Moulded Case Circuit Breaker MCCB 3p (KNM3 Series MODIFIED TYPE) with Ce CB 160A/250A
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KNM3 series moulded case circuit breaker rated insulation voltage of this circuit breaker is 750V which is applicable for the electricity distribution net of AC 50Hz, rated working voltage 690V and below, rated working
current from 6A to 1600A.
KNM3 series moulded case circuit breaker applies
The rated insulation voltage of this circuit breaker is 750V which is applicable for the
electricity distribution net of AC 50Hz, rated working voltage 690V and below, rated working
current from 6A to 1600A. It is used to distribute electric power and protect the line and power
apparatus 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
This product conforms to the requirement of IEC60947-2, GB14048.2 standards.
| Frame class | 130 | 250 | 400 | 630 | 1600 | ||
| Pole No . | 3 | 3 | 3 | 3 | 3 | ||
| Rated current In(A) | 10,15,20, | 125,160, | 250,315, | 400,500,630 | 1000,1250,1600 | ||
| 30,40,50,63,80,100,125,160 | 180,200,250 | 350,400 | |||||
| Type | KNM3-125N | KNM3-160N | KNM3-250N | KNM3-400N | KNM3-630N | KNM3-800N | KNM3-800N | ||
| Rated current In(A) | 125A | 160A | 250A | 400A | 630A | 800A | 1250~1600A | ||
| Rated insulation voltage(V) | 500 | 690 | 800 | 800 | 800 | 800 | 800 | ||
| Rated pulse voltage(KV) | 6 | 6 | 8 | 8 | 8 | 8 | 8 | ||
| Rated working voltage ue (V) | AC500 | AC690 | AC690 | AC690 | AC690 | AC690 | AC690 | ||
| DC250 | DC500 | DC750 | DC750 | DC750 | DC750 | DC750 | |||
| Ultimate short-circuit breaking capacity lcu(KA) AC 50/60Hz |
220/240V | 40 | 50 | 65 | 65 | 65 | 65 | 85 | |
| 380/415V | 25 | 35 | 35 | 35 | 35 | 35 | 50 | ||
| 440V | 16 | 20 | 30 | 30 | 30 | 30 | 40 | ||
| 500V | 12 | 12 | 25 | 25 | 25 | 25 | 35 | ||
| 690V | – | 8 | 14 | 20 | 20 | 20 | 20 | ||
| Operative short-circuit Breaking capacity | 50%luc | 75%luc | 75%luc | 75%luc | 75%luc | 75%luc | 75%luc | ||
| Isolation function | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ||
| Usage category | A | A | A | A | A | B | B | ||
| Mode of tripping unit |
Unadjustable | ■ | ■ | ||||||
| Adjustable thermal trip Unadjustable electromagetic trip | ■ | ■ | |||||||
| Unadjustable | ■ | ■ | ■ | ■ | ■ | ||||
| Machanical life | 25000 | 25000 | 25000 | 20000 | 20000 | 20000 | 10000 | ||
| Electrical life | 8000 | 8000 | 8000 | 7000 | 5000 | 5000 | 5000 | ||
| Outline dimensions(mm) | L | 78 | 90 | 105 | 140 | 210 | 210 | 210 | |
| D | 70 | 70 | 103.5 | 103.5 | 103.5 | 103.5 | 138.5 | ||
| H | 120 | 120 | 170 | 254 | 268 | 268 | 406 | ||
