Function

STOTZ selective main circuit breakers operate voltage

independent. They do not require auxiliary energy for swit

ching the device on or off or for their protection functions.

A straight forward design ensures the reliable protection

function. The functional elements consist of proven electro

mechanical components specifically designed for these

requirements.

The underlying switching principle enables a special selectivity

behaviour: current-limiting selectivity. When a short circuit

occurs, the S 750 supports the downstream mcb and also

limits the energy that has an impact on the installation and –

subsequently – on the network of the supplier. The selectivity

behaviour of the S 750 offers major advantages compared to

fuse-based technologies.