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Mersen

Mersen AJT4 4A 600V Class J Time-Delay Fuse

Part Number: AJT4

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AJT4 is the 4A selection in Mersen’s AJT Series. 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.

Rated Current4A
Rated Voltage600V AC / 500V DC
Breaking Capacity200kA AC / 100kA DC
PackageClass J

Mersen AJT4 is a 4A Class J fuse from the 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 Mains, Feeders, Branch Circuits. Use the official Mersen datasheet to confirm final coordination and dimensions.

Technical Specifications

Part Number
AJT4
Manufacturer Part Number
AJT4
Series
AJT Series
Fuse Type
Current-Limiting Time-Delay Class J Fuse
Current Rating
4A
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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