SMCBs are selective main circuit breakers for overload and short-circuit protection in
electrical installations. They offer total selectivity to downstream mcbs and outstanding
selectivity to upstream protective devices due to unique
current limiting selectivity.
Since S700 breakers are designed for overvoltage category IV and incorporate
isolation function, they are predestinated for the use in any main distribution cabinet or
meter board as main protecting and switching device. ABB SMCBs are line-independant
without any connection to Neutral.
The ABB SMCB range covers:
- S750 SMCBs for direct mounting onto 40mm 4-/5-pole busbar systems E-charakteristic, 16 - 63A, 1-pole and 3-pole block
- S750DR SMCBs for direct mounting onto 35mm DIN rails E- and K-characteristic, 16-63A, 1- to 4-pole, 3pole block,
- S700 SMCBs for direct flat surface mounting, 40 or 60mm busbar mounting and 35mm DIN rail mounting via adapters, E- and K-characteristic, 10-100A, 1- to 4-pole, with AUX (optional)