<p>The Automatic Air Circuit Breaker (ACB) is a robust solution for industrial and commercial electrical systems, designed to handle demanding environments with precision and reliability. This ACB has a rated current of 4000 A, making it suitable for high-capacity applications where dependable performance is crucial.</p><p>One of the standout features is its rated impulse withstand voltage of 12 kV, ensuring resilience against transient overvoltages commonly encountered in industrial settings. Additionally, it boasts a rated insulation voltage of 1000 V and operates efficiently at a rated voltage of 690 VAC.</p><p>The ACB is equipped with an Ekip Hi-Touch LSIG trip unit, providing comprehensive protection through its advanced electronic release type (EL). This ensures precise fault detection and enhanced system safety by offering Long-time, Short-time, Instantaneous, and Ground fault protection functionalities.</p><p>With a breaking capacity of 66 kA, this circuit breaker can effectively interrupt substantial fault currents without compromising system integrity. The degree of protection is IP30, which offers adequate protection against solid foreign objects up to 2.5 mm in diameter—a practical choice for controlled indoor environments.</p><p>Installation is straightforward with the bolt terminal type design that supports secure connections. It&#39;s essential to adhere to the specified tightening torque of 70 N-m during installation to maintain optimal contact pressure and electrical continuity.</p><p>In terms of dimensions, this ACB measures 384 mm in width, 371 mm in height, and has a depth of 270 mm—compact enough for integration into existing switchgear configurations while maintaining ample space for heat dissipation. Despite its compact size, it weighs in at a substantial 56 kg due to its durable construction materials designed to withstand rigorous operational demands.</p><p>Power loss stands at 465 W under full load conditions—an acceptable trade-off given the high performance output expected from such equipment. This product complies with IEC standards specifically IEC 309—assuring users that it meets international quality benchmarks for safety and performance.</p><p>For professionals seeking an automatic circuit breaker that combines high current handling capabilities with reliable protective functions within stringent compliance frameworks—this model delivers on all fronts without compromise on build quality or operational efficiency.</p>