LPN-RK

Dual-Element Time-Delay Fuses

70-600A

Class RK1 – 250 Volts AC/DC

Form No. LPN-RK 70-600

Page 1 of 2

Data Sheet: 1004

Features:

• Current limiting for maximum short-circuit protection.

• Type 2 protection for IEC and NEMA starters when properly

sized.

• High in-rush current motor protection.

• Time-delay that permits 130% FLA sizing for back-up motor

protection.

• Provides protection against single-phase motor damage.

• Low watt loss power consumption.

• Electrically isolated end caps.

• 250Vdc, UL Listed.

Applications:

• Branch distribution

• Motors

• Transformers

• Solenoids

• General purpose circuits

A

B

Catalog Symbol: LPN-RK_SP

Ampere Rating: 70 to 600A

Voltage Ratings:

ac: 250V (or less)

dc: 250V (or less)

Interrupting Ratings:

ac: 300,000A RMS Sym.

dc: 100,000A

Agency Information:

UL Listed–Special Purpose**, Guide JFHR, File E56412

CSA Certified, (200,000 AIR) Class 1422-02, File 53787,

Class RK1 per CSA C22.2 No. 248.12

Catalog Numbers

LPN-RK-70SP

LPN-RK-150SP

LPN-RK-350SP

LPN-RK-80SP

LPN-RK-175SP

LPN-RK-400SP

LPN-RK-90SP

LPN-RK-200SP

LPN-RK-450SP

LPN-RK-100SP

LPN-RK-225SP

LPN-RK-500SP

LPN-RK-110SP

LPN-RK-250SP

LPN-RK-600SP

LPN-RK-125SP

LPN-RK-300SP

—

Available with tin plate option. Add Suffix “-TP” (Ex.: LPN-RK-100SP-TP)

Carton Quantity and Weight—LPN-RK (250Vac)

Ampere

Carton

Weight*

Ratings

Qty.

Lbs.

Kg.

70–100

5

1.9

0.9

110–200

1

0.9

0.4

225–400

1

2.0

0.9

450–600

1

3.0

1.4

*Weight per carton.

** Meets all performance requirements of UL Standard 248-12 for Class RK1 fuses.

Dimensional Data

Dimensions (inches)

Ampere Ratings

“A”

“B”

70-100

5.88 (± 0.062)

1.10 (± 0.020)

110-200

7.13 (± 0.062)

1.61 (± 0.020)

225-400

8.63 (± 0.094)

2.36 (± 0.020)

450-600

10.38 (± 0.094)

2.88 (± 0.020)

N

NE

EW

W DD

E

ES

SIIG

GN

N

CE logo denotes compliance with European Union Low Voltage Directive

(50-1000Vac, 75-1500Vdc). Refer to Data Sheet: 8002 or contact

Bussmann Application Engineering at 636-527-1270 for more information.

Fuse Reducers For Class R Fuses

Desired

Catalog Number

Equipment

Fuse (Case)

(Pairs)

Fuse Clips

Size

600V

200A

100A

No. 2621-R***

400A

100A

No. 2641-R

200A

No. 642-R

100A

No. 2661-R

600A

200A

No. 2662-R

400A

No. 2664-R*

*Single reducer only (pair not required).

***Reducer No. 2621-R does not apply to LPN-RK-70SP to LPN-RK-100SP

Fuses.

For additional information, see Data Sheet: 1118.

Recommended fuseblocks for

Class R 250V fuses

See Data Sheet: 1110

5-19-04

SB04174