Mersen

Mersen A4BQ400 400A 600V Class L Time-Delay Fuse

Name: Mersen A4BQ400 400A 600V Class L Time-Delay Fuse
Brand: Mersen
SKU: A4BQ400

Part Number: A4BQ400

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The A4BQ Series includes A4BQ400, rated at 400A. Core electrical data includes 600V AC / 500V DC operation and 200kA AC / 100kA DC interruption. The series is intended for applications needing 4-second time delay at 500% rating and very high current limitation.

Rated Current400A

Rated Voltage600V AC / 500V DC

Breaking Capacity200kA AC / 100kA DC

PackageClass L

Tags

A4BQ Series A4BQ400 class l Mersen time-delay

The Mersen A4BQ400 combines a 400A rating with the protection characteristics of the A4BQ Series. The circuit rating is 600V AC / 500V DC; published interrupting performance is 200kA AC / 100kA DC. 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 UPS DC Links, Mains, Feeders. Check the official Mersen datasheet before final equipment coordination.

Technical Specifications

Part Number: A4BQ400
Manufacturer Part Number: A4BQ400
Series: A4BQ Series
Fuse Type: Current-Limiting Time-Delay Class L Fuse
Current Rating: 400A
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