Description
The Bussmann LPJ-70SP is a 70-ampere, 600-volt Class J Low-Peak® dual-element, time-delay fuse engineered to provide superior overcurrent and short-circuit protection for HVAC equipment, motors, transformers, and industrial control panels. Its dual-element design distinguishes between harmless temporary overloads — such as motor inrush currents — and genuine fault conditions, minimizing nuisance tripping while ensuring fast, reliable response to damaging short circuits.
Key Features
- Ampere Rating: 70A
- Voltage Rating: 600V AC
- Fuse Class: Class J (compact, rejection-style blade)
- Dual-element, time-delay construction tolerates motor starting inrush without nuisance opening
- Low-Peak® design allows downsizing of fuse ampere ratings for improved system coordination
- Current-limiting action reduces let-through energy to protect downstream components
- Rejection-style Class J form factor prevents accidental substitution with lower-rated fuses
- Compatible with Class J fuse holders and fusible disconnects rated 600V
Typical Applications
- HVAC compressor and motor branch-circuit protection
- Commercial and industrial motor control centers (MCCs)
- Fusible disconnect switches and panelboards
- Transformer primary protection
- Control panel and electrical distribution equipment
Why Choose the Bussmann LPJ Series?
The LPJ series Low-Peak® fuses are a trusted standard in HVAC and industrial electrical protection. Their current-limiting capability significantly reduces arc-flash energy and equipment damage during fault events, helping facilities meet NFPA 70E arc-flash safety requirements. The time-delay feature allows equipment with high inrush currents — like air conditioning compressors and fan motors — to start reliably without blowing the fuse, while still providing fast clearing on true short circuits. The compact Class J footprint and rejection feature make the LPJ-70SP a safe, code-compliant choice for new installations and replacement applications alike.
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