The Miniature Circuit Breaker CNC NV821501 2-Pole 20 Ampere Curve C 6kA Breaking Capacity is compared with several similar circuit protection alternatives from CNC: Miniature Circuit Breaker CNC NV821532 3-Pole 20A C-Curve 6kA, CNC NV821617 Miniature Circuit Breaker 4P 25A Class C 6kA, CNC NV821471 Miniature Circuit Breaker, 1-Pole, 50A, C Curve, 6kA Breaking Capacity, CNC NV821495 Miniature Circuit Breaker 2-Pole 16 Ampere Curve C 6kA Breaking Capacity, and Miniature Circuit Breaker CNC NV821525 3-Pole 16 Amps C Curve 6kA Breaking Capacity. All compared products share the same brand reliability, a standard 6kA breaking capacity, and a C tripping curve for effective short-circuit defense. The core differences lie in the pole count, rated current, and suitability for single-phase versus multi-phase electrical distribution boards.
⚙️ The specifications comparison table below contrasts key parameters including pole count, rated current, tripping curve, breaking capacity, and practical applications for each model.
| Parameter | CNC NV821501 (main) | CNC NV821532 | CNC NV821617 | CNC NV821471 | CNC NV821495 | CNC NV821525 | Practical significance |
|---|
| Pole count | 2-Pole | 3-Pole | 4-Pole | 1-Pole | 2-Pole | 3-Pole | Defines compatibility with single-phase or multi-phase distribution systems and the number of protected lines. |
| Rated current | 20 A | 20 A | 25 A | 50 A | 16 A | 16 A | Indicates maximum load current; the 20A model suits standard residential or commercial circuit requirements. |
| Tripping curve | Curve C | Curve C | Curve C | Curve C | Curve C | Curve C | All compared units feature the versatile C curve suitable for general loads with moderate inrush currents. |
| Breaking capacity | 6 kA | 6 kA | 6 kA | 6 kA | 6 kA | 6 kA | Ensures an identical baseline fault-current interruption safety level across all options. |
◎ The suitability table below evaluates which model fits specific user requirements, electrical loads, and installation scenarios.
| Use case | Recommended product | Why |
|---|
| Protecting a 2-pole 20A line | Miniature Circuit Breaker CNC NV821501 2-Pole 20 Ampere Curve C 6kA Breaking Capacity | Directly matches the load and pole requirements for a 20A two-conductor circuit in a distribution board. |
| Protecting a 3-phase 20A system | Miniature Circuit Breaker CNC NV821532 3-Pole 20A C-Curve 6kA | Provides three-pole protection tailored for three-phase electrical systems operating up to 20A. |
| Protecting a 4-pole 25A system | CNC NV821617 Miniature Circuit Breaker 4P 25A Class C 6kA | Suits heavier three-phase installations requiring neutral switching and a higher 25A current rating. |
| Protecting heavy 50A circuits | CNC NV821471 Miniature Circuit Breaker, 1-Pole, 50A, C Curve, 6kA Breaking Capacity | Offers a high 50A single-pole capacity for heavy-duty incoming lines or high-draw equipment. |
| Protecting a 2-pole 16A line | CNC NV821495 Miniature Circuit Breaker 2-Pole 16 Ampere Curve C 6kA Breaking Capacity | Ideal for standard two-conductor circuits requiring a lower 16A threshold. |
| Protecting a 3-phase 16A system | Miniature Circuit Breaker CNC NV821525 3-Pole 16 Amps C Curve 6kA Breaking Capacity | Delivers three-pole protection for balanced three-phase loads with a 16A rating. |
The Miniature Circuit Breaker CNC NV821501 2-Pole 20 Ampere Curve C 6kA Breaking Capacity differs from the alternatives by offering a two-pole configuration combined with a 20-ampere rating, making it ideal for two-conductor circuits of moderate capacity. A buyer should prefer this model when safeguarding a 20A residential or commercial line requiring two protected poles, whereas the alternative options are better suited for single-pole, three-pole, or four-pole setups with different current and phase requirements.
