LOW-PEAK®LPN-RK
Dual-Element, Time-Delay Fuses ⁄Ω¡º-60A
Class RK1 – 250 Volt
Form No. LPN-RK 0-60
Page 1 of 2
Data Sheet: 1003
Bussmann®
Features:
• Current-limitation for maximum short-circuit protection.
• Type 2 protection for IEC and NEMA starters when
properly sized.
• High inrush current motor protection.
• Time-delay permits 130% FLA sizing for back-up motor
protection.
• Protection against single-phase motor damage.
• Low watt loss power consumption.
• Electrically isolated end caps.
• 125Vdc, UL Listed.
0.56" (± 0.008)
2"
(± 0.31)
⁄Ω¡ºA to 30A
0.81" (± 0.008)
3"
(± 0.31)
35A to 60A
Catalog Symbol: LPN-RK_SP
Dual-Element, Time-Delay – 10 seconds (minimum) at 500%
rated current (8 seconds for 0-30A sizes)
Current-Limiting
Ampere Rating: ⁄Ω¡º to 60A
Voltage Rating: 250Vac (or less)
125Vdc (or less)
Interrupting Rating:
AC: 300,000A RMS Sym.
DC: 100,000 Amperes
Agency Information:
UL Listed – Special Purpose*, Guide JFHR, File E56412
CSA Certified (200,000AIR), Class 1422-02, File 53787
Class RK1 per CSA C22.2, No. 248.12
*Meets all performance requirements of UL Standard 248-12 for Class RK1 fuses.
Catalog Numbers
LPN-RK-⁄Ω¡ºSP LPN-RK-2SP LPN-RK-9SP
LPN-RK-⁄fiΩ¡ººSP LPN-RK-2⁄Ω¢SP LPN-RK-10SP
LPN-RK-¤Ω¡ºSP LPN-RK-2⁄Ω™SP LPN-RK-12SP
LPN-RK-‹Ω¡ºSP LPN-RK-2°Ω¡ºSP LPN-RK-15SP
LPN-RK-›Ω¡ºSP LPN-RK-3SP LPN-RK-17⁄Ω™SP
LPN-RK-⁄Ω™SP LPN-RK-3¤Ω¡ºSP LPN-RK-20SP
LPN-RK-flΩ¡ºSP LPN-RK-3⁄Ω™SP LPN-RK-25SP
LPN-RK-°Ω¡ºSP LPN-RK-4SP LPN-RK-30SP
LPN-RK-1SP LPN-RK-4⁄Ω™SP LPN-RK-35SP
LPN-RK-1⁄Ω•SP LPN-RK-5SP LPN-RK-40SP
LPN-RK-1⁄Ω¢SP LPN-RK-5flΩ¡ºSP LPN-RK-45SP
LPN-RK-1›Ω¡ºSP LPN-RK-6SP LPN-RK-50SP
LPN-RK-1flΩ¡ºSP LPN-RK-6⁄Ω¢SP LPN-RK-60SP
LPN-RK-1°Ω¡ºSP LPN-RK-8SP —
Fuse Reducers For Class R Fuses
Desired Catalog Number
Equipment Fuse (Case) (Pairs)
Fuse Clips Size 250V
60A 30A No. 263-R
100A 30A No. 213-R
60A No. 216-R
200A 60A No. 226-R
Carton Quantity and Weight
Ampere Carton Weight**
Ratings Qty. Lbs. Kg.
0–30 10 0.5 0.227
35–60 10 1.2 0.544
**Weight per carton.
Dimensional Data
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.
Recommended fuseblocks for
Class R 250V fuses
See Data Sheet: 1110
10-2-02 SB02295
LOW-PEAK®LPN-RK
Dual-Element, Time-Delay Fuses ⁄Ω¡º-60A
Class RK1 – 250 Volt
Form No. LPN-RK 0-60
Page 2 of 2
Data Sheet: 1003
Bussmann®
The only controlled copy of this Data Sheet is the electronic read-only version located on the
Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This
bulletin is intended to clearly present comprehensive product data and provide technical informa-
tion that will help the end user with design applications. Bussmann reserves the right, without
notice, to change design or construction of any products and to discontinue or limit distribution of
any products. 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.
.1
.2
.15
.3
.4
.6 .5
.8
11.25
1.6 2
2.5
3.2 4
56.25
8
10
12
AMPERE
RATING
300
100
10
1
.1
.01
.1
1
10
100
1,000
RMS SYMMETRICAL CURRENT IN AMPERES
TIME IN SECONDS
A
B
60
30
AMPERE
RATING
400,000
100,000
10,000
1,000
1,000
10,000
100,000
200,000
RMS SYMMETRICAL CURRENTS IN AMPERES
A–B=ASYMMETRICAL AVAILABLE PEAK (2.3 x SYMM RMS AMPS)
INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS
Current-Limitation Curves
20A
60A
30A
AMPERE
RATING
15A
RMS SYMMETRICAL CURRENT IN AMPERES
20
100
1,000
10,000
TIME IN SECONDS
300
100
10
1
.1
.01
Time-Current Characteristic Curves–Average Melt
10-2-02 SB02295
