AJT90 – Mersen | CLASS J TD 600V 90A

Description

The Mersen AJT90 is a high-performance Class J time-delay fuse designed to protect electrical circuits by handling inrush currents and providing superior current-limiting capabilities. Its compact design ensures space efficiency while delivering reliable circuit protection.

Key Features

• SmartSpot Indicator: Features a SmartSpot visual indicator for quick identification of a blown fuse, aiding in easy maintenance and troubleshooting.
• Time-Delay Function: Time-delay characteristics make it suitable for managing motor and transformer inrush currents, reducing the likelihood of unnecessary outages.
• High Interrupting Rating: With a 300kA interrupting rating, it ensures robust protection against short circuits, tested under UL witnessed conditions.
• Current-Limiting: Provides excellent current-limiting performance to minimize peak let-thru currents, protecting sensitive equipment.
• Arc Flash Energy Reduction: Recommended for reducing arc flash energy, enhancing safety in electrical systems.
• Compact Size: Requires only half the mounting space compared to 600VAC Class RK fuses, facilitating the use of smaller, more cost-effective fuse blocks.
• Selectivity: Designed for easy 2-to-1 selectivity to prevent nuisance shutdowns and ensure reliable operation.
• Unique Dimensions: Class J dimensions prevent incorrect replacements, ensuring proper fit and function.
• High-Visibility Label: Features a bright orange label for immediate brand recognition and easy identification.
• Durable Construction: Made with a fiberglass body and high-grade silica filler for durability and effective arc quenching.
• Traceability: Includes metal-embossed date and catalog number for traceability and long-term identification.
• Optional Indicator/Switch: Available with an optional EI indicator/switch mount for improved fuse status indication (for AJT70 to 600).

Specifications

• Manufacturer Part Number: AJT90
• Voltage Rating (AC): 600 V
• Ampere Rating: 90 A
• Fuse Class: Class J
• Body Material: Fiberglass with high-grade silica filler
• Standards Approvals:
  • UL listed to standard 248-8 File E2137
  • DC listed to UL standard 248
  • CSA certified to standard C22.2 No. 248.8
  • IEC 60269-2-1
• Applications:
  • Motor circuits
  • Mains
  • Feeders
  • Branch circuits
  • Lighting, heating, and general loads
  • Transformers
  • Control panels
  • Circuit breaker back-up
  • Bus duct
  • Load centers

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