The safety and reliability of rail vehicles are a top priority for major network operators. Meeting the growing demand for products and solutions conforming to EN 50657:2017 standard, Sécheron’s BMS contactors are compliant with the requirements for Basic Integrity as specified in this standard.


  • The BMS & SEC contactors are the corner stone of our contactor range for rail vehicles. They offer the market’s best performances, and are highly valued for their compact dimensions and lightweight.
  • The BMS & SEC ranges are used as separation contactors on AC vehicles, line contactors on DC vehicles, roof line contactors on locomotives, and protection contactors for Permanent Magnet Synchronous Motors, among other applications.

  • Featuring thermal currents from 800 A to 1,800A, for applications up to 1,800 VDC and 2,000 VAC, the BMS contactors also offer a 4,800 VAC rated insulation voltage for applications with service frequency up to 400 Hz. They can be delivered in 1-pole, 2-pole or 3-pole configurations
  • The SEC contactors covers mainly rated voltages up to 3,600/4,000 VDC/AC and thermal current from 1,000 A to 1,300 A.

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