40 Pa. Stat. § 476
No person shall be excused from testifying or from producing any books, papers, contracts, agreements, or documents at any hearing held by the Insurance Commissioner, or at the trial or hearing before any magistrate, justice of the peace or judge, of any person or company charged with violating any of the provisions of sections three hundred and forty-six (346), three hundred and forty-seven (347), three hundred and forty-eight (348), and three hundred and forty-nine (349) of this act, on the ground that such testimony or evidence may tend to incriminate himself, but no person shall be prosecuted for any act concerning which he shall be compelled so to testify or produce evidence, documentary or otherwise, except for perjury committed in so testifying.
40 P.S. § 476