<p>When considering a robust solution for circuit protection in industrial and commercial settings, this Non-automatic Air Circuit Breaker (ACB) stands out with its solid technical specifications. Designed to meet the demands of high-capacity electrical systems, it offers reliable performance for various applications.</p><p>The ACB has an impressive rated current of 4000 A, making it suitable for environments where large electrical loads are common. It operates efficiently with a rated voltage of 690 VAC, ensuring compatibility with standard industrial power systems. The breaker also boasts a rated insulation voltage of 1000 V and can withstand impulse voltages up to 12 kV, providing substantial resilience against transient overvoltages.</p><p>With four poles, this ACB is well-suited for three-phase systems requiring neutral connectivity or additional safety measures. Its construction adheres to the IEC 309 standards, confirming its compliance with international safety and performance benchmarks.</p><p>In terms of physical dimensions, the breaker measures 551 mm in width, 425 mm in height, and has a depth of 383 mm. Despite its compact form factor relative to its capacity, it weighs a substantial 74 kg—indicative of its durable build quality suited for heavy-duty use.</p><p>This model features an IP30 degree of protection rating. This means it offers adequate safeguarding against solid objects larger than 2.5 mm while being installed indoors away from moisture exposure—a crucial consideration when planning installations in controlled environments.</p><p>Power efficiency is another notable aspect; the device incurs a power loss of just 900 W under operation—a reasonable figure given its high current handling capability. Such efficiency helps minimize operational costs while maintaining excellent protective functions.</p><p>Overall, this Non-automatic ACB delivers on key fronts: reliability under high current conditions, adherence to rigorous international standards, and efficient energy usage—all wrapped within a sturdy yet manageable footprint ideal for modern-day electrical infrastructures demanding both performance and dependability.</p>