DNO Cubicles & LV Power Distribution Enclosures are built for outdoor trackside locations and used to supply power to railway trackside signalling, lights and points heating systems. Delvalle designs and manufactures custom electrical enclosures for the railway and tunnel sector, ensuring safety, reliability, and long-term performance in the harshest environments. Key solutions: Trackside signaling and barrier control Power & lighting distribution Vandal-proof station. RSP build high-quality, durable DNO Cubicles / Distribution Cubicles, built from Glass Reinforced Plastic GRP, mild or stainless steel. " This involves embedding sensors within the distribution box to provide real-time data on load, temperature, and arc-fault detection. These include switches, actuators, indicators, circuit breakers, isolators and.