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Product Details
Moulded Case Circuit Breaker (KNM2 Series)
Product Description
The rated insulation voltage of this circuit breaker is 750V which is applicable for theelectricity distribution net of AC 50Hz, rated working voltage 690V and below, rated workingcurrent from 6A to 630A. It is used to distribute electric power and protect the line and poweapparatus from being overload and short-circuit protection of the motor. This circuit breaker can be installed vertically and horizontally. This product complies with standard IEC60947-2,GB14048.2
| No. | Testing current name | I/In | Assumed time | Starting situation |
| 1 | Assumed untripping current | 1.05 | 2h(In>63A), 1h(In≤63A) | Cold state |
| 2 | Assumed tripping current | 1.30 | 2h(In>63A), 1h(In≤63A) | Start right after the number 1 test |
| Type | KNM2-100N | KNM2-160N | KNM2-250N | KNM2-400N | KNM2-630N | KNM2-800N | KNM2-1000N | KNM2-1250N | KNM2-1600N | |
| Rated insulation voltage(V) | 750 | 750 | 750 | 750 | 750 | 800 | 800 | 800 | 800 | |
| Rated pulse voltage(KV) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | |
| Rated working voltage ue (V) | AC690 | AC690 | AC690 | AC690 | AC690 | AC690 | AC690 | AC690 | AC690 | |
| Ultimate short-circuit breaking capacity lcu(KA) AC 50/60Hz | 220/240V | 85 | 85 | 85 | 85 | 85 | 50 | 50 | 50 | 50 |
| 380/415V | 36 | 36 | 36 | 50 | 50 | 50 | 50 | 50 | 50 | |
| 440V | 35 | 35 | 35 | 42 | 42 | 50 | 50 | 50 | 50 | |
| 500V | 25 | 60 | 60 | 60 | 60 | 40 | 40 | 40 | 40 | |
| 525V | 22 | 22 | 22 | 22 | 22 | 40 | 40 | 40 | 40 | |
| 660/690V | 8 | 8 | 8 | 10 | 10 | 30 | 30 | 30 | 30 | |
| Operative short-circuit Breaking capacity | 50% | 75%luc | 75%luc | 75%luc | 75%luc | 75%luc | 75%luc | 75%luc | 75%luc | |
| Isolation function | ||||||||||
| Usage category | A | A | A | A | A | B | B | B | B | |
| Machanical life | 50000 | 40000 | 20000 | 15000 | 10000 | 10000 | 10000 | 10000 | 10000 | |
| Electrical life | 30000 | 20000 | 10000 | 6000 | 4000 | 5000 | 5000 | 4000 | 2000 | |
| W | 105 | 105 | 105 | 140 | 140 | 210 | 210 | 210 | 210 | |
| H | 161 | 161 | 161 | 255 | 255 | 327 | 327 | 327 | 327 | |
| D | 86 | 86 | 86 | 110 | 110 | 147 | 147 | 147 | 147 | |
| Model NO.: | KNM2 Series |
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