Pojistný limit je v potvrzení o pojištění.

Here is the structure:

• pojistný limit = the subject, literally insurance limit
  • pojistný = insurance / insured-related adjective
  • limit = limit
• je = is
• v potvrzení o pojištění = a prepositional phrase meaning in the insurance certificate / in the confirmation of insurance
  • v = in
  • potvrzení = confirmation, certificate
  • o pojištění = literally about insurance, but in this context it means of insurance or regarding insurance

So the sentence is built very simply:

[subject] + [is] + [location]

= Pojistný limit + je + v potvrzení o pojištění

This is a very common confusion.

• pojistný = insurance-, relating to insurance
• pojištěný = insured, covered by insurance

So:

• pojistný limit = insurance limit / policy limit
• pojištěný limit would sound like an insured limit, which is not the intended meaning

They come from related verbs/nouns, but they mean different things:

• pojištění = insurance
• pojistit = to insure
• pojištěný = insured
• pojistný = insurance-related

Czech has no articles, so there is no direct equivalent of a / an / the.

That means:

• pojistný limit can mean an insurance limit or the insurance limit
• v potvrzení can mean in a certificate or in the certificate

The exact meaning depends on context. In this sentence, the context makes it clear that English would probably use the:

• The insurance limit is in the certificate of insurance.

Here potvrzení is in the locative case.

The preposition v usually takes:

• locative when it means in
• accusative in some expressions of movement, but not here

So:

• v potvrzení = in the certificate

The noun potvrzení is a neuter noun ending in -í, and in the singular it looks the same in the nominative and locative:

• nominative: potvrzení
• locative: v potvrzení

So the form does not change visibly, but the case still matters grammatically.

Yes, o often means about, and it takes the locative case.

In this phrase, potvrzení o pojištění, Czech uses o + locative where English uses of:

• potvrzení o pojištění = literally confirmation about insurance
• natural English: confirmation/certificate of insurance

This is a good example of how Czech and English use different prepositions with certain nouns.

Other examples:

• kniha o historii = a book about history
• informace o letu = information about the flight
• potvrzení o studiu = certificate/confirmation of study / student status
• potvrzení o pojištění = certificate/confirmation of insurance

So yes, the literal sense is about insurance, but the natural translation here is of insurance.

Because it is an adjective agreeing with limit.

• limit is a masculine inanimate noun
• in the nominative singular, a typical hard adjective modifying a masculine inanimate noun ends in -ý

So:

• pojistný limit

Compare:

• pojistná smlouva = insurance contract
  
  • smlouva is feminine, so the adjective changes to pojistná
• pojistné plnění = insurance benefit / claim payment
  
  • plnění is neuter, so the adjective changes to pojistné

This is standard adjective agreement in Czech.

Potvrzení is a neuter noun, and it belongs to a common group of Czech nouns ending in -í.

It means things like:

• confirmation
• certificate
• written confirmation

In practical usage, potvrzení often refers to an official document.

That is why in this sentence potvrzení o pojištění is often best understood as:

• insurance certificate
• certificate of insurance
• confirmation of insurance

Yes. Czech word order is more flexible than English word order.

The neutral order here is:

• Pojistný limit je v potvrzení o pojištění.

But you could also say:

• V potvrzení o pojištění je pojistný limit.

This version puts more focus on where the insurance limit is found.

In English, changing the order often sounds marked or unnatural, but in Czech it is much more normal because case endings show the grammatical roles.

Still, the original sentence is a very natural neutral sentence.

Both v and ve mean in.

Ve is used mainly for easier pronunciation before certain consonant clusters or in some fixed combinations.

For example:

• ve škole = in school
• ve městě = in the city

But here v potvrzení is easy to pronounce, so plain v is used.

So:

• v potvrzení = correct
• ve potvrzení would sound unnatural here

A rough pronunciation guide:

• Pojistný ≈ poh-yist-nee
• limit ≈ lee-mit
• je ≈ ye
• v = a short v
• potvrzení ≈ pot-vr-zeh-nee
• o = short o
• pojištění ≈ poh-yish-tyeh-nee

A few important pronunciation points:

• j in Czech sounds like English y
• š sounds like sh
• č would sound like ch in church (not used here)
• ř is a special Czech sound, but it does not appear in this sentence
• stress is normally on the first syllable of each word:
  • PO-jistný
  • LI-mit
  • PO-tvrzení
  • PO-jištění

Yes, it is a very common official/document phrase.

It is the sort of wording you see in insurance paperwork, forms, or administrative language. Depending on context, it can be translated as:

• confirmation of insurance
• certificate of insurance
• proof of insurance

So even though the grammar is transparent, it also functions as a standard set expression in real-life Czech.