CNS Moulded Case Circuit Breaker
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- Company Profile
With 30 years experience, we produce quality MCCB with moderate price. Looking for dealer, wholesaler and other type of clients for further cooperation.
Functions and characteristics
| Item No. | CNS 800-1600 | |
| Number of poles | 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 and EN60947-2 | ||
| Rated current(A) In | In | 800, 1000, 1250, 1600 |
| Rated insulation voltage(V) | Ui | 800 |
| Rated impulse withstand voltage(kV) | Uimp | 8 |
| Rated operational voltage(V) | Ue | AC 50/60Hz,690 |
| Breaking capacity levels | N H | |
| Utilization category | AC | 220/240V 85 85 |
| 380/415V 50 70 | ||
| 440V 50 65 | ||
| 500/525V 40 50 | ||
| 660/690V 30 42 | ||
| Operation performance | Mechanical | 10000 |
| Electrical 440V | 5000 | |
| Protection Chart C-1 | ||
| Overload protection | long-time delay | Ir (In x......) |
| Short-circuit protection | short-time delay | Isd (Ir x......) |
| Instantaneous | Ii (In x......) | |
| Indication and control auxiliaries | ||
| Auxiliary switch | ■ | |
| MX Shunt coil | ■ | |
| MN under-voltage coil | ■ | |
Protection
Chart C-1
Protection thresholds and delays are set using the adjustment dials.
Offer standard long time delay setting module.
overload protection
True rms long-time protection.
Thermal memory: thermal image before and after tripping.
Short-circuit protection
Short-time(rms) and instantaneous protection.
Selection of l't type(ON or OFF)for short-time delay.
Neutral protection
On 3-pole circuit breakers, neutral protection is not possible.
On 4-pole circuit breakers, neutral protection may be set using a three-position switch: neutral unprotected (4P 3d), neutral protection at 0.5lr (4P 3d +N/2) or neutralprotection at lr (4P 4d).
lndications
Overload indication by alarm LED on the front; the LED goes on when the current exceeds the long-time trip threshold.
Test
A mini test kit or a portable test kit may be connected to the test connector on the front to check circuit-breaker operation after installing the trip unit or accessories.
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