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MCCB Highlights
ARM5 double breaking type high icu=ics mccb Main functions and features
Pneumatic protection device
When the circuit breaks with large current, the gas in the contact unit box is rapidly pressurized, and the pneumatic protection device rapidly fluctuates the operating mechanism latch under strong air pressure, greatly reducing the damage of the breaking current to other electrical components and buses.
Magnetic blow design
The current flows through the fixed contact to generate an electromagnetic source, which forms an annular magnetic field arc with the iron core and quickly enters the arc extinguishing chamber under the action of the magnetic field, which is conducive to quickly break the current.
Frequently Asked Questions (FAQ)
What are the main functions and features of the ARM5 MCCB?
The ARM5 is a double breaking type high icu=ics MCCB. Its main features include a pneumatic protection device and a magnetic blow design, both engineered to handle large breaking currents efficiently and minimize system damage.
How does the pneumatic protection device operate during a circuit break?
When the circuit breaks under a large current, the gas inside the contact unit box is rapidly pressurized. Under this strong air pressure, the pneumatic protection device quickly fluctuates the operating mechanism latch to break the current swiftly.
How does the pneumatic protection device prevent damage to other electrical components?
By rapidly fluctuating the operating mechanism latch under strong air pressure, it greatly reduces the duration and impact of the breaking current, thereby protecting other electrical components and buses from severe damage.
What is the purpose of the magnetic blow design in the ARM5 MCCB?
The magnetic blow design uses the current flowing through the fixed contact to generate an electromagnetic source. This forms an annular magnetic field arc with the iron core, drawing the arc quickly into the arc extinguishing chamber to facilitate rapid current breaking.
What does high icu=ics signify for this double breaking type MCCB?
High icu=ics indicates that the service short-circuit breaking capacity (Ics) is equal to the ultimate short-circuit breaking capacity (Icu). This ensures the ARM5 MCCB maintains high reliability and performance even after interrupting maximum fault currents.
