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.

They are particularly suitable for the following applications:

− in the meter-mounting board as the main isolating device

for the customer

− in main distribution frames or switchgear as selective

group or back-up breaker, especially where a high degree

of continuity of supply is required, e.g. for “installations for

gathering of people”, in “medical locations” and for the

supply of safety equipment.