The Miniature Circuit Breaker CNC NV821426 is compared with several similar devices from the same manufacturer within the NV8214 series: Miniature Circuit Breaker CNC NV821464, Miniature Circuit Breaker CNC NV821440, CNC NV821471 Miniature Circuit Breaker, CNC NV821495 Miniature Circuit Breaker, and Miniature Circuit Breaker CNC NV821457. All of these products share a common foundation: they are designed to protect electrical circuits against overloads and short circuits, feature a 6kA breaking capacity, and use a C-curve tripping characteristic, making them suitable for residential and commercial installations. The primary differences lie in the rated current and pole count, which determine the load capacity and type of protected wiring.
⚙️ The specifications comparison table below contrasts key parameters such as the number of poles, rated current, tripping characteristic, breaking capacity, and practical purpose for each model.
| Feature | CNC NV821426 | CNC NV821464 | CNC NV821440 | CNC NV821471 | CNC NV821495 | CNC NV821457 | Practical significance |
|---|
| Number of poles | 1-Pole | 1-Pole | 1-Pole | 1-Pole | 2-Pole | 1-Pole | Single-pole models protect individual phase lines, while the two-pole model switches both phase and neutral simultaneously. |
| Rated current | 16A | 40A | 25A | 50A | 16A | 32A | The rated current must match cable cross-section and connected device load to prevent wiring overheating. |
| Tripping characteristic | C | C | C | C | C | C | All models share a standard C curve, optimal for standard residential and commercial loads with moderate inrush currents. |
| Breaking capacity | 6kA | 6kA | 6kA | 6kA | 6kA | 6kA | An identical short-circuit protection level ensures high safety standards across all options. |
◎ The suitability table below evaluates which product is best suited for different use cases, electrical loads, and buyer requirements.
| Use case | Recommended product | Why |
|---|
| Protecting standard socket groups or lighting circuits | Miniature Circuit Breaker CNC NV821426 | A 16A current rating is ideal for typical household wiring and lighting applications. |
| Protecting high-power household appliances (stoves, heavy heaters) | Miniature Circuit Breaker CNC NV821440 or Miniature Circuit Breaker CNC NV821457 | 25A and 32A ratings accommodate the heavier electrical loads demanded by heavy appliances. |
| Protecting main feeds or heavy lines in commercial spaces | Miniature Circuit Breaker CNC NV821464 or CNC NV821471 Miniature Circuit Breaker | 40A and 50A ratings handle higher operating currents safely without nuisance tripping. |
| Requirement to disconnect both phase and neutral conductors | CNC NV821495 Miniature Circuit Breaker | The 2-pole configuration cuts off two lines simultaneously for enhanced safety. |
The choice between these models depends entirely on your electrical load requirements. The Miniature Circuit Breaker CNC NV821426 is best suited for standard 16A circuits, whereas alternative models are required when handling higher currents or when a two-pole breaker is needed.
