®
Bu s s m a n n
Lo w -P e a k ®
Du a l-Ele m e n t Tim e -De la y Fu s e s
Cla s s RK1 – 2 5 0 Vo lt s AC/DC
LP N-RK
7 0 -6 0 0 A
Dim e ns iona l Da ta
A
B
Dim e ns ions (inches)
Ampere Ratings
70-100
“A”
“B”
5.88 (± 0.062)
7.13 (± 0.062)
8.63 (± 0.094)
10.38 (± 0.094)
1.10 (± 0.020)
1.61 (± 0.020)
2.36 (± 0.020)
2.88 (± 0.020)
110-200
225-400
450-600
Fe a ture s :
• 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.
Ca ta log Sym bol: LPN-RK_SP
Am pe re Ra ting: 70 to 600A
Volta ge Ra tings :
ac: 250V (or less)
dc: 250V (or less)
• Provides protection against single-phase motor damage.
• Low watt loss power consumption.
• Electrically isolated end caps.
Inte rrupting Ra tings :
ac: 300,000A RMS Sym.
dc: 100,000A
Age nc y Inform a tion:
• 250Vdc, UL Listed.
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
Applic a tions :
• Branch distribution
• Motors
• Transformers
• Solenoids
• General purpose circuits
Ca ta log Num be rs
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
—
Re c om m e nde d fus e bloc ks for
Cla s s R 2 5 0 V fus e s
Available with tin plate option. Add Suffix “-TP” (Ex.: LPN-RK-100SP-TP)
Se e Da ta She e t: 1 1 1 0
Ca rton Qua ntity a nd We ight—LPN-RK (2 5 0 Va c )
Weight*
Ampere
Ratings
Carton
Qty.
Lbs.
1.9
0.9
2.0
3.0
Kg.
0.9
0.4
0.9
1.4
Fus e Re duc e rs For Cla s s R Fus e s
70–100
5
1
1
1
Desired
Fuse (Case)
Size
Catalog Number
(Pairs)
110–200
Equipment
Fuse Clips
225–400
600V
450–600
200A
100A
100A
200A
100A
200A
400A
No. 2621-R***
No. 2641-R
No. 642-R
*Weight per carton.
** Meets all performance requirements of UL Standard 248-12 for Class RK1 fuses.
400A
No. 2661-R
No. 2662-R
No. 2664-R*
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
*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.
Form No. LPN-RK 70-600
Page 1 of 2
5-19-04
SB04174
Data Sheet: 1004