Bussmann
®
Low-Peak
®
Dual-Element Time-Delay Fuses
Class RK1 – 250 Volts AC/DC
Dimensional Data
LPN-RK
70-600A
NEW
A
DES
B
IGN
Dimensions
(inches)
Ampere Ratings
70-100
110-200
225-400
450-600
5.88
7.13
8.63
10.38
“A”
(± 0.062)
(± 0.062)
(± 0.094)
(± 0.094)
1.10
1.61
2.36
2.88
“B”
(± 0.020)
(± 0.020)
(± 0.020)
(± 0.020)
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-80SP
LPN-RK-90SP
LPN-RK-100SP
LPN-RK-110SP
LPN-RK-125SP
LPN-RK-150SP
LPN-RK-175SP
LPN-RK-200SP
LPN-RK-225SP
LPN-RK-250SP
LPN-RK-300SP
LPN-RK-350SP
LPN-RK-400SP
LPN-RK-450SP
LPN-RK-500SP
LPN-RK-600SP
—
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
Available with tin plate option. Add Suffix “-TP” (Ex.: LPN-RK-100SP-TP)
Recommended fuseblocks for
Class R 250V fuses
See Data Sheet: 1110
Carton Quantity and Weight—LPN-RK (250Vac)
Ampere
Ratings
70–100
110–200
225–400
Carton
Qty.
5
1
1
Weight*
Lbs.
1.9
0.9
2.0
Kg.
0.9
0.4
0.9
Equipment
Fuse Clips
200A
400A
Fuse Reducers For Class R Fuses
Desired
Fuse (Case)
Size
100A
100A
200A
100A
Catalog Number
(Pairs)
600V
No. 2621-R***
No. 2641-R
No. 642-R
No. 2661-R
No. 2662-R
No. 2664-R*
450–600
1
3.0
1.4
*Weight per carton.
** Meets all performance requirements of UL Standard 248-12 for Class RK1 fuses.
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.
600A
200A
400A
*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.
5-19-04
SB04174
Form No. LPN-RK 70-600
Page 1 of 2
Data Sheet: 1004
COOPER [ COOPER BUSSMANN, INC. ]
