Eaton Bussmann LPJ-250SP Low-Peak Fuse, 250A 600V AC, Class J Dual-Element Time-Delay - Pack of 3

Low-Peak™ LPJ Series Class J Dual-Element Time-Delay Fuse - Eaton Bussmann Series

The Eaton Bussmann LPJ-250SP is an industrial-spec Class J current-limiting fuse, engineered to provide high-performance protection for power distribution systems and motor circuits. As part of the Low-Peak™ series, this dual-element fuse offers a minimum 10-second time-delay at 500% of the rated current. This thermal characteristic allows the fuse to withstand temporary surges and motor inrush currents, effectively preventing nuisance tripping and maintaining operational continuity.

Equipped with a 300kA interrupting rating at 600Vac, the LPJ-250SP provides one of the highest safety margins in the industry. Its current-limiting design restricts peak let-through current and thermal energy (I²t), shielding downstream equipment from the destructive forces of short-circuit events. The compact Class J physical profile requires significantly less mounting space compared to traditional fuses, making it the preferred choice for modern, high-density electrical panels.

Technical Specifications:

• Manufacturer: Eaton
• Brand: Bussmann series
• Catalog Number: LPJ-250SP
• Fuse Class: Class J
• Amperage Rating: 250 A
• Voltage Rating: 600 Vac, 300 Vdc
• Interrupting Rating: 300kA Vac RMS Sym., 100kA Vdc
• Time-Delay: 10 seconds (minimum) at 500% of rated current
• Certification: UL Listed (Class J), CSA Certified, CE, RoHS Compliant

Key Features:

• Enhanced Reliability: Dual-element construction provides superior protection for both overloads and short circuits.
• Low Let-Through Energy: Excellent current-limiting performance safeguards sensitive electrical components and motor starters.
• Standardized Coordination: Simplifies system design with a 2:1 coordination ratio with other Low-Peak fuses.
• Space-Saving Design: Class J dimensions allow for smaller, more cost-effective fuse blocks and disconnect switches.

Application: The LPJ-250SP is ideal for branch circuit protection, service entrance equipment, and industrial motor control centers. It is widely specified for the protection of motors, transformers, and industrial machinery where high interrupting capacity and time-delay characteristics are required.