A distribuidora de energia verifica a rede elétrica e o disjuntor.

These are definite articles, like the in English, and they must agree with the grammatical gender of the noun:

• a distribuidora = the distributor/company → feminine noun
• a rede = the network/grid → feminine noun
• o disjuntor = the circuit breaker → masculine noun

In Portuguese, nouns are usually either masculine or feminine, and the article changes to match.

So:

• a = feminine singular
• o = masculine singular

Even though English just uses the for everything, Portuguese makes this distinction.

Literally, distribuidora de energia means energy distributor.

In natural English, depending on context, it could mean:

• the electricity provider
• the power company
• the electric utility company
• the electricity distributor

So:

• distribuidora = distributor/company that distributes something
• de energia = of energy

In Brazil, this usually refers to the company responsible for supplying electricity in an area.

Because de energia is being used in a general, descriptive way: distributor of energy.

Compare:

• distribuidora de energia = an energy distributor / electricity company
• distribuidora da energia = distributor of the energy

The version with da would sound much more specific, as if you were talking about some particular energy already mentioned.

This is very common in Portuguese: noun + de + noun is often used to describe type or function.

Examples:

• conta de luz = electricity bill
• rede de transporte = transport network
• caixa de ferramentas = toolbox

Verifica is the present indicative, third-person singular, from the verb verificar.

So:

• eu verifico = I check
• você/ele/ela verifica = you/he/she checks
• a distribuidora verifica = the company checks

In this sentence, it can mean:

• checks
• inspects
• verifies

depending on the context.

Because the subject is singular:

• A distribuidora de energia = the electricity company

That whole phrase refers to one company, so the verb must also be singular:

• A distribuidora verifica = The company checks

If the subject were plural, then you would use verificam:

• As distribuidoras de energia verificam... = The electricity companies check...

Rede elétrica literally means electrical network.

Depending on context, it can refer to:

• the electrical grid
• the electrical system
• the wiring/network
• the power network

In a home or building context, it may suggest the electrical installation or wiring system. In a broader utility context, it can mean the power distribution network.

So the best translation depends on the situation, but electrical network/system/grid are all possible.

Because in Portuguese, adjectives usually come after the noun.

So:

• rede elétrica = electrical network
• energia elétrica = electric energy / electricity
• painel solar = solar panel

English often puts adjectives before the noun, but Portuguese usually places them after.

Also, elétrica is feminine singular because it agrees with rede, which is feminine singular:

• a rede elétrica
• as redes elétricas

Disjuntor means circuit breaker.

It is the safety device that interrupts the electrical current if there is an overload or fault.

It is a masculine noun, so:

• o disjuntor = the circuit breaker
• um disjuntor = a circuit breaker

This is a useful household and electrical vocabulary word in Brazilian Portuguese.

Because Portuguese commonly uses articles before nouns, and here the two nouns are different words with different genders:

• a rede elétrica → feminine
• o disjuntor → masculine

So each noun takes its own article.

In English, we might say the electrical network and the circuit breaker or sometimes drop the second the, but Portuguese tends to keep the article with each noun more naturally.

Not naturally in this context.

The most normal version is:

• A distribuidora de energia verifica a rede elétrica e o disjuntor.

If you remove the articles:

• Distribuidora de energia verifica rede elétrica e disjuntor.

it sounds unnatural or headline-like, not like normal everyday Portuguese.

Portuguese uses articles much more often than English, especially with concrete nouns like these.

It can be any of those, depending on context.

Verificar often means:

• to check
• to verify
• to inspect

In this sentence, since it is about electrical infrastructure, checks or inspects may sound most natural in English.

So:

• A distribuidora de energia verifica...
  = The power company checks/inspects...

The exact English choice depends on whether the focus is on confirming something, examining it, or carrying out a technical inspection.

A plural version could be:

• As distribuidoras de energia verificam as redes elétricas e os disjuntores.

Changes:

• A → As
• distribuidora → distribuidoras
• verifica → verificam
• a rede elétrica → as redes elétricas
• o disjuntor → os disjuntores

This is a good example of how Portuguese changes articles, nouns, adjectives, and verbs to match number.

It comes from the verb distribuir = to distribute.

From that, Portuguese forms:

• distribuidor = male distributor / distributor device / distributing entity
• distribuidora = female distributor / distributor company

In business contexts, distribuidora is very often used for a company, and many company-related nouns in Portuguese are feminine:

• a empresa = the company
• a distribuidora = the distributor company

So in this sentence, distribuidora refers to the company, not a female person.