Audited Supplier
1. Product Introduction:
With a rated current from 200A to 6300A, and rated operational voltage 415V 690V, 50Hz, the NA8G series air circuit breaker (hereinafter referred to as "breaker") is mainly used in the distribution network to distribute electric energy and protect lines and power equipment from being damaged by overload, under voltage, short circuit, single-phase grounding and other failures.
Having art-oriented appearance, high breaking capacity, zero arcover and vanities of intellectualized protection functions, that breaker can be used for selective protection with accurate action, no unnecessary power cut, and better power supply reliability.
The product allows the wire to enter or enter from the lower port, and the open frame (draw-out) circuit breaker has isolation function.
That breaker can be widely used for power stations, factories, mines and modern tall buildings, especially the distribution system in the intelligent building, and also widely used in green projects such as wind and solar power generation.
This product meets the requirements in IEC/EN 60947-2
2..1 When theambientair temperature is-5C - +40 C, the mean value is no greater than +35C within 24 hours.
2.2 Altitude: not higher than 2000m for the installation site.
2.3 When the ambient air temperature is +40C, the relative humidity of the air shall not be higher than 50%;a higher relative humidity is allowed at a lower temperature; for example, forthe wettest month, the maximum relative humidity averaged shall be 90% while the lowest temperature averaged in that month + 20C , and special measures shall betakenforthecondensation occasionally produced due to temperature change.
2.4 Class of pollution: 3
2.5 The installation category of the breaker' main circuit is IV; when the rated operational voltage of the main circuit is less than or equal to AC400V, The installation category of the control circuit and auxiliary circuit is III, apart from the similarity between the under voltage release coil and the intellectual controller's power transformer primary coil and the breaker;When the rated operational voltage of the major loop is greater than AC400V and less than or equal to AC690V, it is necessary for the control circuit and auxiliary circuit to be isolated from the major loop, and the highest operational voltage of the control circuit and auxiliary circuit is AC400V, the installation category of the control circuit and auxiliary circuit being III.
3. Main technical parameters
| Shell grade rated current | Inm A | 1600 | 3200 | 6300 | |
| Rated current In A | 200,400,630,800, 1000,1250,1600 | 1600,2000,2500, 2900,3200 | 4000,5000 | 6300 | |
| Nominal insulation voltage Ui | V | 690 | 1000 | 1000 | |
| Rated operational voltage Ue | V | 415 690 | 415 690 | 415 | |
| Rated ultimate short circuit breaking capacity leu kA | 50 25 | 100 65 | 120 | ||
| Rated service short circuit breaking capacity les kA | 40 20 | 80 65 | 100 | ||
| Rated short time withstand current lcw,1s kA | 40 20 | 80 65 | 100 | ||
| Number of poles | 3P 4P | 3P 4P | 3P 4P | 3P | |
| Frequency of operation (number of times/h) | 20 | 10 | 10 | ||
| Mechanical life | 3000 | 3000 | 2000 | ||
| Number of operations | Electrical Life | 1000 | 1000 | 500 | |
| Flashover distance mm | 0 | 0 | 0 | ||
| Line incoming pattern | Wire to enter from the upper or lower port | Wire to enter from the upper or lower port | Wire to enter from the upper or lower port | ||
| fixed type kg | 22/26.5 | 52.5/66.5 | - | ||
| Net weight (3 poles/4 poles) | draw-out type kg | 42.5/55 | 98/121 | 210/233 | 233 |
| Size(3 poles/4 poles) | fixed type | 320x(254/324)x258 | 406x(422/537)x329 | - | |
| Height x width x depth | draw-out type | 351 x(282/352)x352 | 439x(435/550)x445 | 439x(835/928)x501 | 439x928x501 |
