Why I see many transparent relays print 80A/100A?

This printing is fake printing. Please never use this relay under 80A/100A. It will cause safety problem. 

Many trading companies will fake print on the transparent relays with 80A, 100A but these relays can not even pass 40A relay test (even the double contacts type). The reason is that current is decided by the pin width. The larger pin width, the higher current. 6.3mm pins can max. load 40A. Therefore, only the big pins 9.2mm can load 80A from the thesis perspect.

What's the advantage of the transparent relays?

There are also advantages of transparent relays. The led light and transparent shell can easily show the relay is working or not.

Recommendation

If you are concerned of the quality, if you want to sell to car factories, if you want a good reputation of your store, we would recommend you to buy black shell auto relays.

If you like the transparent relays, we would recommend you to buy transparent relays with good materials (car factory setting) to guarantee the quality.