The YCM1-630MMCCB adopts advanced international design and manufacturing technology, offering high breaking capacity, short arcing distance, and anti-vibration performance.
It is widely used in both land and marine applications for AC 50Hz power distribution systems.
This breaker is rated at 63A, with 4 poles, a rated insulation voltage of 800V, and a rated impulse withstand voltage of 8000V (8kV). It provides a limit short-circuit breaking capacity (Icu) of 50kA at 230V, 35kA at 400V, and 10kA at 690V. The working short-circuit breaking capacity (Ics) is 50kA. The rated operation voltage (Ue) is AC400V.
It ensures protection against overload, short circuit, undervoltage, and insulation faults, while also safeguarding motors during infrequent starts.
The breaker can be installed vertically or horizontally and complies with IEC60947-2 standards.
Operating conditions include ambient temperatures from -5°C to +40°C (average ≤35°C), altitude up to 2000m, pollution grade 3, and relative humidity up to 50% at +40°C (allowing up to 90% at +20°C with special measures against dew).
TECHNICAL DETAILS:
| Specification | Details |
| Type/Model | YCM1-630M |
| Poles (P) | 4 |
| Rated Current (In) | 63 A |
| Rated Insulation Voltage (Ui) | 800 V |
| Rated Impulse Withstand Voltage (Uimp) | 8000 V (8 kV) |
| Rated Operation Voltage (Ue) | AC400 V |
| Breaking Capacity Class | M |
| Limit Short-Circuit Breaking Capacity (Icu) | 230V: 50 kA; 400V: 35 kA; 690V: 10 kA |
| Working Short-Circuit Breaking Capacity (Ics) | 50 kA |
| Arcing Distance | 100 mm |
| Electrical Life | 2000 operations |
| Mechanical Life | 10,000 operations |
| Operating Frequency | AC 50 Hz |
| Standards | IEC60947-2 |
| Installation | Vertical or horizontal |
| Applications | Power distribution, overload/short-circuit protection, motor protection, residential, industrial, marine |
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