Contattore,interruttore automatico,inverter solare,contatore elettrico,batterie solari
Model Designation Interpretation (Speculative, Based on 3VT8 Series Naming Rules)
Il modello “3VT8-63H102” provided by the user is a simplified version; the complete model usually contains more detailed information. The speculative meaning of each part is as follows:
| Segmento modello | Speculative Meaning | Descrizione |
| 3VT8 | Siemens SENTRON 3VT8 Series Interruttore automatico scatolato | Interrotto, replaced by 3VA/3VM/3VC series |
| 63 | Corrente nominale (In): 63UN | Maximum current for long-term operation at 40掳C ambient temperature |
| H | Classe del potere di interruzione: Classe H (50IL) | Breaking capacity classes of 3VT8 series: Class N (25IL), Classe H (50IL), Class L (65IL) |
| 102 | Speculated as a combination of frame current + pole number/trip unit type | 100Una cornice (VT100), 2-configurazione dei poli, Thermal-Magnetic Trip unit (TMF) |
Most Probable Corresponding Complete Models: 3VT8106-1AA03-0AA0 (3-palo, 63UN, Class H breaking capacity, TMF trip unit) or 3VT8106-1AA04-0AA0 (4-palo)
- Parametri delle specifiche principali (Based on 3VT8 100H 63A TMF)
| Elemento parametro | Valore delle specifiche | Descrizione |
| Tipo di prodotto | Interruttore automatico scatolato (MCCB) | Used for overload and short-circuit protection in power distribution systems |
| Corrente del fotogramma (Iu) | 100UN | VT100 frame, compatible with a maximum rated current trip unit of 63A |
| Corrente nominale (In) | 63UN | Rated operating current at 40掳C ambient temperature |
| Capacità di interruzione massima (terapia intensiva) | 50IL (415/440V e) | Class H breaking capacity, meeting the requirements of industrial power distribution systems |
| Tipo di unità di sgancio | Thermal-Magnetic Trip unit (TMF) | Protezione da sovraccarico (elemento termico): caratteristica del tempo inverso; Protezione da cortocircuito (elemento magnetico): instantaneous tripping |
| Numero di poli | 3-pole or 4-pole | 3-pole is commonly used in power distribution systems; 4-pole is adopted when neutral wire protection is required |
| Tensione operativa nominale (Ue) | 400/415V e | Suitable for three-phase industrial power distribution systems |
| Tensione di isolamento nominale (Ui) | 690V e | Conforme alla norma CEI 60947-2 standard |
| Temperatura operativa | -25C ~ +70C | Derating is required when the temperature exceeds 40C |
| Metodo di cablaggio | Front Panel Wiring | Rear panel wiring or plug-in connection is optional |
| Metodo operativo | Maniglia rotante | Electric operating mechanism is optional for remote control |
III. Caratteristiche e vantaggi del prodotto
- Alta affidabilità: A member of Siemens SENTRON series, compliant with the international IEC 60947-2 standard.
- Elevato potere di rottura: Class H 50kA breaking capacity, effectively interrupting short-circuit faults and protecting equipment safety.
- Flexible Configuration: Compatible with a variety of accessories (contatti ausiliari, contatti di allarme, sganciatore, sganciatore di minima tensione, ecc.).
- Progettazione della sicurezza: Lockable rotary operating mechanism to prevent misoperation; Terminal cover protection for enhanced safety.
- Dimensioni compatte: Saving switchgear space, facilitating installation and maintenance.
- Scenari applicativi tipici
- Sistemi di distribuzione dell'energia industriale: Used as incoming/outgoing circuit breakers in distribution boxes to protect cables and lines.
- Protezione del motore: Serves as protection equipment for direct starting of three-phase squirrel-cage motors, fornendo protezione da sovraccarico e cortocircuito.
- Transformer/Capacitor Protection: Protecting distribution transformers and compensation capacitors to prevent fault expansion.
- Main Switch/Emergency Stop Switch: Combined with a lockable operating mechanism, used as the main switch and emergency stop control for equipment or systems.
- Automazione degli edifici: Applied in power distribution protection for lighting, air conditioning and other systems in commercial buildings and industrial plants.
- Important Notes and Alternative Solutions
- Stato del prodotto
The 3VT8 series was officially discontinued in January 2024 and fully replaced by Siemens’ new-generation 3VA/3VM/3VC series molded case circuit breakers. The 3VT8 series is no longer in production, with only limited spare parts support available.
- Modelli alternativi consigliati (Based on 63A, Class H Breaking Capacity, 3-palo, TMF Trip Unit)
| Alternative Series | Modello consigliato | Vantaggi |
| 3VA1 Series | 3VA1063-3ED36-0AA0 | Maggiore potere di interruzione (25kA→36kA), more advanced tripping technology, richer accessory options |
| 3VM Series | 3VM1063-1EA00-0AA0 | Conveniente, suitable for basic power distribution applications, facile da installare |
| 3VC Series | 3VC1063-1AA00-0AA0 | Thermal-magnetic and electronic trip units optional, high intelligence level, supporting communication functions |
- Precauzioni per l'uso
- Derating Operation: When the ambient temperature exceeds 40°C, the rated current must be derated according to the temperature coefficient.
- Abbinamento accessori: Pay attention to matching the accessory with the circuit breaker model and pole number when selection, such as the voltage level of the shunt release.
- Specifiche di installazione: Ensure installation in a switchgear that meets requirements, with proper ventilation and heat dissipation maintained.
- Manutenzione regolare: Periodically inspect the circuit breaker appearance, operating mechanism and trip unit performance to ensure reliable operation.
- Replacement Suggestion: For new projects, it is recommended to directly select 3VA/3VM/3VC series alternative products to achieve better performance and a longer service life.
