Areebah RanaHafiz LiquatKashif Raza2014-02-172014-02-172013https://escholar.umt.edu.pk/handle/123456789/1021Advisor: Numan AhmadEngineering is not only a theoretical study but also the implementation of all that knowledge for creating new and making things more easy and useful for humans. Now a day a very common issue created by Wapda is not only the load-shedding but also the over-load and under-load voltage issues that harms the house hold electronics badly that made us think to make a protection scheme that protects the house hold goods from damaging . As its purpose is to protect any of house hold etectronic to get into an overload or under load conditions. By disconnecting the supply voltage through a relay and this is how we can save our electronic machines by getting replaced.en3-Phase ProtectionThesis