<p>The Series 255 switch is a robust and reliable component designed for industrial and commercial applications. With a rated voltage of 240 VAC and a current capacity of 4 A, it fits well into various electrical systems requiring consistent performance. Its housing is crafted from metal, specifically die-cast zinc, providing durability and resistance to harsh environments.</p><p>This switch boasts an impressive degree of protection with IP65 and IP67 ratings, ensuring it withstands dust ingress and water exposure effectively. Such features make it suitable for outdoor or demanding indoor settings where environmental factors could otherwise compromise functionality.</p><p>In terms of compliance, the Series 255 adheres to several standards such as BG-GS-ET-15, CCC, cULus, EC000030, ENIEC 60947-5-1, and ENISO 13849-1. These certifications underscore its safety credentials and compatibility with global regulatory requirements.</p><p>Weighing in at just 153 g, this switch is lightweight yet sturdy enough for easy integration into existing systems without adding undue stress on mounting structures. The contact configuration includes one normally open (NO) and one normally closed (NC) contact, offering versatile switching options to suit varied operational needs.</p><p>The auxiliary contact count stands at one, while the snap action switching type ensures quick response times during operation. This feature is particularly beneficial in automation contexts where precision timing can impact overall system efficiency.</p><p>Equipped with a plunger actuator type that operates at an actuating speed of 10 mm/min, the Series 255 delivers dependable mechanical performance over its lifespan. Speaking of longevity, it boasts an impressive mechanical life expectancy of up to 20 million operations—a testament to its engineering quality.</p><p>Silver contact material enhances conductivity while minimizing wear over time. Additionally, the cable cross-section measures at 0.75 sq-mm—an optimal size balancing flexibility with sufficient current carrying capability without excess bulk.</p><p>In summary, the Series 255 offers a compelling mix of durability through its rugged construction materials and extensive protective features alongside reliable performance metrics tailored for technical professionals seeking efficient solutions in their electrical setups.</p>