Overview
The Bussmann LPJ-60SP is an industrial-grade Class J low-peak dual-element time-delay fuse designed for motor protection and high-inrush current applications. These fuses provide fast short-circuit protection and dual-element, time-delay performance for ultimate protection. With a 60-amp current rating and 600VAC/300VDC voltage rating, this fuse combines current-limiting technology with selective coordination characteristics ideal for manufacturing, HVAC, and industrial electrical systems.
Key Features
- Dual-Element Design: Separate overload and short-circuit elements provide time-delay performance for high-inrush loads
- Industry-Leading Interrupting Rating: 300kA interrupting rating at 600VAC RMS and 100kA at 300VDC, ideal for sizing high-inrush loads
- Time-Delay Protection: Long time-delay minimizes needless fuse openings due to temporary overloads and transient surges
- Selective Coordination: Consistent 2:1 ampacity ratios for all Low-Peak fuses make selective coordination easy
- Current Limiting: Protects downstream components and reduces let-through current during faults
- Standard Compliance: Non-indicating and complies with CE and RoHS standards
Technical Specifications
- Current Rating: 60 Amps
- Voltage Rating: 600VAC / 300VDC
- Interrupt Rating (Symmetrical): 300 kA at 600VAC
- Interrupt Rating (DC): 100 kA at 300VDC
- Fuse Class: Class J
- Speed Type: Time Delay / Slow Blow
- Element Type: Dual-Element
- Body Material: Melamine with Copper Finish
- Body Style: Cylindrical Cartridge
- Dimensions: 1.06″ Dia × 2.38″ L (26.92 × 60.45mm)
- Terminal Type: Ferrule × Ferrule
- Response Time: 10 second response at 500% rated current
- Series: LPJ (Low-Peak)
- Certifications: CE, UL, CSA, RoHS
Typical Applications
The LPJ-60SP is designed for high inrush current motor protection and is widely used in:
- Three-phase motor circuits and motor control centers
- HVAC compressor and blower protection
- Industrial pump and fan circuits
- Commercial and industrial distribution panels
- Equipment with temporary startup surges or inrush transients
- Series-rated system combinations with branch circuit breakers
Compatibility & Replacements
Compatible With
- Class J fuse holders rated for 600V applications
- Any 60A 600V fuse cavity in commercial/industrial electrical systems
- Motor control centers (MCCs) with standard fuse slots
- Industrial control panels and disconnect switches
- Series-rated system breaker combinations
Replaces / Drop-In Replacement For
- Littelfuse JTD, Mersen AJT equivalent models
- Ferraz/Gould AJT 60A fuses
- Other Class J 60A time-delay cartridge fuses with matching dimensions
Works With
- UL Class J fuse holders and rejection-type mounting bases
- Standard 600VAC industrial electrical distribution systems
- DC circuits up to 300VDC
- Series-rated breaker/fuse combinations for selective coordination
- Motor soft-starters and variable frequency drives (VFDs)
