What is a 20Amp Connection Unit?

[harky 1]

i went to hardware shop than uncle tell me to buy this for my heater, what is this??
i open up and see, actually nth special inside

after google search, i found tht  this is call 20Amp Connection Unit.

My parent hdb will be having HIP upgrading for their toilet. 

 

 

Edited July 31, 2016 by harky

[w7_lee 11]

It is like the 13amp fuse in our normal 3-pin plug but this is rated for 20amp and cannot be plug/unplug easily. Probably also more moisture resistant.

Edited August 20, 2016 by w7_lee