Bussmann
®
LOW-PEAK
®
LPJ_SPI
6-60 Amps
General Information:
• Permanent fuse Indication.
• True dual-element fuses with a minimum 10 second time-
delay at 500% overload.
• Long time-delay minimizes needless fuse openings due to
temporary overloads and transient surges.
• Can often be sized for back-up protection against motor
burnout from overload or single-phasing if other overload
protective devices fail.
• High interrupting rating to safely interrupt overcurrents up to
300,000A.
• High degree of current limitation due to the fast speed-of-
response to short-circuits.
• Faster response to damaging short-circuit currents than
mechanical overcurrent protective devices.
• Reduces let-through thermal and magnetic forces in order
to protect low withstand rated components.
• Proper sizing provides “no damage” Type “2” coordinated
protection for NEMA and IEC motor control in accordance
with IEC Standard 947-4-1.
• Dual-element fuses have lower resistance than ordinary fuses
so they run cooler.
• Lower watts loss reduces power consumption.
• Unique dimensions assure that another class of fuse with
a lesser voltage rating, interrupting rating or current-Iimiting
ability cannot be substituted.
• Space-saving package for equipment down sizing.
Dual-Element Time-Delay Fuses
Class J – 600 Volt
Dimensional Data
2.25"
(± 0.03)
.81"
.5" (± 0.03)
1A to 30A
2.38"
(± 0.03)
.63"
35A to 60A
1.06"
(± 0.03)
Catalog Symbol:
LPJ_SPI
Dual-Element, Time-Delay – 10 seconds (minimum) at 500%
rated current
Current-Limiting
Ampere Rating:
6 to 60A
Voltage Rating:
600Vac (or less)
300Vdc (or less): 35-60A
Interrupting Rating:
300,000A RMS Sym. (UL)
100,000A dc
Agency Information:
UL Listed — Special Purpose*, Guide JFHR, File E56412
CSA Certified, 200,000 AIR, Class J per CSA 22.2 No. 248.8
Class 1422-02, File 53787
*Meets all performance requirements of UL Standard 248-8 for Class J fuses.
Catalog Symbol and Ampere Ratings
LPJ-6SPI
LPJ-7SPI
LPJ-8SPI
LPJ-9SPI
LPJ-10SPI
LPJ-12SPI
LPJ-15SPI
LPJ-17⁄Ω™SPI
LPJ-20SPI
LPJ-25SPI
LPJ-30SPI
LPJ-35SPI
LPJ-40SPI
LPJ-45SPI
LPJ-50SPI
LPJ-60SPI
Recommended fuseblocks/fuseholders for
Class J 600V fuses
See Data Sheets listed below
• Finger-safe fuseholders - 1152
• Open fuseblocks - 1114
• Open pyramid fuseblocks - 1108
Carton Quantity and Weight
Ampere
Ratings
6–30
35–60
**Weight per carton.
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.
Carton
Qty.
10
10
Weight**
Lbs.
1.09
1.78
Kg.
0.494
0.808
For non-indicating version, the LPJ_SP
is available. See Data Sheet: 1006
8-26-04
SB04295
Form No. LPJ_SPI 6-60
Page 1 of 3
Data Sheet: 1062
Bussmann
®
LOW-PEAK
®
Dual-Element Time-Delay Fuses
Class J – 600 Volt
Current Limitation Curves
LPJ_SPI
6-60 Amps
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 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.
8-26-04
SB04295
Form No. LPJ_SPI 6-60
Page 3 of 3
Data Sheet: 1062
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