<p>The Automatic Air Circuit Breaker (ACB) you&#39;re considering is a robust choice for industrial and commercial applications, offering a reliable solution for managing electrical distribution. With a rated current range of 500-1250 A, this ACB is versatile enough to handle various load requirements, making it suitable for diverse installations.</p><p>One of the standout features is its rated impulse withstand voltage of 12 kV and an insulation voltage of 1000 VAC. These specifications ensure resilience against transient overvoltages and provide strong insulation properties, contributing to the longevity and safety of your electrical systems.</p><p>Operating at a rated voltage of 690 VAC, this ACB can efficiently manage power distribution in high-demand environments. The trip unit employed in this breaker is the Ekip Touch LSIG, which offers advanced protection functions such as long-time, short-time, instantaneous, and ground fault protection. This comprehensive protection suite ensures that your system remains safeguarded against various fault conditions.</p><p>For scenarios involving short-circuit events, the breaker boasts an impressive breaking capacity of 66 kA. Coupled with a rated short time withstand current of 50 kA, it ensures that even severe faults are handled effectively without compromising system integrity.</p><p>The frame size E1.2 indicates its physical dimensions are optimized for space-saving installations while maintaining performance standards. Additionally, with four poles available, this ACB supports balanced three-phase systems with neutral connectivity options.</p><p>In terms of efficiency and energy management, the power loss value stands at 244 W. This figure reflects its operational efficiency by minimizing unnecessary energy dissipation during normal operation.</p><p>Installation flexibility is enhanced by the horizontal rear spread terminal type design which simplifies connections within switchboards or panels where space might be constrained or specific configurations are required.</p><p>Compliance with IEC 309 standards further validates its suitability for use in international markets by adhering to globally recognized safety and performance criteria.</p><p>Overall this Automatic ACB integrates essential features tailored to meet demanding industrial needs ensuring both operational reliability and safety across varied applications without compromise on quality or compliance standards providing peace-of-mind installation wherever deployed ensuring continuity through precise engineering aligned perfectly towards modern electrical infrastructure demands optimizing both functionality &amp; durability alike!</p>