NCLR2 Brochure
2016-06-25
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Edison®
NCLR
Class RK1 250Vac, 1 to 600A
Fast-Acting Fuses
Form No. NCLR
Page 1 of 2
Data Sheet #1313
07-10-07
BU-SB07255
Catalog Symbol: NCLR (250V)
Fast-Acting
Current-Limiting
Volts: 250Vac (or less)
Amps: 1 to 600A
IR: 200kA RMS Sym.
Tube Material: Glass Melamine
Operating Temp.: –40°C to +85°C
Storage Temp.: –55°C to +85°C
Agency Information: CE, UL Listed, Std. 248-12, Class
RK1, Guide JDDZ, File E162363, CSA Certified, HRCI-R per
C22.2 No. 248.12, Class 1422-02, File 53787
Features
• Single-element, fast-acting fuses with minimal time-
delay.
• Provides a high degree of short-circuit current-limitation
(component protection).
• Particularly suited for circuits and loads with no heavy
surge currents of motors, transformers, solenoids, and
welders.
• NCLR fuses are commonly used to protect circuit
breakers with lower interrupting ratings.
• If used in circuits with surge currents (motors, etc.) must
be sized to prevent unwanted opening and thus only
provide short-circuit protection.
• Incorporates Class R rejection feature. Can be inserted
in non-rejection type fuse holders. Thus, can physically
and electrically replace fast-acting Class H, K1, K5,
RK5, and other fast-acting fuses.
Dimensions (inches)
Catalog Numbers (amps)
NCLR1 NCLR20 NCLR80 NCLR250
NCLR3 NCLR25 NCLR90 NCLR300
NCLR4 NCLR30 NCLR100 NCLR350
NCLR5 NCLR35 NCLR110 NCLR400
NCLR6 NCLR40 NCLR125 NCLR450
NCLR8 NCLR45 NCLR150 NCLR500
NCLR10 NCLR50 NCLR175 NCLR600
NCLR12 NCLR60 NCLR200
NCLR15 NCLR70 NCLR225
Carton Quantity and Weight
Carton Weight per Carton
Amps Quantity lbs kg
1–30 10 0.45 0.20
40–60 10 1.82 0.82
70–100 5 1.85 0.84
110–200 1 1.05 0.48
225–400 1 2.38 1.08
450–600 1 3.50 1.59
Edison®
NCLR
Class RK1 250Vac, 1 to 600A
Fast-Acting Fuses
Form No. NCLR
Page 2 of 2
Data Sheet #1313
07-10-07
BU-SB07255
Current Limitation Curves Time-Current Characteristic Curves– Average
Melt
The only controlled copy of this document is the electronic read-only version maintained by Cooper Bussmann. All other copies of this document are by definition uncontrolled. This bulletin
is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Cooper Bussmann reserves the right, with-
out notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update, without
notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
Class RK1 Fuse Blocks (250V) Catalog Data
(Clip Retaining Spring Standard, Suffix “R”)
Terminal Type (Suffix No.)
Basic Screw Box Lug 1⁄4"
Catalog — w/ Pres. — w/ Clip Quick
Amps Number Plate CU only Connect
0.1 1 R25030-1 SR PR CR COR QR*
to 2 R25030-2 SR PR CR COR QR*
30 3 R25030-3 SR PR CR COR QR*
31 1 R25060-1 SR* — CR COR —
to 2 R25060-2 SR* — CR COR —
60 3 R25060-3 SR* — CR COR —
61 1 R25100-1 — — CR COR —
to 2 R25100-2 — — CR COR —
100 3 R25100-3 — — CR COR —
101 to 1 R25200-1 — — CR COR —
200 3 R25200-3 — — CR COR —
201 to 1 R25400-1 — — CR* COR* —
400 3 R25400-3 — — CR COR* —
401 to 1 R25600-1 — — CR — —
600 3 R25600-3 — — CR — —
*UL Recognized, No CSA Certification.
Pole
