Counterfeit electrical supplies such as knock-off power circuit breakers are tracked by a variety of agencies. A manufacturer may issue a recall to round up unsafe knock-offs, or the government may issue a warning to beware of a certain lot of power circuit breakers of suspicious origins. The best place to get information on counterfeits is often the manufacturer's official site under the "news" or "press releases" category. You can also get information from the government on recalls, suspicious products and other information on counterfeits at Recalls.gov. This website provides information on unsafe and hazardous products including knockoffs and counterfeit electrical supplies. You can search for recalls, check the status of recent recalls, and even sign up for e-mail updates.