Bussmann
®
LOW-PEAK
®
Dual-Element, Time-Delay Fuses
Class RK1 – 600 Volt
Dimensional Data
5"
(± 0.31)
.81" (±0.008)
⁄Ω¡ºA
to 30A
35A to 60A
5.5"
(± 0.31)
LPS-RK
0-60 Amps
1.06" (±0.008)
**Meets all performance requirements of UL Standard 248-12 for Class RK1 fuses.
LPS-RK-⁄Ω¡ºSP
LPS-RK-¤Ω¡ºSP
LPS-RK-‹Ω¡ºSP
LPS-RK-›Ω¡ºSP
LPS-RK-⁄Ω™SP
LPS-RK-flꭧSP
LPS-RK-°Ω¡ºSP
LPS-RK-1SP
LPS-RK-1⁄Ω•SP
LPS-RK-1⁄Ω¢SP
LPS-RK-1›Ω¡ºSP
LPS-RK-1⁄Ω™SP
LPS-RK-1flꭧSP
LPS-RK-1°Ω¡ºSP
LPS-RK-2⁄Ω¢SP
LPS-RK-2⁄Ω™SP
LPS-RK-2°Ω¡ºSP
LPS-RK-3SP
LPS-RK-3¤Ω¡ºSP
LPS-RK-3⁄Ω™SP
LPS-RK-4SP
LPS-RK-4⁄Ω™SP
LPS-RK-5SP
LPS-RK-5flꭧSP
LPS-RK-6SP
LPS-RK-6⁄Ω¢SP
LPS-RK-7SP
LPS-RK-8SP
LPS-RK-9SP
LPS-RK-10SP
LPS-RK-12SP
LPS-RK-15SP
LPS-RK-17⁄Ω™SP
LPS-RK-20SP
LPS-RK-25SP
LPS-RK-30SP
LPS-RK-35SP
LPS-RK-40SP
LPS-RK-45SP
LPS-RK-50SP
LPS-RK-60SP
—
—
—
100,000
10,000
60
30
Carton Quantity and Weight
Ampere
Ratings
0–30
35–60
*Weight per carton.
CE logo denotes compliance with European Union Low Voltage Directive
(50-1000 VAC, 75-1500 VDC). Refer to BIF document #8002 or contact
Bussmann Application Engineering at 636-527-1270 for more information.
Carton
Qty.
10
10
Weight*
Lbs.
1.6
2.6
Kg.
0.725
1.178
A
10,000
100,000
RMS SYMMETRICAL CURRENTS IN AMPERES
A–B=ASYMMETRICAL AVAILABLE PEAK
(2.3 x SYMM RMS AMPS)
12-1-99
A99074
Rev. A
Form No. LPS-RK 0-60
Page 1 of 2
BIF Doc #1001
200,000
1,000
1,000
AMPERE
RATING
Catalog Symbol and Amperes
INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS
Catalog Symbol:
LPS-RK_SP
Dual-Element, Time-Delay – 10 seconds (minimum) at 500%
rated current
Current-Limiting
Ampere Rating:
⁄Ω¡º
to 60 Amperes
Voltage Rating:
600 Volts AC (or less)
Interrupting Rating:
AC: 300,000A RMS Sym.
DC: 50,000 Amperes
Agency Approvals:
UL Listed, Special Purpose**, Guide JFHR, File E56412
CSA Certified, (200,000AIR), Class RK1 per CSA C22.2,
No. 248.12, Class 1422-02, File 53787
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.
• 300 Vdc, U.L. Listed.
Applications:
• Branch distribution
• Motors
• Transformers
• Solenoids
• General purpose circuits
Current-Limitation Curve
400,000
B
Bussmann
®
LOW-PEAK
®
Dual-Element, Time-Delay Fuses
Class RK1 – 600 Volt
Time-Current Characteristic Curves–Average Melt
1.25
LPS-RK
0-60 Amps
300
AMPERE RATING
AMPERE
RATING
20A
30A
300
.2
.3
.4
.6
.8
1
1.6
2
3.2
4
5
8
10
12
.1
6.25
.15
.5
2.5
100
100
10
TIME IN SECONDS
10
1
.1
TIME IN SECONDS
1
.1
100
1
RMS SYMMETRICAL CURRENT IN AMPERES
1,000
10
.01
.1
Fuseblocks:
30 Amp Case
1 Pole
Box Lug
Screw
Pressure Plate
60 Amp Case
1 Pole
Box Lug
Screw
Pressure Plate
R60060-1CR
R60060-1SR
R60060-1PR
2 Pole
R60060-2CR
R60060-2SR
R60060-2PR
3 Pole
R60060-3CR
R60060-3SR
R60060-3PR
R60030-1CR
R60030-1SR
R60030-1PR
2 Pole
R60030-2CR
R60030-2SR
R60030-2PR
3 Pole
R60030-3CR
R60030-3SR
R60030-3PR
.01
10,000
20,000
1,000
100
30
RMS SYMMETRICAL CURRENT IN AMPERES
The only controlled copy of this BIF document 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 information 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.
60A
12-1-99
A99074
Rev. A
Form No.LPS-RK 0-60
Page 2 of 2
BIF Doc #1001
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