FR-Series Railway hydraulic magnetic circuit breaker



Hydraulic magnetic circuit breaker for very high current railway applications to protect electronic equipment and components against unintended high currents. Optional with integrated auxiliary contacts to monitor the circuit.
The trip point is always at maximum allowable current, independent of ambient temperature. Mid-trip handle to indicate clearly a breaker operation caused by electrical fault. With unique arc chute design which results in high interrupting capacities. Up to 3 poles which all break its electronic circuits when 1 breaker trips, for optimal protection of the system. Wide range of currents from 100 A to 700 A and many options available.



To be used in every high current application where electrical systems, circuits or components must be protected against too high currents. This situation can occur, when under strained or heavy use a motor or other load-generating component within the equipment will draw additional current from the power source. High currents cause the wires or components to overheat and ultimately burn up.
A circuit protection device should be employed at any point where a conductor size changes. Many electronic circuits and components like transformers have a lower overload withstand threshold level than conductors such as wires and cables. These components require circuit protection devices featuring very fast overload sensing and opening capabilities.
The FR circuit breaker can be used in all Railway applications where protection against overload and short circuit is necessary, for example HVAC systems, (door) control systems, braking systems, passenger information systems, etc.




  • Ideal for very high current applications
  • Precise, temperature independent operation
  • Panel/wall mount
  • Integrated auxiliary contacts (optional)
  • Up to 3 poles configuration
  • High interrupting capacities due to unique arc chute method
  • Mid-trip handle for electrical trip indication (optional)
  • Immediate resetting possible
  • Wide current range: 100 - 700 A
  • Wide choice of time delays
  • Maximum voltage 137.5 VDC / 277 VAC
  • High contact pressure & longer contact life due to wiping self-cleaning contacts
  • Flexibility by many options

Railway Compliancy

All our circuit breakers are designed according:
  • IEC 60077 - 1/2/3/4
  • NF F62-001 - 1/2/3
  • NF F16-101/102
  • EN 45545-2
  • EN 50155
  • EN 61373
  • EN 50124-1
  • IEC 60068-2-30
  • IEC 60068-2-52
  • NF F61-010
  • MIL Method 107D, condition A
  • MIL-STD-202G, Method 204C

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Railway rolling stock
Railway signalling