40 Pa. Stat. § 117
No policy of insurance against loss or damage resulting from accident to or injury suffered by an employee or other person and for which the person insured is liable, or against loss or damage to property caused by animals or by any vehicle drawn, propelled or operated by any motive power and for which loss or damage the person insured is liable, shall hereafter be issued or delivered in this State by any corporation, or other insurer, authorized to do business in this State, unless there shall be contained within such policy a provision that the insolvency or bankruptcy of the person insured shall not release the insurance carrier from the payment of damages for injury sustained or loss occasioned during the life of such policy, and stating that in case execution against the insured is returned unsatisfied in an action brought by the injured person, or his or her personal representative in case death results from the accident, because of such insolvency or bankruptcy, then an action may be maintained by the injured person, or his or her personal representative, against such corporation, under the terms of the policy, for the amount of the judgment in the said action, not exceeding the amount of the policy.
40 P.S. § 117