Collection: Jean Müller

Jean Müller is a German maker of electrical protection, specialised in NH fuses and fuse switch disconnectors. On litio.store you will find the KETO range, used to isolate and protect the battery side of storage systems.

The battery side is where short circuit currents are highest in the whole installation, and where an ordinary fuse is not enough. A KETO disconnector does two jobs at once: a lever opens the circuit so batteries, cables and inverter can be worked on safely, and it houses the NH links that clear short circuits and overloads.

KETO bodies are sold empty or complete with fuse links; the links are also available on their own, chosen to match the system current.