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Cylindrical fiberglass fuse, 1-1/4 inch by 1/4 inch, silver end caps

Bussmann

Bussmann FWH-005A6F Semiconductor Fuse 5A 500V AC Fast-Acting line protection

SKU CH-JXDK-9CYGB

Protects semiconductors with a 5 A, 500 V AC fast-acting fuse rated for 50 kA interrupt capacity

  • Protects sensitive semiconductors with fast-acting 5 A response
  • Handles 500 V AC and 500 V DC for versatile line protection
  • 50 kA interrupt rating at 500 V AC clears heavy faults safely
  • UL Recognized, CSA Certified and CE marked for code compliance
  • Compact 1 1/4 in cylindrical body fits standard fuse blocks

Fast-acting semiconductor fuse

The Bussmann FWH-005A6F is a 5 A semiconductor fuse rated for 500 V AC and 500 V DC. It provides fast-acting protection for sensitive electronic components and power circuits. The cylindrical, non-indicating design suits industrial and automotive electrical systems. It carries CE, CSA and UL recognition.

Fits standard 1BS fuse blocks

The fuse body measures 1-1/4 in length by 1/4 in diameter and uses a non-rejection mounting style. It installs directly into compatible 1BS series fuse blocks without special hardware. The single-element construction interrupts fault currents up to 50 kA at 500 V AC and 600 V DC. This clears dangerous overcurrents before they damage downstream semiconductors.

Cross-referenced for easy sourcing

Equivalent series include A50QS, A50P, FWH and L50S from Bussmann, Littelfuse and Mersen. This interchangeability lets maintenance teams replace the fuse with locally available stock. The fiberglass body and fast-acting characteristic are preserved across the listed equivalents. No additional accessories or software are bundled with the fuse.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 79% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

What is the interrupt rating that limits fault current on the FWH-005A6F?

The fuse interrupts up to 50kA at 500V AC and 50kA at 600V DC, so the circuit is cleared before sustained fault energy can build up.

How much heat does the 5A element dissipate during continuous all-day operation?

A 5A fast-acting fuse runs near its rated current with minimal temperature rise, keeping heat output low inside a 1-1/4 in x 1/4 in fiberglass body.

Which fuse blocks accept the 1-1/4 in x 1/4 in cylindrical body of this FWH series fuse?

The fuse fits the compatible 1BS series fuse blocks designed for the same cylindrical dimensions.

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