Chint NXBLE63 – 2P/C40

Chint NXBLE63 – 2P/C40 is a 2 – pôle (2P.) miniature residual current circuit breaker. Its main parameters and functions are as follows:

Paramètres de base

Courant nominal: 40UN (“Q40” indicates that the tripping characteristic is Type C and the rated current is 40A);

Numéro de pôle: 2P. (cuts off both the live wire and the neutral wire simultaneously);

Protection contre le courant résiduel: Type CA (detects ordinary AC leakage). The residual operating current is usually 30mA (an industry conventional value, and some models support options such as 50mA/75mA);

Capacité de coupure: 6le (can safely cut off circuits with a short – circuit current of not less than 6000A);

Tension Applicable: 230V (for single – circuits de phases);

Mechanical/Electrical Life: The mechanical life is 20,000 fois, et la durée de vie électrique est 10,000 fois.

Fonctions principales

1. Protection contre le courant résiduel: When there is electric shock to the human body (current ≥ 30mA) or equipment leakage in the circuit, l'alimentation électrique est rapidement coupée en 0.1 second to prevent electric shock casualties;
2. Protection contre les surcharges: If the circuit load is too large (current exceeds 40A), it will automatically disconnect to avoid overheating and fire of the circuit;
3. Court – Protection des circuits: Lorsqu'un court-circuit se produit dans le circuit (current increases sharply in an instant), the circuit is cut off immediately to protect electrical appliances and the circuit;
4. Fonction d'isolement: It can be used as a switch for infrequent on – off of the circuit under normal conditions.

Scénarios d'application

Électricité domestique: For high – power socket circuits in kitchens, salons, etc.. (comme les climatiseurs, chauffe-eau électriques), it replaces traditional air switches and adds residual current protection;

Petit – scale Commercial Places: For socket or lighting circuits in convenience stores and offices, meeting the electricity demand within 40A;

Decoration and Renovation: Upgrading the residual current protection of old circuits to meet the new national standard’s requirement that “socket circuits must be equipped with residual current protection”.

Installation and Use Precautions

– It should be selected according to the actual load of the circuit to avoid “a big horse pulling a small cart” ou “a small horse pulling a big cart”;

– Appuyez sur le “bouton de test (T key)” once a month to verify whether the residual current protection function is normal;

– Lors de l'installation, the live wire (L) et le fil neutre (N) must be distinguished. If the wiring is reversed, the residual current protection function may fail.