66 Pa.C.S. § 502

Whenever the commission shall be of opinion that any person or corporation, including a municipal corporation, is violating, or is about to violate, any provisions of this part; or has done, or is about to do, any act, matter, or thing herein prohibited or declared to be unlawful; or has failed, omitted, neglected, or refused, or is about to fail, omit, neglect, or refuse, to perform any duty enjoined upon it by this part, or has failed, omitted, neglected or refused, or is about to fail, omit, neglect, or refuse to obey any lawful requirement, regulation or order made by the commission; or any final judgment, order, or decree made by any court, then and in every such case the commission may institute injunction, mandamus or other appropriate legal proceedings, to restrain such violations of the provisions of this part, or of the regulations, or orders of the commission, and to enforce obedience thereto. Saved from Suspension. Pennsylvania Rule of Civil Procedure No. 1549(11), adopted June 3, 1994, provided that section 502 shall not be deemed suspended or affected by Rules 1501 through 1536 relating to action in equity. Cross References. Section 502 is referred to in section 2905 of this title.