WENZHOU SANTUO ELECTRICAL CO.,LTD.
Reputation is the first, quality is the priority.
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1. Functions and characteristics
| Item No. | 100-250 | 400-630; 800-1600(NS) | |
| Number of poles | 3P, 4P | 3P, 4P | |
| Control | Manual | with toggle/with direct or extended rotary handle | |
| Connections | Fixed | front connections | |
| Plug-in | front connections/rear connections | ||
| Electrical characteristics as per IEC60947-2 and EN60947-2 | |||
| Rated current(A) | In | 40°c | |
| Rated insulation voltage(V) | Ui | 750 | |
| Rated impulse withstand voltage(kV) | Uimp | 8 | |
| Rated operational voltage(V) | Ue | AC50/60Hz, 690V | |
| Utilization category | A | ||
| Operation performance | Mechanical | 8500 | 6000 |
| Electrical | 1500 | 1000 | |
| Protection | Chart B-1 B-2 | ||
| Indication and control auxiliaries | |||
| Auxiliary switch | / | ||
| MX shunt coil | / | ||
| MN under-voltage coil | / | ||
2. Excellent performance:
STNSX dual rotary contact structure and the energy release system to ensure stable and reliable protection, and has excellent current-limitting characteristics. Transparent aluminum cover protects the trip unit from settings, rotary handle, motor operation mechanism, etc. can be installed.
3. Compliance with standards
International standards
♦ IEC947-1: general rules
♦ IEC947-2: circuit breakers
♦ IEC947-4: contactors and motor starters
♦ IEC947-5.1: control circuit devices and switching elements; automatic control components.
4. Working environment
♦ Altitude belows 2000m;
♦ Circuit breaker may be used between -25°c and +70°c. For temperatures higher than 40°c (65°c for circuit breakers used to protect motor feeders), devices must be derated.
♦ It can withstand the impact from humid air, salt spray, oil mist and mold;
♦ It should be installed in places with no danger of explosion, no conductive dust, and no substance enough to corrode metal or damage the insulation.
♦ In places with no rain and snow erosion;
♦ Pollution degree 3;
♦ Installation category III.
5. More details
6. The main function of circuit breaker
CNSX series of MCCB offers comprehensive function choice. These functions can be used easily, and can be completely applied into every field safety.