Eaton Bussmann 120FEE High Speed British Standard Fuse, 120A 690V, Class aR Offset Bolted Tags - Pack of 5

The Eaton Bussmann 120FEE is a premium high-speed British Standard (BS88) fuse designed specifically for the protection of power semiconductors. Utilizing an advanced dual-barrel construction, this fuse offers superior electrical performance and thermal stability. It is optimized for applications requiring high cycling capability and low energy let-through (I²t), making it an essential component for safeguarding sensitive power electronic equipment.

Key Features

• High-Speed Semiconductor Protection: Classified under utilization category aR, providing rapid interruption of overcurrents to protect diodes, thyristors, and other semiconductor devices.
• Exceptional Interrupt Rating: Features a robust breaking capacity of 200 kA RMS Symmetrical at 690 VAC and 50 kA at 500 VDC, ensuring safety in high-fault current environments.
• Optimized Energy Management: Low I²t clearing values (3100 at 660V) and a low wattage loss of 32W contribute to energy efficiency and reduced heat generation within enclosures.
• Industrial Standard Construction: Designed with offset dual-barrel bolted tags (FEE size) with M8 mounting dimensions and a 71 mm center-to-center distance for secure industrial installation.
• Certified Reliability: Fully compliant with IEC 60269-4 and BS88 part 4 standards. The series is UL Recognized and CE marked, meeting global safety and regulatory requirements.

Technical Specifications

• Manufacturer: Eaton Bussmann
• Catalog Number: 120FEE
• Amperage Rating: 120A
• Voltage Ratings: 690 VAC / 500 VDC (IEC); 700 VAC / 500 VDC (UL)
• Utilization Category: aR
• Breaking Capacity: 200 kA (AC) / 50 kA (DC)
• Pre-arc I²t: 540
• Total Clearing I²t: 3100 (at 660V)
• Mounting: Stud / Offset Bolted Tags (M8)
• Dimensions: 94 mm (Length) x 36 mm (Height) x 20 mm (Width)
• Applications: Power converters, rectifiers, DC drives, and DC common bus systems.
• Package Quantity: 5 Pieces