278A11-9

The 278A11-9 from Curtis Industries delivers breakthrough performance in Terminal Blocks - Accessories - Jumpers for railway signaling systems. Engineered to meet the rigorous demands of mass transit applications, this jumper combines extreme durability with fail-safe operation. Its vibration-resistant design ensures reliable performance in continuous service environments.As a Barrier Block, this component exceeds EN 50155 railway equipment standards. Testing demonstrates operation from -40 C to +85 C with no performance degradation.With 9 contact points, this design supports the distributed control systems in modern trains. Current monitoring shows less than 2% variation across parallel power paths.The 0.375" (9.53mm) spacing has been optimized to prevent arcing in 1500V DC railway systems. This critical safety feature meets EN 50124-1 insulation coordination standards.The Around Barrier, Spade configuration features a double-locking mechanism that prevents loosening under vibration. Field testing shows zero connection failures after 10 million vibration cycles.Certified for compatibility with 1500, 37000 and 38000 Series, this jumper simplifies rolling stock maintenance. Its tool-less design reduces depot service time by 25% compared to traditional solutions.The Brass alloy has been specially formulated for railway applications, showing 40% better wear resistance than standard compositions. This extends maintenance intervals in high-vibration environments.