Pretty common thing. Can get at any electrical shop. Just snap a picture and show it to the shop.

No TNB didnt take it, it was stolen.

Lucky it was only that item stolen, often the theives take everything.

Plug in only. Just don't plug in with your fingers

Please be careful when you plug in the fuse, live current. Before you plug in that fuse, I suggest you make a marking, previously I had mine marked and when it was stolen, I traced it to my new neighbor.

Brought a baseball bat to confront him.

1 side of the copper contact is LIVE. So becarfull not to touch it.

If your hand shaking, than pay some fee for the shop guy to help you.

This is called 63A cutout fuse(common electrician term). I think your brand is PLK, which is approved by TNB. These things get stolen all the time. There is copper inside, so thieves will just sell as scrap. But get the developer to replace one since still under 1yr.

where is your location? PJ/KL/Puchong/Kepong?

In JB, there are a lot of electrical shops in Johor Jaya. You can go to one shop in Bakawali, PS Electrical, I think they should have. There are many other shops there who carries the PLK brand. But I still think you should go to the management and ask them exactly which brand/model, then ask them if they still have. If not then you can go get it from the shops.

But when you install it, make sure you fit in carefully, sparking may occurs if your hands are "shaky", but no need to worry as long as you are careful. Just make sure you are wearing a thick rubber sole for protection. But if the management has an electrician to help you, then please ask them to help.

Just buy change the casing if need too. When I change, some shop told me got 3 to 5 types, i brought the two most identical, lucky one it match.

Then you have found your replacement PMSL

It's not easy to change the whole casing, you need a TNB guy to do it, or any electrician. This is live wire, so you may not be able to handle it. Wait for TNB, just give him some kopi duit, he will kau-tim for you.