<p>When it comes to industrial and commercial applications, selecting the right Air Circuit Breaker (ACB) is crucial for ensuring safety and efficiency. The Non-automatic ACB with a frame size of E4.2 offers robust performance tailored for demanding environments.</p><p>This ACB is designed to handle substantial electrical loads with a rated current of 4000 A, making it suitable for large-scale operations. It operates efficiently within a rated voltage of 690 VAC, providing reliable protection against overcurrents.</p><p>Safety and reliability are paramount in any electrical system, and this ACB excels in both areas. With a rated impulse withstand voltage of 12 kV and an insulation voltage of 1000 VAC, it ensures superior protection against transient overvoltages. The breaking capacity stands at an impressive 66 kA, which means it can safely interrupt fault currents without compromising the integrity of your system.</p><p>The device&#39;s short-time withstand current rating also matches its breaking capacity at 66 kA, indicating its ability to endure high fault conditions for short durations without damage. This makes it an ideal choice for installations where reliability under stress is non-negotiable.</p><p>Power efficiency remains a consideration despite the high ratings; this unit has a power loss of just 900 W, reflecting its efficient design that minimizes energy wastage while maintaining optimal performance levels.</p><p>With four poles available on this model, users benefit from enhanced flexibility in various configurations. The horizontal rear spread terminal type facilitates straightforward installation and maintenance in complex setups where space or accessibility might be limited.</p><p>Compliance with IEC 309 standards underscores the product’s adherence to international safety and performance benchmarks—an essential factor when considering equipment for professional use across diverse industries.</p><p>In summary, this Non-automatic ACB provides high-rated current handling capability alongside excellent safety features such as high impulse withstand voltage and strong insulation properties. Its robust construction ensures dependable operation even under significant load conditions while maintaining energy efficiency through minimal power loss—a reliable choice backed by international standards compliance that professionals can trust for their critical applications.</p>