<p>In the realm of electrical engineering and automation, selecting the right Automatic Air Circuit Breaker (ACB) is crucial for ensuring reliable and efficient power distribution. This particular ACB offers a robust solution with its impressive specifications tailored for industrial and commercial applications.</p><p>Designed to handle demanding environments, this ACB supports a rated current ranging from 640 to 1600 A. Such flexibility makes it suitable for various installations while maintaining optimal performance. The device&#39;s rated voltage stands at 690 VAC, aligning well with standard industrial requirements.</p><p>Safety is paramount, and this ACB does not disappoint. It features a rated impulse withstand voltage of 12 kV, providing excellent protection against transient overvoltages commonly encountered in power systems. Additionally, its rated insulation voltage of 1000 VAC ensures that the circuit breaker can safely isolate electrical circuits when necessary.</p><p>The breaking capacity of this unit is an impressive 66 kA, allowing it to effectively interrupt fault currents without compromising system integrity. Furthermore, it boasts a rated short time withstand current of 50 kA, which enhances its ability to manage high fault conditions momentarily without sustaining damage.</p><p>Equipped with an Ekip Touch LSIG trip unit, users benefit from advanced protection features including Long-time (L), Short-time (S), Instantaneous (I), and Ground fault (G) protections. This comprehensive suite ensures that your system remains safeguarded against diverse electrical faults.</p><p>The frame size of E1.2 provides a compact yet durable housing for the circuit breaker components. With three poles available, it efficiently manages three-phase power systems commonly found in industrial settings.</p><p>For ease of installation and maintenance, the terminal type is designed as horizontal rear spread. This configuration facilitates straightforward connections while optimizing space within electrical panels or switchboards.</p><p>In terms of standards compliance, this automatic ACB adheres to IEC 309 regulations—ensuring that it meets international safety and performance benchmarks essential for global operations.</p><p>Lastly, considering energy efficiency is always wise; this unit has a power loss rating of 400 W during operation—a reasonable figure given its capabilities in handling substantial currents effectively.</p>