
Documentation & Downloads

Mersen AJT100 Fuse Amp-Trap 2000® 600V 100A Class J Time-Delay with SmartSpot Indicator
- MPN: AJT100
- UPC: 782001962487
- PPN: FER-AJT100
CAD
$50.31
/ EA
Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST
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Description
Features
- The AJT100 is a premium 100-Amp, 600V Class J fuse that offers industry-leading protection in a space-saving footprint. Its unique physical dimensions prevent the accidental installation of lower-rated Class RK fuses, ensuring your high-capacity motor starters and industrial feeders are always protected by a high-performance, current-limiting device.
- Engineered with advanced time-delay properties, the AJT100 is designed to "ride through" the massive initial inrush currents of large motors and transformers. It provides a minimum of 10 seconds of delay at 500% of its rating, effectively eliminating nuisance tripping during equipment startup while maintaining instantaneous protection against catastrophic short circuits.
- The AJT100 is one of the most current-limiting fuses available, reacting in less than 1/4 of a cycle during a fault. By drastically reducing the peak "let-through" energy ($I^2t$), it significantly lowers the risk of Arc Flash hazards and shields downstream equipment like Variable Frequency Drives (VFDs) from permanent thermal damage.
- With a massive 200,000 Amp RMS interrupting rating, this fuse is suitable for use in locations with extremely high available fault current. It allows you to achieve a high Short Circuit Current Rating (SCCR) for your entire control panel, meeting the most stringent industrial safety codes and inspection requirements.
- Constructed with a high-strength fiberglass body, the AJT100 remains dimensionally stable in high-heat industrial environments. This model features Mersen’s SmartSpot visual indicator, allowing maintenance teams to identify a blown fuse at a glance without the need for manual meter testing, which dramatically reduces troubleshooting time.
Documentation & Downloads
Specifications
Additional
- Voltage
- 600 V AC, 400 V DC
- Interrupting Rating
- 200 kA AC
- Fuse Class
- Class J
- Current Limiting
- Extremely current-limiting
- Connection/Terminal Material
- Tin-Plated Copper
- Body/Insulating Material
- GMG (Fiberglass body, high-grade silica filler)
- Length
- 4.63 in
- ROHS Compliant
- Yes
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CAD
$50.31
/ EA
Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST
Company Stock:
0
Looking to buy a large quantity?
To view product inventory
CAD$50.31/ EA
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