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Green plastic cartridge fuse, rectangular body, metal end caps

Eaton Bussmann

Eaton Bussmann FLF-40 40A 32V DC Cartridge Fuse

SKU CH-3WQT-TX932

A fast-acting 40 A cartridge fuse rated for 32 V DC automotive circuits

  • TypeFuses & Accessories
  • 40 A fast-acting protection for 32 V DC systems
  • Single-element design interrupts up to 1 kA at 32 V DC
  • UL Recognised Guide JFHR2 file E56412 confirms safety compliance
  • Green colour code simplifies 40 A fuse identification
  • Cartridge body 1-1/4 in long fits standard fuse blocks

Eaton Bussmann FLF-40 40A Cartridge Fuse

This Eaton Bussmann FLF-40 is a fast-acting cartridge fuse rated for 40 amps at 32V DC. It uses a plastic body with a green colour code for easy identification. The fuse carries UL Recognized status under Guide JFHR2, File E56412. It suits automotive and low-voltage DC circuit protection.

Fits standard FLF cartridge holders in DC wiring

The fuse measures 1-1/4 in length by 1 in width by 3/4 in depth. Its non-rejection body style allows direct insertion into compatible fuse blocks without a keyed holder. The single-element construction clears faults quickly, protecting downstream wiring and components. An interrupt rating of 1kA at 32V DC handles short-circuit energy in automotive systems.

Ideal for technicians replacing a blown 40A FLF fuse

Buyers needing a different amperage, voltage rating, or indicating feature should select another part. The non-indicating design requires manual testing to confirm status after a fault. Shops stocking bulk quantities for fleet maintenance will find this single-element cartridge matches the original equipment specification.

Highlights

  • 40 A fast-acting protection for 32 V DC systems
  • Single-element design interrupts up to 1 kA at 32 V DC
  • UL Recognised Guide JFHR2 file E56412 confirms safety compliance
  • Green colour code simplifies 40 A fuse identification
  • Cartridge body 1-1/4 in long fits standard fuse blocks

Specifications

BrandEATON BUSSMANN
TypeFuses & Accessories

Questions about this item

How long will a 40 A cartridge fuse carry its rated current before it opens?

This FLF Series fuse is fast-acting, so it will clear a sustained overload quickly once the current exceeds 40 A.

Does the fuse body get hot or make noise during normal operation?

The plastic-bodied cartridge runs silently and produces only normal resistive warmth at rated load.

What fuse holder or block accepts the 1-1/4 in x 1 in x 3/4 in cartridge?

It fits standard FLF Series cartridge fuse blocks designed for the same physical dimensions.

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