Conn. Gen. Stat. § 53a-109: Criminal trespass in the third degree: Class C or class B misdemeanor.

(a) A person is guilty of criminal trespass in the third degree when, knowing that such person is not licensed or privileged to do so: (1) Such person enters or remains in premises which are posted in a manner prescribed by law or reasonably likely to come to the attention of intruders or are fenced or otherwise enclosed in a manner designed to exclude intruders, or which belong to the state and are appurtenant to any state institution; or (2) such person enters or remains in any premises for the purpose of hunting, trapping or fishing; or (3) such person enters or remains on public land which is posted in a manner prescribed by law or reasonably likely to come to the attention of intruders or is fenced or otherwise enclosed in a manner designed to exclude intruders.

(b) Criminal trespass in the third degree is a class C misdemeanor, except that any person found guilty under subdivision (2) of subsection (a) of this section shall be guilty of a class B misdemeanor and fined not less than five hundred nor more than one thousand dollars.