	qty.

ECSR90-5PK		$117.00	90 Amp Rating	qty.

ECSR100-5PK		$117.00	100 Amp Rating	qty.

LESRK100-5PK		$206.00	100 Amp Rating	qty.


Package of 10

ECNR1-10PK		$42.50	1 Amp Rating	qty.

ECNR2-10PK		$40.50	2 Amp Rating	qty.

ECNR3-10PK		$39.00	3 Amp Rating	qty.

ECNR5-10PK		$37.00	5 Amp Rating	qty.

ECNR8-10PK		$39.00	8Amp Rating	qty.

ECNR10-10PK		$37.00	10 Amp Rating	qty.

ECNR15-10PK		$30.00	15 Amp Rating	qty.

ECNR20-10PK		$30.00	20 Amp Rating	qty.

ECNR25-10PK		$30.00	25 Amp Rating	qty.

ECNR30-10PK		$30.00	30 Amp Rating	qty.

ECNR35-10PK		$55.00	35 Amp Rating	qty.

ECNR40-10PK		$55.00	40 Amp Rating	qty.

ECNR45-10PK		$55.00	45 Amp Rating	qty.

ECNR50-10PK		$55.00	50 Amp Rating	qty.

ECNR60-10PK		$55.00	60 Amp Rating	qty.

ECSR3-10PK		$75.00	3 Amp Rating	qty.

ECSR4-10PK		$75.00	4 Amp Rating	qty.

ECSR5-10PK		$75.00	5 Amp Rating	qty.

ECSR6-10PK		$75.00	6 Amp Rating	qty.

ECSR6.25-10PK		$79.00	6.25 Amp Rating	qty.

ECSR7-10PK		$79.00	7 Amp Rating	qty.

ECSR8-10PK		$75.00	8 Amp Rating	qty.

ECSR10-10PK		$75.00	10 Amp Rating	qty.

ECSR12-10PK		$75.00	12 Amp Rating	qty.

ECSR15-10PK		$66.00	15 Amp Rating	qty.

ECSR17.5-10PK		$66.00	17.5 Amp Rating	qty.

ECSR20-10PK		$66.00	20 Amp Rating	qty.

ECSR25-10PK		$66.00	25 Amp Rating	qty.

ECSR30-10PK		$66.00	30 Amp Rating	qty.

ECSR35-10PK		$113.00	35 Amp Rating	qty.

ECSR40-10PK		$113.00	40 Amp Rating	qty.

ECSR45-10PK		$113.00	45 Amp Rating	qty.

ECSR50-10PK		$113.00	50 Amp Rating	qty.

ECSR60-10PK		$113.00	60 Amp Rating	qty.

LENRK10-10PK		$67.00	10 Amp Rating	qty.

LENRK15-10PK		$54.00	15 Amp Rating	qty.

LENRK20-10PK		$54.00	20 Amp Rating	qty.

LENRK30-10PK		$54.00	30 Amp Rating	qty.

LENRK60-10PK		$99.00	60 Amp Rating	qty.

LESRK5-10PK		$131.00	5 Amp Rating	qty.

LESRK10-10PK		$131.00	10 Amp Rating	qty.

LESRK15-10PK		$117.00	15 Amp Rating	qty.

LESRK20-10PK		$117.00	20 Amp Rating	qty.

LESRK30-10PK		$117.00	30 Amp Rating	qty.

LESRK40-10PK		$200.00	40 Amp Rating	qty.

LESRK50-10PK		$200.00	50 Amp Rating	qty.

LESRK60-10PK		$200.00	60 Amp Rating	qty.

† All dollar amounts on this site are shown in US currency.

Note: Comes with instruction sheet.
Ordering Example: (1) ECNR1-10PK ECNR1-10PK, amp Amp fuse, package of 10, $42.50, plus (1) LENRK10-10PK 5 amp fuse, package of 10, $67.00, $42.50 + 67.00 = $109.50

Keywords:Dual Element Time-Delay Fuses Class Rk5 and Rk1