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LED Panels & Troffers
Class J Fuse - A4J250 - Fast-Acting - 250A - 600V
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A4J250 Fuse - Fast-Acting - Class J

600 Volt - 250 Amp - 200kA I.R. AC - Mersen


This Mersen A4J250 250-amp fast-acting fuse combines highly desirable functionality and size features to create a versatile fuse suitable for a variety of applications. This 600-volt class J fuse features Amp-Trap technology which minimizes 200kA of let-thru current that flows downstream, while its fiberglass body provides stability in rough environments. The fuse's unique dimensions prevent J class fuses from being replaced by incompatbile fuses. The Mersen A4J250 is ideal in applications ranging from loadcenters to feeder circuits.

UL Listed to Standard 248-8, File E2137 DC Listed to UL Standard 248 CSA Certified to Standard C22.2, No. 248.8 IEC 269-2-1

RoHS Compliant

Brochures & Spec Sheets


Stock Code:  FUSE-A4J250
Part No.:  A4J250
Voltage:  600
Length:  7.125 in.
Speed:  Fast Acting
RoHS:  Compliant
UL Class:  Class J
Case Quantity:  1
Brand:  Mersen
UPC:  78200196039
Amperage:  250 Amps
Diameter:  2.125 in.
CSA Listed:  C22.2
Interrupt Rating:  200kA
UL Listed:  UL 248-8


  • Panelboards
  • Switchboards
  • Bus duct
  • Feeder circuits
  • Circuit breakers
  • Lighting, heating, and general loads

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