O centro de distribuição está fechado.

O is the masculine singular definite article, meaning the.

It is used because centro is a masculine singular noun: o centro.

In Portuguese, using the definite article is very normal in places where English might or might not use the. Here, O centro de distribuição sounds like a specific distribution centre that the speaker and listener already know about.

If you removed O, the phrase would usually sound less like a normal full sentence and more like a label, heading, or note.

This is a very common Portuguese structure:

noun + de + noun

So:

• centro = centre
• de distribuição = for distribution / of distribution

English often puts two nouns together, as in distribution center. Portuguese usually links them with de instead.

So centro de distribuição is the normal way to build this kind of expression.

Because de distribuição is being used in a general, classifying way.

It means something like:

• a centre for distribution
• a distribution centre

If you said da distribuição, that would mean of the distribution, referring to a specific distribution process or system already known in the conversation. That is not the usual meaning here.

So:

• centro de distribuição = distribution centre
• centro da distribuição = the centre of the distribution

Those are not the same thing.

Portuguese uses two verbs for to be: ser and estar.

Here, está is from estar, and it is used because fechado describes a state or condition: the centre is currently closed.

That is why está fechado is natural.

Compare:

• está fechado = it is closed, it is in a closed state
• é fechado = it is closed by nature / it is a closed-off type of place / it is closed in a more permanent or characteristic sense

For shops, offices, warehouses, and similar places, Portuguese normally uses estar for being open or closed:

• está aberto
• está fechado

Fechado is the past participle of the verb fechar, which means to close.

But in this sentence, fechado is functioning like an adjective, meaning closed.

So está fechado literally works like:

• is closed
• is in a closed state

This is very common in Portuguese. Many past participles can be used like adjectives.

Because fechado has to agree with centro, which is masculine singular.

Agreement in Portuguese matters a lot. Since centro is masculine singular, the adjective or participle describing it must also be masculine singular:

• o centro ... está fechado

If the noun changed, the ending would change too:

• a loja está fechada
• os centros estão fechados
• as lojas estão fechadas

So the ending of fechado is not random. It matches the noun it describes.

Yes. Centro de distribuição is a normal and standard term in Portuguese, including in Portugal.

It is the kind of expression you would expect in logistics, retail, transport, warehousing, and business contexts.

Depending on context, people might also use more specific terms, but centro de distribuição is perfectly natural and widely understood.

Because Portuguese usually does not need a subject pronoun when the subject is already stated or understood.

The subject here is explicitly present:

O centro de distribuição

So there is no need to add ele.

Portuguese often leaves pronouns out when they are unnecessary. This is much more common than in English.

Adding ele here would usually sound unnatural:

• natural: O centro de distribuição está fechado.
• unnatural in normal use: O centro de distribuição ele está fechado.

Usually, está fechado suggests a current state, not necessarily a permanent one.

So in most situations, it means the distribution centre is shut at the moment, or not open for operation at that time.

If you want to make permanent closure clearer, Portuguese often uses other expressions, for example:

• fechou definitivamente = closed permanently
• encerrou = shut down / ceased operating
• está encerrado = is closed down / is officially closed, depending on context

So está fechado is often more temporary or situation-based.

A learner often notices two accented words here: está and distribuição.

A few useful points:

• In está, the accent mark shows the stressed syllable: tá
• In distribuição, the stress falls on the final ção
• The ending ção is a very common Portuguese ending, roughly like ssão in European Portuguese spelling-based terms

A few European Portuguese pronunciation notes:

• O at the beginning is often pronounced more like a weak u sound
• de is usually very reduced in speech
• unstressed vowels are often much weaker in Portugal than English speakers expect

So the written form is quite clear, but the spoken form in Portugal can sound more compressed than a beginner expects.

The normal, neutral order is:

O centro de distribuição está fechado.

That is the most straightforward way to say it.

You may also hear something like:

Está fechado o centro de distribuição.

This is possible, but it sounds more marked. It can feel as if the speaker is focusing on the fact that it is closed, or answering a question such as What is closed?

So yes, the word order can change, but the original version is the standard neutral one.

For the negative, put não before the verb:

• O centro de distribuição não está fechado.

For a yes-no question, European Portuguese usually keeps the same word order and uses intonation in speech, or a question mark in writing:

• O centro de distribuição está fechado?

You can also answer briefly with:

• Sim, está.
• Não, não está.

This is a very common pattern in Portuguese.