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Tableau Comparatif : Commutateur de Transfert Auto (ATS) vs Système Disjoncteur (MCCB)
| Feature | Full Automatic Transfer Switch (ATS) | MCCB Transfer System |
| Standard | IEC 60947-3 (Switches, disconnectors) | IEC 60947-2 (Circuit breakers) |
| Structure | Integrated single body (two load disconnectors) | Combination of two separate MCCBs |
| Accessories | No extra accessories needed | Needs shunt, closing, and undervoltage coils |
| Interlocking | Built-in mechanical interlock | Requires external mechanical interlocking |
| Monitoring | Mechanical indicator or LED status | Only mechanical visibility |
| Internal Protection | 10A porcelain fuse for Motor & PCB | No specialized protection for motor mechanism |
| Contactor Mode | Available (Auto-return to 0 without signal) | Not available (Only positions I and II) |
| Contact System | Sliding Contacts (Non-sticking/Non-overlapping) | Opening Contacts (Risk of sticking/clashing) |
| Breaking Capacity | Stable 50kA and 100kA | Variable (Usually less than 100kA) |
| Installation | Compact, same size for 3P & 4P, easy mounting | Bulky, different sizes for 3P & 4P, complex |
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