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Mersen

Mersen AJT450EI 450A 600V Class J Time-Delay Fuse

Part Number: AJT450EI

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AJT450EI extends the Mersen AJT Series lineup with a 450A rating. The datasheet specifies 600V AC / 500V DC and 200kA AC / 100kA DC interrupting capability. This makes it suitable where high current limitation with time-delay performance for motor and transformer inrush. This catalog code identifies the EI visual/open-fuse indication configuration.

Rated Current450A
Rated Voltage600V AC / 500V DC
Breaking Capacity200kA AC / 100kA DC
PackageClass J

At 450A, AJT450EI is one of the rated options available in Mersen’s AJT Series. Selection data centers on a 600V AC / 500V DC voltage rating and 200kA AC / 100kA DC interrupting rating. The protection profile emphasizes high current limitation with time-delay performance for motor and transformer inrush. The Class J format uses ferrule / blade (amp-dependent) terminals with cartridge/clip mounting. Typical selection contexts include Branch Circuits, Transformers, Control Panels. This SKU is the EI visual/open-fuse indication configuration. Use the official Mersen datasheet to confirm final coordination and dimensions.

Technical Specifications

Part Number
AJT450EI
Manufacturer Part Number
AJT450EI
Series
AJT Series
Fuse Type
Current-Limiting Time-Delay Class J Fuse
Current Rating
450A
Voltage Rating
600V AC / 500V DC
AC / DC
AC/DC
Breaking Capacity
200kA AC / 100kA DC
Package / Dimensions
Class J
Mounting
Cartridge / Clip
Application
Branch Circuit Protection · Control panels · Feeder circuits · Motor Circuits · Switchboard Mains · Transformers
Standard
CSA C22.2 No. 248.8 · IEC 60269-1/-2 · UL 248-8
Terminal Type
Ferrule / Blade (amp-dependent)
Fuse Speed
Time Delay
Utilization Class
Class J
Approvals
CSA · UL Listed
Certifications
UL Listed · CSA

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