I have previously shared my Odam Atölyem article with a simple method of protection that can be used especially for the testing of SMPS power supplies.
The structure of the system is simple, the series 220V lamp is connected to the 220V AC line. When the overcurrent is applied, the lamp gives light, the voltage is decayed and the connected circuit is protected. I used this system for years, especially the power rating of the lamp was struggling for me to connect stronger lamps in high power circuits. I have done the system that I had in mind for a long time
There are 3 lamps in the system 100W, 200W, 300W each switch connected to the key I want to use the lamp I turn off the other’s key
LAMP CONNECTION SCHEMATIC
Since the lamp on the surface of the wall is rough, I removed the wand from the hangers and mounted it on the chipboard. I fixed the keys with adhesive and silicone. Finally I connected the crocodile and the key with 2 li lights and cut the phase and the neutral at the same time. It is necessary to have 2 line cut and light for security.
CAUTION: There are a few safety precautions that you need to. Firstly, cover the connection parts of lamp and cable switches with silicon after soldering. The keys on the chipboard are easily insulated with silicone. The key of cable is more elaborate. We wrap the switch around with the electric tapes. Our aim is to seal the silicone around isolate solder joints