Overview
Bussmann LPJ-5SP fuses are Eaton Bussmann series Class J time-delay, dual-element current-limiting fuses designed for branch circuit and motor-load protection in industrial and commercial electrical systems. The Low-Peakâ„¢ design combines separate overload and short-circuit protection elements, allowing selective coordination and reduced fuse inventory costs.
Key Features
- Dual-Element Construction: Separate overload and short-circuit elements provide time delay for sizing of high inrush loads linked with Class J current limitation
- Time-Delay Rating: 10 seconds (minimum) at 500% of rated current, ideal for motor starting transients
- High Interrupting Rating: 300 kA at 600 Vac and 100 kA at 300 Vdc for effective short-circuit protection
- Selective Coordination: 2-to-1 selective coordination ratio (within Low-Peak fuse family) prevents electrical shutdowns from extending beyond the failed circuit
- Current Limitation: Current-limitation protects downstream components against damaging thermal and magnetic effects of short-circuit currents
Technical Specifications
- Ampere Rating: 5A
- Voltage Rating: 600 Vac / 300 Vdc
- Interrupting Rating (IR): 300 kA @ 600 Vac RMS, 100 kA @ 300 Vdc
- Response Time: Time-Delay (T-Type Slow-Blow)
- Class: Class J per UL 248-8
- Construction Type: Dual-Element, Current-Limiting Cartridge
- UL File: JDDZ.E4273
- Certifications: UL 248-8 – Class J Fuses; CSA C22.2 No. 248.8 – Class J Fuses; CE; RoHS compliant
Typical Applications
- Branch circuit protection in industrial control systems
- Motor-load overcurrent protection with starting inrush tolerance
- Selective coordination in multi-stage electrical distribution
- Equipment protection in commercial and industrial facilities
- Backup protection for systems requiring current limitation
Compatibility & Replacements
Compatible With
- Class J fuse blocks and holders rated 600V
- Industrial electrical panels and switchgear
- Motor control centers (MCCs)
- General electrical distribution systems up to 600V
- Systems requiring Class J fuse coordination
Replaces / Drop-In Replacement For
- Cooper Bussmann LPJ-5SP
- Eaton LPJ-5SP
- Other 5A Class J time-delay fuses in compatible housings (verify mechanical fit)
Works With
- Class J fuse base and cartridge-style fuse holders
- UL 248-8 compliant electrical systems
- CSA 22.2 No. 248.8 certified installations
- Industrial control and power distribution applications
