This overview compares the Miniature Circuit Breaker CNC NV821624 4P 32A Class C 6kA with similar protective devices from CNC. All compared products share the same core purpose of safeguarding electrical systems against overloads and short circuits, along with an identical breaking capacity (6kA) and tripping curve (Class C). The main practical differences lie in the pole count and rated current, determining their specific application scenarios in residential, commercial, or industrial distribution panels.
⚙️ The table below provides a detailed comparison of parameters such as device type, pole count, rated current, tripping curve, breaking capacity, and application scope for each model.
| Parameter | CNC NV821624 4P 32A | CNC NV821617 4P 25A | CNC NV821457 1P 32A | CNC NV821556 3P 32A | CNC NV821518 2P 25A | CNC NV821563 3P 40A | Practical significance |
|---|
| Device type | 4-pole miniature circuit breaker | 4-pole miniature circuit breaker | 1-pole miniature circuit breaker | 3-pole miniature circuit breaker | 2-pole miniature circuit breaker | 3-pole miniature circuit breaker | The number of poles dictates compatibility with single-phase and multi-phase electrical grids. |
| Rated current | 32 A | 25 A | 32 A | 32 A | 25 A | 40 A | Rated current sets the maximum circuit load before protection is triggered. |
| Tripping curve | Class C | Class C | Class C | Class C | Class C | Class C | All models are suitable for standard loads with moderate inrush currents. |
| Breaking capacity | 6 kA | 6 kA | 6 kA | 6 kA | 6 kA | 6 kA | Provides an identical safety level when handling short-circuit fault currents. |
◎ The table below evaluates which model is best suited for various usage scenarios, installation requirements, and wiring configurations.
| Use case | Recommended product | Why |
|---|
| Three-phase grid with load up to 32 A | Miniature Circuit Breaker CNC NV821624 4P 32A Class C 6kA | Provides full four-pole disconnection for three-phase loads with neutral up to 32 A. |
| Three-phase grid with load up to 25 A | CNC NV821617 Miniature Circuit Breaker 4P 25A Class C 6kA | Suitable for four-wire distribution lines requiring a lower current rating. |
| Single-phase line with load up to 32 A | Miniature Circuit Breaker CNC NV821457 1-Pole 32A C-Curve 6kA | A compact solution for protecting a single phase within a distribution panel. |
| Three-phase grid without neutral at 32 A | Miniature Circuit Breaker CNC NV821556 3-Pole 32A C-Curve 6kA | Optimal for three-phase motors and equipment that do not require neutral switching. |
| Two-phase or single-phase line with phase and neutral switching at 25 A | CNC NV821518 2-Pole 25A Miniature Circuit Breaker Class C 6kA | Ensures simultaneous disconnection of phase and neutral up to 25 A. |
| Heavy-duty three-phase line up to 40 A | CNC NV821563 Miniature Circuit Breaker 3-Pole 40A C-Curve 6kA | Designed for higher current loads in demanding distribution panel layouts. |
The Miniature Circuit Breaker CNC NV821624 4P 32A Class C 6kA differs from the alternatives through its specific combination of a 4-pole configuration and a 32 A rating. This model is most suitable for comprehensive protection of three-phase electrical systems with neutral in residential and commercial environments where simultaneous multi-line disconnection is required. A buyer should prefer this option if project requirements call for four-pole switching at 32 amperes, whereas alternative models better serve single-phase, two-phase, or differently rated electrical circuits.
