Conn. Gen. Stat. § 46b-36g: Enforcement of premarital agreement.

(a) A premarital agreement or amendment shall not be enforceable if the party against whom enforcement is sought proves that:

(1) Such party did not execute the agreement voluntarily; or

(2) The agreement was unconscionable when it was executed or when enforcement is sought; or

(3) Before execution of the agreement, such party was not provided a fair and reasonable disclosure of the amount, character and value of property, financial obligations and income of the other party; or

(4) Such party was not afforded a reasonable opportunity to consult with independent counsel.

(b) If a provision of a premarital agreement modifies or eliminates spousal support and such modification or elimination causes one party to the agreement to be eligible for support under a program of public assistance at the time of separation or marital dissolution, a court, notwithstanding the terms of the agreement, may require the other party to provide support to the extent necessary to avoid such eligibility.

(c) An issue of unconscionability of a premarital agreement shall be decided by the court as a matter of law.