3P 63A miniature circuit breaker curve C 6kA without RCD 400V

1) Reliable protection against overload and short-circuit (without residual current function)This tripolar miniature circuit breaker (MCB) 3P – 63 A is designed to protect your circuits in domestic or commercial distribution. It trips quickly in the event of an overload (too many appliances connected, prolonged demand beyond the line capacity) or a short-circuit (fault causing a sudden rise in current), thereby limiting the risks of conductor overheating, equipment deterioration and damage to the electrical panel. Please note: non-residual current model, it does not detect earth leakage currents and does not replace personal protection of the RCD/RCCB/RCBO type. It is above all an “overcurrent” protection dedicated to the line.2) 3P format for three-phase networks: simultaneous disconnection and consistent protectionThe 3-pole (3P) configuration allows coordinated protection and disconnection of the three phases, an essential point for many three-phase outgoing circuits. This choice is particularly relevant for three-phase equipment (pumps, fans, compressors, light machine tools, certain professional kitchen appliances) and for three-phase outgoing circuits in a distribution board. In the event of a fault, simultaneous disconnection helps preserve the installation and facilitates maintenance operations, with a protection logic suited to electrical architectures commonly encountered in France.3) C tripping curve: versatile for everyday useEquipped with a C curve, this circuit breaker offers an excellent compromise between sensitivity and tolerance to inrush currents. It is generally recommended for common uses: socket circuits, lighting, small motors, air conditioning, mixed loads. The C curve limits nuisance tripping linked to the normal start-up of certain appliances, while ensuring a clear reaction in the event of a short-circuit. For loads with very high inrush current (large motor drives, certain transformers), another curve may be more suitable depending on the installation study: the choice must always take account of the actual use and the characteristics of the network.4) Key electrical characteristics: 63 A, 50/60 Hz, up to AC 400 V, 6 kA breaking capacityThe 63 A rating corresponds to the maximum permissible current under continuous operation in standardised conditions: it must be consistent with the cable cross-section, installation method, ambient temperature and line length. Compatibility with 50–60 Hz allows flexible use on the majority of networks. The stated operating range up to AC 400 V is suitable for usual three-phase distribution environments. With a breaking capacity of 6 kA, the device meets a level frequently used in standard distribution. However, in installations close to a transformer or with a high prospective short-circuit current, it may be necessary to opt for a higher breaking capacity after verification.5) EN 60898-1 compliance and implementation recommendations (safety and selectivity)Compliant with EN 60898-1, this miniature circuit breaker fits into a consistent “Euro-standard” selection approach for distribution boards. For a safe installation, it is advisable to have the 63 A rating validated by a professional: a circuit breaker that is too “strong” in relation to the conductors may allow the line to heat up before tripping. Terminal tightening must be carried out carefully (conductors correctly stripped, copper securely held, no stray strands), and a check after first energisation is recommended to detect any abnormal heating. In damp areas, socket circuits, outdoors or premises accessible to the public, combining with residual current protection (RCD/RCCB/RCBO) remains best practice for personal protection: this model, without residual current protection, is primarily intended for protection against overload and short-circuit.