CNS Moulded Case Circuit Breaker
Inquire NowWith 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.
