High Breaking Capacity (6kA):
The circuit breaker can safely interrupt fault currents up to 6,000 Amps, ensuring protection against short circuits and preventing damage to the electrical system.
Thermal-Magnetic Tripping Mechanism:
Combines thermal overload protection and magnetic short-circuit protection:
Thermal Protection: Trips the breaker if the current exceeds 1.13–1.45 times the rated current (50A) for a prolonged period.
Magnetic Protection: Trips the breaker if the current exceeds 5–10 times the rated current, providing immediate protection against short circuits.
Wide Operating Temperature Range:
Operates effectively in environments ranging from -25°C to +70°C, suitable for diverse climatic conditions.
Compact Design:
DIN rail mounting with a width of 52.5 mm, allowing efficient use of panel space.
Long Service Life:
Offers 20,000 mechanical operations and 4,000 electrical operations, ensuring durability and reducing maintenance needs.
| Feature |
Specification |
| Model |
MC350A / MCN350 / MU350A |
| Number of Poles |
3 (Three-phase) |
| Rated Current (In) |
50A |
| Rated Operational Voltage (Ue) |
230/400V AC (Three-phase) |
| Rated Short-Circuit Breaking Capacity (Icn) |
6 kA (IEC 60898-1) |
| Rated Ultimate Short-Circuit Breaking Capacity (Icu) |
10 kA (IEC 60947-2) |
| Rated Insulation Voltage (Ui) |
500V |
| Rated Impulse Withstand Voltage (Uimp) |
4000V |
| Thermal Tripping Range (AC) |
1.13 to 1.45 times In |
| Magnetic Tripping Range |
5 to 10 times In |
| Frequency |
50/60 Hz |
| Power Loss at In |
14.8 W (Total), 5.75 W per pole |
| Mechanical Endurance |
20,000 operations |
| Electrical Endurance |
4,000 operations |
| Mounting Type |
DIN rail |
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