Eaton Bussmann LPJ-225SP Low-Peak Fuse, 225A 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-225SP is a premium Class J current-limiting fuse designed to provide high-level circuit protection for industrial and commercial power systems. As part of the prestigious Low-Peak™ family, this dual-element fuse incorporates a minimum 10-second time-delay at 500% of the rated current. This allows the fuse to successfully navigate high-inrush currents associated with motor startups and transformer energization, significantly reducing downtime caused by unnecessary fuse blowing.

With an impressive 300kA interrupting rating at 600Vac, the LPJ-225SP ensures maximum safety during fault conditions. Its advanced current-limiting technology restricts peak let-through current and thermal energy (I²t), offering superior protection for downstream components such as NEMA and IEC motor starters. The standardized Class J dimensions offer a compact footprint, allowing for smaller, more efficient panel and equipment designs compared to other fuse classes.

Technical Specifications:

• Manufacturer: Eaton
• Brand: Bussmann series
• Catalog Number: LPJ-225SP
• Fuse Class: Class J
• Amperage Rating: 225 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
• Compliance: UL Listed (Class J), CSA Certified, CE, RoHS Compliant

Key Features:

• High-Speed Response: Provides rapid reaction to short-circuit currents while maintaining time-delay for transient overloads.
• Component Protection: Achieves Type 2 "No Damage" protection for motor controllers when properly sized.
• Efficiency: Features low internal resistance for cooler operating temperatures and reduced energy waste in high-density enclosures.
• System Coordination: Supports a 2:1 coordination ratio, simplifying the design of selective coordination systems to isolate faults.

Application: The LPJ-225SP is expertly suited for branch circuit protection, industrial control panels, and motor control centers. It is the preferred solution for protecting large motors, power transformers, and feeder circuits in manufacturing plants, data centers, and heavy industrial facilities where reliability and space-efficiency are paramount.