We recommend the following procedure for checking fuses:


Open the distribution box

Open the distribution box, which is normally on the staircase, though it may be within the apartment. The distribution box contains apartment fuses. There are two types of fuses: group fuses (either circuit breakers or screw-plug thermal fuses) and the main fuse or main circuit breaker.


2. If your group fuses are thermal fuses, check if they are operational.

When a thermal fuse has blown so that you cannot see the metal end piece or control plug, it is broken. The picture shows an operational thermal fuse and a blown fuse.

If the fuse has blown, you can buy a new safety plug at an electrical appliances store, and if it blows again, there is a short circuit in your electricity system. In this case you should call an electrical company for a certified electrician to come and find the cause of the breakdown.


If group fuses are circuit breakers, make sure that they are switched on.

A group fuse can consist of a circuit breaker or, if you have multi-phase current, several interconnected circuit breakers. If the main fuse is switched off (the lever is in the OFF position), try switching it on first. If the circuit breaker is in an in-between position, first bring it to the OFF position and then try switching it on again. Positions may also be marked as I (on) and 0 (off). If the fuse switches off again, call for an electrician from an electrical company.

The image shows a single-phase and a three-phase circuit breaker.


If your group fuses are operational, check the main fuse.

The main fuse can be a thermal fuse or a circuit breaker. You can check the main fuse in exactly the same way as the group fuses. Check whether the thermal fuse is operational or whether the circuit breaker is switched on and then proceed in the same way as you would with group fuses.

Work on main fuses needs the seals to be removed, which must be ordered from Elektrilevi.


If the apartment group fuses and the main fuse are operational, contact the building manager or owner.

The manager or owner can check whether the group fuses and main fuse of the apartment building in the main distribution box of the building are working.

If the fuses have tripped or a fault can be seen at the supply point, the building manager needs to have repairs done by an electrical company. If they are sealed, the removal of the seals needs to be ordered from Elektrilevi. If the main distribution box of the building is working, there may well be a breakdown in the distribution network, so Elektrilevi needs to be contacted by calling 1343.