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Mersen

Mersen A2D400R 400A Class RK1 Time-Delay Fuse

Part Number: A2D400R

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Use the exact manufacturer reference for Mersen A2D400R, a 400A class rk1 time-delay fuse rated 250 VAC / 250 VDC, with the current rating, system voltage and physical connection before substitution.

Rated Current400A
Rated Voltage250 VAC / 250 VDC
Breaking Capacity200 kA AC / 100 kA DC

For engineers matching protection to operating conditions, the device pairs the series protection profile with a practical installation format. Mersen A2D400R is a 400A class rk1 time-delay fuse in the A2D family, rated 250 VAC / 250 VDC. Use the exact part number when checking compatibility with installed fuse blocks or holders. Its blade configuration supports motor, transformer, power distribution. FuseStock lists the manufacturer reference for sourcing and technical comparison.

Technical Specifications

Part Number
A2D400R
Manufacturer Part Number
A2D400R
Series
A2D Series
Fuse Type
Current-Limiting Fuse
Current Rating
400A
Voltage Rating
250 VAC / 250 VDC
AC / DC
AC/DC
Breaking Capacity
200 kA AC / 100 kA DC
Mounting
Blade
Application
Motor · Power distribution · Transformer
Standard
CSA C22.2 · UL 248
Terminal Type
Blade
Fuse Speed
Time Delay
Utilization Class
Class RK1
Approvals
CSA · UL Listed
Certifications
UL Listed|CSA Certified

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