Application
The Residual Current operated Circuit-Breakers (RCCBs) of the AC type adapted to domestic, public, and industrial fields are used in the distribution systems TT, TN, and IT in accordance with the rules and regulations in force. The RCCBs together with the earthing system are therefore used to protect people in case of indirect contacts. These devices characterized by a rated residual differential current of 30mA also assure an additional protection in case of direct contacts. In addition to the function of protection against direct or indirect contacts, the Residual Current operated Circuit-Breakers (RCCBs) incorporate a protective function against the danger of fire in the event of insulation breakdown.
 
Classification
--- AC type: Residual Current operated Circuit-Breakers (RCCBs) for AC fault currents;
--- A type: Residual Current operated Circuit-Breakers (RCCBs) for AC and pulsating DC fault currents, offering a high resistance to surge current pluses;
--- B type: Residual Current operated Circuit-Breakers (RCCBs) for AC, pulsating DC and smooth DC fault currents.
Technical Data
--- AC type Residual Current operated Circuit-Breakers (RCCBs) for AC currents type: AC
--- Rated residual fault currents I¡÷n:30mA,100mA, 300mA;500mA
--- Rated residual non-operating currents I¡÷no:15mA, 50mA, 150mA,250mA
--- Rated current In:16,25,40,63,80A
--- Rated voltage Un: AC 125V-230V(2P),AC 230V-400V(4P)
--- Rated differential breaking capacity Im:800A,
--- Resistance to surge current pulsed-lightning or switchgear manipulation-according to IEC 1008-1
--- Compliance with the standards: IEC 1008-1,EN61008-1,GB16916-1
--- Tripping time I¡÷n T<0.1S,5I¡÷n t<0.04S | 
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