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Mersen

Mersen A4BQ350 350A 600V Class L Time-Delay Fuse

Part Number: A4BQ350

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Part A4BQ350 covers the 350A rating point in Mersen’s A4BQ Series. The datasheet specifies 600V AC / 500V DC and 200kA AC / 100kA DC interrupting capability. The series is intended for applications needing 4-second time delay at 500% rating and very high current limitation.

Rated Current350A
Rated Voltage600V AC / 500V DC
Breaking Capacity200kA AC / 100kA DC
PackageClass L

A4BQ350 is Mersen’s 350A catalog option in the A4BQ Series. Selection data centers on a 600V AC / 500V DC voltage rating and 200kA AC / 100kA DC interrupting rating. A key selection characteristic is 4-second time delay at 500% rating and very high current limitation. The Class L format uses blade terminals with cartridge/clip mounting. Typical selection contexts include Lighting & Heating, Circuit Breaker Backup, UPS DC Links. Check the official Mersen datasheet before final equipment coordination.

Technical Specifications

Part Number
A4BQ350
Manufacturer Part Number
A4BQ350
Series
A4BQ Series
Fuse Type
Current-Limiting Time-Delay Class L Fuse
Current Rating
350A
Voltage Rating
600V AC / 500V DC
AC / DC
AC/DC
Breaking Capacity
200kA AC / 100kA DC
Package / Dimensions
Class L
Mounting
Cartridge / Clip
Application
Circuit Breaker Protection · Feeder circuits · Large Motor Branch Circuits · Lighting & Heating · Switchboard Mains · UPS DC Links
Standard
CSA C22.2 No. 248.10 · UL 248-10
Terminal Type
Blade
Fuse Speed
Time Delay
Utilization Class
Class L
Approvals
UL Listed
Certifications
UL Listed

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