<p>When considering an accessory for your electrical setup, especially in industrial and commercial environments, it&#39;s crucial to focus on the specifications that ensure compatibility and reliability. This particular product is designed with a robust set of features tailored for high-demand applications.</p><p>Rated at a substantial 4000 A current capacity, this accessory can handle significant power loads, making it suitable for heavy-duty operations. Such a rating ensures that your system can operate efficiently without risk of overload under standard conditions. The rated voltage stands at 690 VAC, which aligns well with common industrial voltage requirements, ensuring seamless integration into existing systems.</p><p>The product boasts a rated impulse withstand voltage of 12 kV. This specification indicates its ability to endure transient overvoltages such as lightning strikes or switching surges, providing an added layer of protection and longevity to your installations.</p><p>With a rated insulation voltage of 1000 VAC, safety is prioritized by preventing electrical breakdowns between conductive parts within the equipment. This feature is essential in maintaining operational security and reducing risks associated with electrical faults.</p><p>Designed with four poles and featuring a frame size of E4.2, this accessory offers versatility in application while maintaining structural integrity and performance standards expected from modern electrical components. Its horizontal rear spread terminal type allows for straightforward connections in various setups while accommodating different installation preferences or spatial constraints.</p><p>A tightening torque requirement of 70 N-m underscores the importance of secure connections that prevent loosening under vibration or thermal expansion conditions—critical factors in dynamic environments where stability is paramount.</p><p>Complying with IEC 309 standards means this product meets international benchmarks for safety and performance—a reassurance when integrating it into diverse systems worldwide. Such compliance ensures that you are investing in equipment adhering to stringent global criteria.</p><p>This accessory is particularly suitable for use with the E4.2 frame size devices, ensuring compatibility across specific ranges without requiring extensive modifications or adjustments during installation processes.</p><p>In summary, this accessory combines high-rated capacities with protective features and international compliance standards to deliver reliable performance across demanding applications. Whether you&#39;re upgrading existing systems or setting up new installations, these specifications provide peace of mind through consistent operation and adherence to industry norms.</p>