IEG11-28709-1-V Circuit Protection

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

A circuit breaker is a switch device designed to automatically detect a fault and safely disconnect the power source from an electrical circuit. Circuit breakers are essential components of any electrical system, serving to protect the system from surges, overloads, and other stresses that may cause damage or functional disruption. The IEG11-28709-1-V is an example of a medium-sized circuit breaker, designed for applications in low voltage networks.

The IEG11-28709-1-V is a 3-pole circuit breaker, offering protection to three separate electrical phases. It is equipped with a thermal-magnetic trip unit, allowing it to automatically detect and disconnect the power source when the current load reaches or exceeds predefined thresholds. The breaker is capable of interrupting currents of up to 6,000 Amps at a rated voltage of 500 Volts AC, making it suitable for a wide range of commercial and industrial applications, including motor, capacitor, and welding circuits.

The basic working principle of a circuit breaker such as the IEG11-28709-1-V is relatively simple. When the circuit current rises to an anomalous level, the breaker trips and breaks the power source, effectively interrupting the current flow to protect against overload. This trip is initiated by a bimetallic strip that acts as a switch, opening or closing the circuit in response to changes in temperature. When the current load is too high, the temperature of the bimetallic strip rises, and the strip bends to open the circuit. The same action occurs when there is an internal short circuit in the breaker due to an insulation or manufacturing fault.

In addition to this bimetallic trip mechanism, the IEG11-28709-1-V features a magnetic trip unit that is employed to identify sudden increases in current caused by short circuits. This trip unit contains a solenoid coil, which actuates a plunger when the current load exceeds a certain threshold. The plunger acts as a switch, opening or closing the circuit to protect it from overloads.

Both the thermal-magnetic trip and the bimetallic trips are designed to respond to various faults that may occur in the breaker itself. In order to ensure full protection from external faults, a residual current device (RCD) must be connected in series with the breaker. RCDs detect and disengage the electrical circuit whenever a current path is formed that bypasses the load, thus providing an additional level of protection against electric shock.

In summary, the IEG11-28709-1-V is a medium-sized 3-pole circuit breaker, suitable for use as a protection device in commercial or industrial environments. It utilizes a thermal-magnetic trip mechanism to identify sudden increases in current, as well as a bimetallic trip mechanism to identify and disconnect the power source when the current reaches a dangerous level. In order to provide the full range of protection from external faults, a residual current device must be connected in series with the breaker.

The specific data is subject to PDF, and the above content is for reference