<p>In the world of industrial and commercial electrical systems, reliability and safety are paramount. The Automatic Air Circuit Breaker (ACB) detailed here is designed to meet these demanding requirements with precision and efficiency. With a rated current ranging from 1280 to 3200 A, this ACB is well-suited for handling substantial electrical loads, making it an excellent choice for large-scale installations.</p><p>The breaker boasts a rated impulse withstand voltage of 12 kV and a rated insulation voltage of 1000 VAC, ensuring robust protection against overvoltage conditions. Operating at a rated voltage of 690 VAC, it fits seamlessly into various power distribution networks commonly used in industrial settings.</p><p>One of the standout features of this ACB is its impressive breaking capacity of 100 kA. This high capacity ensures that even in the event of significant fault currents, the breaker can interrupt the flow safely without damage to itself or connected equipment. Complementing this is its rated short time withstand current capability of 85 kA, which provides additional assurance during transient conditions.</p><p>The Ekip Touch LSIG trip unit integrated into this breaker offers advanced protection functionalities including long-time (L), short-time (S), instantaneous (I), and ground fault (G) protections. This versatility allows for tailored protection strategies that enhance system stability and safety.</p><p>Designed with four poles, this ACB supports balanced load distribution across phases while maintaining system integrity. Its frame size E4.2 indicates a compact yet robust construction suitable for space-conscious installations without compromising on performance.</p><p>Efficiency in operation is further underscored by its power loss rating at just 743 W, reflecting energy-conscious engineering that minimizes operational costs over time. The horizontal rear spread terminal type facilitates straightforward installation procedures and maintenance access—an essential factor for ongoing operational reliability.</p><p>This Automatic ACB adheres to IEC standards, specifically IEC 309 approvals, affirming its compliance with international safety norms—a critical consideration for engineers seeking dependable components in their designs.</p><p>Overall, whether you&#39;re upgrading existing systems or designing new ones from scratch, this automatic air circuit breaker offers an optimal blend of performance specifications suited to modern industrial needs without unnecessary complexity or cost implications often associated with higher-end models.</p>