YIKA Indoor Intelligent Universal Air Circuit Breakers 400A 630A 800A 1200A 1600A 2000A 3200A 4000A ACB Air Circuit Breaker
DW45 series intelligent conventional circuit breaker is applicable for distribution network of AC50Hz with rated voltage up to and including 690V and rated current 400A-6300A, used to distribute electric energy and protect the power equipment against overload, under-voltage, short-circuit or single-phase grounding fault.This circuit breaker has intelligent protection function and accurate selective protection, it improves reliability of power supply and avoids unnecessary power failure. Meanwhile, it has open type communication interface,it is able to carry out four remote controls, satisfying requirements of control center and automptic system.Pulse withstand voltage of this circuit breaker at altitude 2000m is 8000V (it can be corrected for different altitudes according to the standard, but not over 12000V at most).This circuit breaker also can be used as disconnector when it is prepared without intelligent release or sensor.
This circuit breaker is in accordance with GB14048.2Low-voltage switchgear and controlgear-Low-voltage circuit breakers and IEC947-2 Low-voltage switchgear and controlgear-Circuit breakers.
Specifications:
| Main Technical date | |||||||
| Circuit breakers rated current in Table 1 | Tabel 1 | ||||||
| Inm A | In A | ||||||
| 2000 | (400)630,800,1000,1250,1600,2000 | ||||||
| 3200 | 2000,2500,2900,3200 | ||||||
| 4000 | 3200,3600,4000 | ||||||
| 6300 | 4000,5000,6300 | ||||||
| Circuit breakers rated breaking capacity cut short and short-term tolerance of the current see | |||||||
| table 2, circuit breakers arcing distance of a "zero (that is, outside the non-arcing circuit breaker)" | Tabel 2 | ||||||
| Inm A | 2000 | 3200 | 4000 | 6300 | |||
| Rated limit short-circuit breaking capacity Icu(kA)/O-CO |
400V | 80 | 100 | 100 | 120 | ||
| 690V | 50 | 65 | 75 | 85 | |||
| Rated short-circuit making capacity nxIcu(kA)/COSΦ |
400V | 176/0.2 | 220/0.2 | 220/0.2 | 264/0.2 | ||
| 690V | 105/0.25 | 143/0.2 | 165/0.2 | 187/0.2 | |||
| Rated service short-circuit breaking capacity Ics(kA)/O-CO-CO |
400V | 50 | 65 | 80 | 100 | ||
| 690V | 40 | 65 | 65 | 75 | |||
| Rated short-time withstand current Icw(kA)1S, time delay 0.4S, O-CO |
400V | 50 | 65 | 65/80(MCR) | 85/100(MCR) | ||
| 690V | 40 | 50 | 50/65(MCR) | 65/75(MCR) | |||
| Note: breaking capacity indexes of upper and low incoming lines are the same. | |||||||
| Max dissipation power of circuit breaker is 360W. Rated continuous current change of circuit breaker under different ambient temperatures as shown in table 3. |
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| Table3 | |||||||
| DW45 ℃ |
400A | 630A | 800A | 1000A | 1250A | 1600A | 2000A |
| 40 | 400A | 630A | 800A | 1000A | 1250A | 1600A | 2000A |
| 50 | 400A | 630A | 800A | 1000A | 1250A | 1600A | 1900A |
| 60 | 400A | 630A | 800A | 1000A | 1250A | 1600A | 1800A |
| Note: derating factor for 2500A above is 0.9, and the capacity does not fall at 4000A within 6300A. | |||||||
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