Skip to main content

A4BT / Class L / 10-Second Time Delay

The A4BT / Class L / 10-Second Time Delay is part of the Mersen (formerly Ferraz Shawmut) general purpose fuses line, distributed by Gross Automation.

A4BT / Class L / 10-Second Time Delay

When your heavier loads need protection, Ferraz A4BT fuses won't let you down - The high interrupting rating of A4BT current limiting fuses is ideally suited for protecting mains, feeders, and general circuits. The 10-second time delay at 500% of fuse rating is ideal for large motors and other loads with a high inrush. A4BT fuses are suitable for DC applications up to 500VDC. An A4BT fuse can be applied to normal loads up to its full ampere rating to allow 100% rating of equipment.

Specifications

SpecificationValue
RatingsAC: 600VAC, 200kA I.R.; AC: 500VDC, 100kA I.R. (Ferraz Shawmut Certified); UL Listed to Standard 248-10; CSA Certified to Standard C22.2 No. 248.10; DC Tested to UL 198L limits (Ferraz Shawmut Certified); Some ratings RoHS Compliant; Motors; Motor Controllers; Transformers; Mains; Feeders
FeaturesUnique dimensions prevent replacement by other fuse classes.; Blade-stamped catalog numbers for permanent identification; Glass melamine body and plated terminals provide superior reliability in harsh environments; Current-limiting; Full 10-second time delay; DC ratings; Uniform characteristics in all ampere ratings

Features

  • Unique dimensions prevent replacement by other fuse classes.
  • Blade-stamped catalog numbers for permanent identification
  • Glass melamine body and plated terminals provide superior reliability in harsh environments
  • Current-limiting
  • Full 10-second time delay
  • DC ratings
  • Uniform characteristics in all ampere ratings

Ratings

  • AC: 600VAC, 200kA I.R.
  • AC: 500VDC, 100kA I.R. (Ferraz Shawmut Certified)
  • UL Listed to Standard 248-10
  • CSA Certified to Standard C22.2 No. 248.10
  • DC Tested to UL 198L limits (Ferraz Shawmut Certified)
  • Some ratings RoHS Compliant
  • Motors
  • Motor Controllers
  • Transformers
  • Mains
  • Feeders

Catalog Numbers

Catalog NumberColumn 2Column 3Column 4Column 5Column 6Column 7Column 8
200A4BT200500A4BT500800A4BT8001500A4BT1500
250A4BT250600A4BT600900A4BT9001600A4BT1600
300A4BT300601A4BT6011000A4BT10001800A4BT1800
350A4BT350650A4BT6501100A4BT11002000A4BT2000
400A4BT400700A4BT7001200A4BT1200
450A4BT450750A4BT7501400A4BT1400

Documentation