Commutateurs de transfert automatiques de type PC CHINT (ATS）NH42-63/4SZ

The Chint NH42-63/4SZ belongs to the NH42 series PC-type automatic transfer switches (ATS), primarily used in 50Hz AC, 400V/415V rated voltage three-phase four-wire power supply systems. It supports automatic or manual switching between normal and standby power sources, suitable for scenarios requiring high power supply reliability, such as hospitals and data centers. Below are the key parameters and usage guidelines:

1. Paramètres et fonctions de base
2. Rated Current and Poles

– Le “63” in the model indicates a rated current of 63A, while “4” signifies a four-pole design, capable of switching three-phase live wires and the neutral wire (Champ N) simultaneously to ensure reliable neutral wire connection.

– It supports manual operation and can also achieve automatic switching via an external controller. Note that the load power supply will be briefly interrupted during the switching process.

2. Breaking Capacity and Trip Characteristics

– The rated making and breaking capacity of this series of switches is 10 fois le courant nominal (10C'est à dire). For the 63A model, the breaking capacity can reach 630A. Cependant, it should be noted that the actual short-circuit breaking capacity (such as Icu or Ics) shall be subject to the official technical manual. PC-type switches generally focus more on isolation functions rather than short-circuit protection.

– The trip characteristics are not explicitly stated in the search results. It is speculated that a C-type curve (déclenchement instantané à 5-10 fois le courant nominal) may be adopted, suitable for conventional power distribution circuits.

3. Certifications and Standards

– Certifié par la Chine CCC (Certificate No.: 2020980307002091), conforme à la CEI 60947-6-1 et GB/T 14048.11 normes.

Note: UL certification is not mentioned. For use in the United States, it is recommended to contact local distributors to confirm whether alternative models compliant with North American standards (such as the NH40 series) or certified versions are available.

1. Application Scenarios and Installation
2. Applications typiques

– Two-power-source switching: Suitable for scenarios such as mains power and standby generators, or dual mains power, to ensure continuous power supply for critical loads (par ex., éclairage de secours, medical equipment).

– Fonction d'isolement: Can be used as an isolating switch to meet safety isolation requirements during maintenance.

2. Exigences d'installation

– Température ambiante: -5°C à +40°C, altitude not exceeding 2000 mètres. Éviter l'installation dans un endroit humide, corrosive environments or flammable and explosive locations.

– Spécifications de câblage: Installation must be performed by professional electricians to ensure reliable connection of the neutral wire (Champ N) and that the circuit meets the rated current requirements.

III. Achat et solutions alternatives

1. Market Information

– For users in the United States, cross-border suppliers can be inquired via WhatsApp: +86-13811255435, but attention should be paid to transportation costs and certification compliance.

2. Alternative Model Recommendations

– For UL certification requirements, consider the Chint NH40 series or Schneider WATSN series (par ex., WATSN-100/63/4A).

– For low-current scenarios, models such as NH42B-32/4SZ can serve as cost-effective alternatives.

1. Précautions
2. Functional Limitations

– Cannot directly start motors, and power supply will be interrupted during switching, making it unsuitable for power-sensitive equipment (par ex., precision instruments).

2. Maintenance Suggestions

– Regularly inspect the contact status to ensure no oxidation or ablation; the operating handle should be flexible to avoid jamming.

It is recommended to obtain detailed technical manuals through Chint’s official website (WhatsApp: +86-13811255435) or local authorized distributors to confirm key parameters such as breaking capacity and trip curves. Pour les États-Unis. marché, contact Chint’s international business departments (par ex., manufacturing bases in Vietnam or Singapore) to inquire about compliant products.