High Short-Circuit Breaking Capacity (6kA):
The breaker can safely interrupt fault currents up to 6,000 Amps, providing essential protection in the event of short circuits. This high breaking capacity is critical for industrial and commercial environments where fault currents can be substantial.
C-Type Tripping Curve:
The C-type curve means the breaker trips at a multiple of the rated current (between 5 to 10 times the rated current) for short circuit conditions. This is ideal for loads with moderate inrush currents, such as motors or transformers, ensuring the breaker remains operational during normal startup without tripping unnecessarily.
Thermal-Magnetic Protection:
The thermal protection trips the breaker if the current exceeds 1.13 to 1.45 times the rated current (40A) over an extended period, preventing equipment damage from sustained overloads.
The magnetic protection triggers an instantaneous trip if the current exceeds 5 to 10 times the rated current, providing fast protection against short circuits.
Rated for Three-Phase Systems:
This breaker is designed for three-phase electrical systems, providing comprehensive protection across all three phases. It is suitable for use in a wide variety of three-phase applications, including motors, lighting systems, HVAC, and more.
Durable and Long-Lasting:
The mechanical endurance is rated at 20,000 operations, while the electrical endurance stands at 4,000 operations, ensuring reliable operation even after many years of use.
The breaker’s long operational life reduces the need for frequent maintenance or replacements, making it a cost-effective solution for long-term installations.
Wide Operating Temperature Range:
The operating temperature range is from -25°C to +70°C, making this breaker suitable for a variety of environments, from extremely cold climates to hot industrial settings.
Motor and Transformer Protection: The C-type curve is especially suited for inductive loads such as motors and transformers, where inrush currents are common.
Renewable Energy Systems: Protecting solar inverters, wind turbines, or other renewable energy systems that use three-phase power.
| Feature |
Specification |
| Model |
MC340A / MCN340A / MU340A |
| Rated Current (In) |
40A |
| Number of Poles |
3 (Three-phase) |
| 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 |
1.13 to 1.45 times In |
| Magnetic Tripping Range |
5 to 10 times In |
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