<p>When it comes to ensuring reliable electrical protection in industrial and commercial settings, selecting the right miniature circuit breaker (MCB) is crucial. The MCB from the M300P series stands out as a robust choice, offering a balance of technical performance and practical design.</p><p>Rated at 40 A, this MCB efficiently handles substantial electrical loads, making it suitable for various applications. Its rated voltage of 415 V and insulation voltage of 500 V provide confidence in its ability to manage high-power environments safely. For those concerned with transient over-voltages, it boasts an impressive rated impulse withstand voltage of 6 kV.</p><p>The MCB&#39;s breaking capacity is a noteworthy feature at 25 kA, indicating its capability to interrupt fault currents effectively without compromising safety or performance. This makes it particularly valuable in scenarios where high fault levels are expected.</p><p>Designed with practicality in mind, this MCB features three poles and follows the Magnetic D curve type. This curve type is ideal for protecting circuits with inductive loads where short-circuit response needs to be quick yet controlled.</p><p>Installation is straightforward thanks to its DIN rail mounting design—a common standard that simplifies integration into existing systems. With dimensions measuring 52.5 mm in width, 88 mm in height, and 69 mm in depth, it fits well within compact spaces while maintaining operational efficiency.</p><p>The product&#39;s durability extends across a wide ambient temperature range from -40 to 70 degrees Celsius, ensuring reliable operation even under extreme conditions. It also adheres to IEC/EN 60947-2 standards and approvals—an assurance of quality recognized globally within the industry.</p><p>For ease of installation and maintenance, consider the tightening torque specification set at 2.8 N-m which ensures secure connections without over-tightening risks. Weighing just 0.372 kg, it&#39;s lightweight enough for easy handling during setup or replacement processes.</p><p>Attention has been given not only to functionality but also aesthetics; housed in RAL 7036 Grey color housing which provides a neutral appearance suitable for most industrial environments while adhering aesthetically pleasing norms.</p><p>Finally addressing environmental considerations: this device carries an IP3 degree of pollution rating—adequate for typical indoor installations where dust or moisture might present moderate challenges but still require dependable protection solutions against potential ingress hazards posed by such elements commonly found around factory floors warehouses etcetera alike!</p>