Fuses

Fuses are among the simplest and most reliable protective devices in any electrical installation: when the current exceeds their rated value, they blow and cut the circuit before cables, equipment or fixtures are damaged. At GreenIce we bring together the installation materials you need to make your LED lighting projects safe and long-lasting.

Most common types of fuses

There are different fuse formats depending on the type of installation and the current they need to protect:

  • Diazed fuses (DII, DIII): screw-in fuses with a ceramic cartridge, widely used in distribution boards and service entrances. They fit into their fuse base and are easy to replace.
  • Cylindrical fuses: cartridges in various sizes (for example 10x38 mm) that fit into isolating fuse holders, common in industrial panels and line protection.
  • Blade fuses (NH): designed for high currents in industrial and commercial installations.
  • Glass or miniature fuses: found in electronic equipment, power supplies and some drivers.

Where are they used?

Fuses protect lines and equipment in many situations:

  • Main and sub-distribution boards in homes, shops and warehouses.
  • Supply lines for outdoor lighting and LED street lighting.
  • Protecting power supplies, transformers and drivers in LED strip installations.
  • Solar PV installations, where they protect strings and equipment against overcurrents.

How to choose a fuse

Rated current (A)

It must match the cable cross-section and the load being protected. An oversized fuse doesn't protect; one that's too small will blow during normal operation.

Rated voltage

Check that the fuse is rated for your installation's voltage (for example 230/400 V AC or the DC voltage of a solar system).

Operating class

General-purpose fuses (gG) protect lines against overloads and short circuits; motor-rated fuses (aM) tolerate inrush currents. Choose according to the type of load.

Format and base

The fuse must fit the base or fuse holder you already have installed. Check the size and mounting system before buying.

Frequently asked questions

What's the difference between a fuse and a circuit breaker?

Both protect against overcurrents, but a fuse blows and has to be replaced, while a circuit breaker can be reset. Fuses are still widely used for their reliability and high breaking capacity.

Can I replace a fuse with a higher-amp one?

It's not recommended: the fuse is sized to protect the cable. If it blows frequently, have the installation checked by a professional.

Complete your installation with our installation materials and LED components and our switches and dimmers. At GreenIce you get fast shipping and technical advice to choose the right protection.

Know more

Similar categories

Fuses

Fuses are among the simplest and most reliable protective devices in any electrical installation: when the current exceeds their rated value, they blow and cut the circuit before cables, equipment or fixtures are damaged. At GreenIce we bring together the installation materials you need to make your LED lighting projects safe and long-lasting.

Most common types of fuses

There are different fuse formats depending on the type of installation and the current they need to protect:

  • Diazed fuses (DII, DIII): screw-in fuses with a ceramic cartridge, widely used in distribution boards and service entrances. They fit into their fuse base and are easy to replace.
  • Cylindrical fuses: cartridges in various sizes (for example 10x38 mm) that fit into isolating fuse holders, common in industrial panels and line protection.
  • Blade fuses (NH): designed for high currents in industrial and commercial installations.
  • Glass or miniature fuses: found in electronic equipment, power supplies and some drivers.

Where are they used?

Fuses protect lines and equipment in many situations:

  • Main and sub-distribution boards in homes, shops and warehouses.
  • Supply lines for outdoor lighting and LED street lighting.
  • Protecting power supplies, transformers and drivers in LED strip installations.
  • Solar PV installations, where they protect strings and equipment against overcurrents.

How to choose a fuse

Rated current (A)

It must match the cable cross-section and the load being protected. An oversized fuse doesn't protect; one that's too small will blow during normal operation.

Rated voltage

Check that the fuse is rated for your installation's voltage (for example 230/400 V AC or the DC voltage of a solar system).

Operating class

General-purpose fuses (gG) protect lines against overloads and short circuits; motor-rated fuses (aM) tolerate inrush currents. Choose according to the type of load.

Format and base

The fuse must fit the base or fuse holder you already have installed. Check the size and mounting system before buying.

Frequently asked questions

What's the difference between a fuse and a circuit breaker?

Both protect against overcurrents, but a fuse blows and has to be replaced, while a circuit breaker can be reset. Fuses are still widely used for their reliability and high breaking capacity.

Can I replace a fuse with a higher-amp one?

It's not recommended: the fuse is sized to protect the cable. If it blows frequently, have the installation checked by a professional.

Complete your installation with our installation materials and LED components and our switches and dimmers. At GreenIce you get fast shipping and technical advice to choose the right protection.