| Customization: | Available |
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| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Electric Type |
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AC circuit breaker is an essential safety device used in electrical systems to protect electrical circuits from excessive current flow due to an overload or a short circuit. AC Circuit breakers are typically used in residential, commercial, and industrial applications to maintain the safety and functionality of electrical systems.
The main components of an AC circuit breaker are:
Contacts: These are the conductive parts that allow the flow of current when the circuit breaker is closed (ON position) and interrupt the current flow when the circuit breaker is open (OFF position).
Bimetallic strip: This component is made from two different metals bonded together. The strip bends when heated due to the difference in thermal expansion coefficients of the metals. In the event of an overload, the heat generated by the excessive current causes the bimetallic strip to bend, triggering the circuit breaker to trip and interrupt the current flow.
Electromagnetic coil: This coil generates a magnetic field when current flows through it. If the current exceeds a certain threshold (as in the case of a short circuit), the magnetic field becomes strong enough to actuate the circuit breaker mechanism, causing it to trip and interrupt the current flow.
Arc extinguishing chamber: When the contacts separate during a trip, an electric arc forms between them. The arc extinguishing chamber helps to cool and extinguish the arc, preventing damage to the contacts and other components.
| Installation | |
| Contact position indicator | Yes |
| Protection degree | IP20 |
| Reference temperature for setting of thermal element | 30°C |
| Ambient temperature | -5~+40°C and its average over a period of 24h does not exceed +35°C |
| Storage temperature | -25~+ 70°C |
| Terminal connection type | Cable/U-type busbar/Pin -type busbar |
| Terminal size top/bottom for cable | 25mm2 |
| Tightening torque | 2.5N.m |
| Mounting | On DIN rail FN 60715 (35mm) by means of fast clip device |
| Connection | Top and bottom |
FAQ
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