Littelfuse FLNR-225 - Class RK1 Fuse 250V AC/225A (200kA Interrupt Rating)

Littelfuse FLNR-225 is a low-voltage current-limiting fuse designed for overcurrent protection in industrial electrical systems. It features a 250V AC rating with a 225A current capacity, housed in a durable ceramic body with tin-plated copper end caps for reliable conductivity. The fuse meets UL 248-12 and CSA standards for branch circuit protection, ensuring compliance with North American safety requirements. Its fast-acting characteristics make it ideal for protecting motor circuits, transformers, and feeder lines in commercial and industrial power distribution systems.

Key Features & Specifications

• Type: Class RK1 current-limiting fuse with ceramic body construction
• Voltage Rating: 250V AC
• Current Rating: 225A
• Dimensions: 10.3mm diameter x 38.1mm length
• Standards: UL 248-12, CSA certified
• Applications: Motor protection, transformer circuits, industrial power distribution
• Interrupt Rating: 200kA
• Mounting: DIN-style clip mounting
• Operating Temperature: -50°C to +125°C
• Material: Ceramic tube with tin-plated copper terminals
• Fuse Class: RK1
• Time-Current Characteristic: Fast-acting