Selective main circuit breakers S 750 series The technology

Brief description

Selective main circuit breakers of the S 750 series fully

comply with E DIN VDE 0641-21. They operate voltage

independent, i.e. their function does not depend on auxilary

source (SHU). They are designed for mounting onto 40 mm

busbar systems (4- or 5-pole, 5/10 mm x 12 mm).

Independant of current rating of S 750. short circuit

discrimination of up to 10.000 A or even higher is available

for the downstream circuit-breakers.

The short-circuit capacity of the S 750 is 25 kA

(system voltage 230/400 V AC) throughout the entire range

of rated current.

Due to its particular current-limiting selectivity features,

STOTZ selective main circuit breakers support downstream

circuit-breakers in limiting the energy when a short circuit

occurs, thus reducing the load on the back-up fuse and the

entire electrical installation.