R-BULK

The R-BULK by 3M sets new benchmarks in Terminals - Wire Splice Connectors technology for railway signaling systems. This fail-safe connector maintains flawless operation despite constant vibration, temperature extremes, and electromagnetic interference in rolling stock applications.Implementing Twist On Wire Cap, Wing technology, this connector achieves EN 50155 Category 1 vibration resistance. Testing at 5-200Hz frequency sweeps shows zero contact interruptions at 50m/s acceleration.With 1 protected channels, this terminal meets EN 45545-2 fire safety requirements. The ceramic-filled housing prevents toxic smoke generation during tunnel fires.The Twist On method creates gas-tight joints that withstand 1000 thermal shock cycles per EN 61373. The metallurgical bond prevents fretting corrosion from micro-vibrations.Accepting 10-18 AWG railway cables, this connector handles both 110V control circuits and 1500V traction power. The dual-material contacts prevent bimetal corrosion in DC systems.Fully Insulated materials maintain CTI 600 tracking resistance in polluted environments. Testing confirms >108 surface resistance after salt fog exposure per EN 60068-2-52.Incorporating Copper Wire Only, Flame Retardant, this connector series achieves EN 50121-3-2 EMI standards. The triple-shielded design reduces RF emissions by 40dB at 1GHz compared to conventional railway connectors.The Red scheme complies with EN 50125-1 visibility requirements. Photochromic markings adapt to lighting conditions from bright sunlight to tunnel darkness.