Which devices are compatible with the Fluke 943121 fuse?

This fuse is designed as a replacement fuse for various Fluke multimeters, including models 87V, 175, 177, 179, and 289.

What are the main electrical ratings of this fuse?

It features a rated current of 440mA (0.44A), a maximum voltage rating of 1000V, and an interrupting rating of 10kA.

What is the blow characteristic of this fuse?

This is a fast-acting fuse (Fast / F) engineered to interrupt the circuit immediately in the event of an overload or short circuit.

What are the physical dimensions of this fuse?

The dimensions are 10.3 x 34.9 mm (also specified as 10 x 35 mm).

Can you replace this with a standard electronic fuse?

No, always use the specified 1000V and 10kA high-energy fuse to ensure meter protection and personal safety during measurements.

FLUKE 943121 fuse 440mA (F)/1000V/10kA 10.3x34.9mm

Name: FLUKE 943121 fuse 440mA (F)/1000V/10kA 10.3x34.9mm
Brand: FLUKE
SKU: 02957307
Price: 10.03 EUR
Availability: PreOrder

Supplier number: FLUKE 943121 | EAN 0095969089906

10.03 tax incl.

€8.29 excl. VAT (incl. all environmental contributions)

On order: delivered from 07/10/2026

Ordered before 20:00 - delivered as of 07/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

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Dependable protection for your Fluke multimeter

Practical benefits

Fast and decisive interruption: The fast-acting design cuts off current overloads rapidly to protect internal meter circuits from serious damage.
High voltage handling capability: Rated for 1000V and an interrupting capacity of 10kA, it ensures user safety during heavy electrical measurements.
Standardized replacement fuse fit: Sized at 10,3X34,9MM, this 440MA fuse installs smoothly into compatible digital multimeters.

In a nutshell

The right choise for

Restore the accurate current measurement capabilities of your digital multimeter with the Fluke 943121 fuse. Engineered with a fast-acting blow characteristic, this 440MA replacement fuse rapidly interrupts overcurrent situations to safeguard sensitive internal circuitry. With a 1000V rating and a 10kA interrupting capacity, it provides essential protection against high-energy surges during demanding electrical diagnostics and maintenance tasks. Sized at 10.3x34.9 mm, it fits seamlessly into compatible Fluke multimeters such as the 87V, 175, 177, 179, and 289. Keep your test equipment performing safely and reliably on every job site.

Product information FAQ

€10.03

tax incl.

Key features according to our expert

Current: 440 mA
Fuse type: Glass fuse
Voltage: 1000 V

All Features

Current: 440 mA
Fuse type: Glass fuse
Voltage: 1000 V

Brand FLUKE
02957307
EAN 0095969089906
Supplier number FLUKE 943121

Frequently asked questions about this product

Answered by specialists

Which devices are compatible with the Fluke 943121 fuse?: This fuse is designed as a replacement fuse for various Fluke multimeters, including models 87V, 175, 177, 179, and 289.
What are the main electrical ratings of this fuse?: It features a rated current of 440mA (0.44A), a maximum voltage rating of 1000V, and an interrupting rating of 10kA.
What is the blow characteristic of this fuse?: This is a fast-acting fuse (Fast / F) engineered to interrupt the circuit immediately in the event of an overload or short circuit.
What are the physical dimensions of this fuse?: The dimensions are 10.3 x 34.9 mm (also specified as 10 x 35 mm).
Can you replace this with a standard electronic fuse?: No, always use the specified 1000V and 10kA high-energy fuse to ensure meter protection and personal safety during measurements.