The Catechism in Questions & Answers

213. Is the Holy Spirit active in the sacraments?

in the sacraments. Therefore whenever the triune God is active, the Holy Spirit, as a person of the Godhead, is involved. The sacraments are dispensed in the name and power of the Father, the Son, and the Holy Spirit. Thereby the sacraments have the power to impart salvation.

Sacraments: see Questions 472. et seq.