Hello 007008,
The neon should only illuminate when the switch is on and it maybe that the supply and load connections are wired the wrong way around. You should ask an electrician to check this.
The 50 Amp rating is fine as it just means that the switch is rated to handle a higher current than your previous one.
Thank you for using Screwfix Q&A.
Answered by: JTremain
Date published: 2021-11-28