RI-tech s.r.o. > Products > Railway > Rolling stock > Railway relays

Railway relays

  • FDC4-U200 relay – Flashing, 4 pole

     Plug-in electronic railway flashing timer relay with four change-over contacts. When the relay is activated the coil is energized with a pulse. The pulse time is adjustable with a lockable knob. The relay can also be supplied with a fixed pulse time (no knob). The relay is equipped with two LEDs which indicate the presence of power supply and the energizing of the coil. Also standard equipped with magnetic arc…

  • FDC4-U200N relay – Flashing, 4 pole

     Plug-in electronic railway flashing relay with four changeover contacts for reliable switching of very low currents (1 mA @ 5 VDC) up to currents of 10A @ 110VDC. When the relay is activated the coil is energized with a pulse, which is repeated after the fixed cycle time until the relay is de-activated. The pulse time is adjustable with a lockable knob. The relay can also be supplied with a…

  • FDG-U200 relay – Flashing, 2 solid state contacts

     Plug-in electronic railway pulsing relay with two solid state contacts in counterphase. The pulse time and interval time are equal. There is no galvanic isolation between coil circuit and contacts. The construction of the relay and choice of materials makes the FDG-U200 relay suitable to withstand low and high temperatures, shock & vibrating and dry to humid environments. No external retaining clip needed as integrated ‘snap-lock’ will hold relay into…

  • IB 200 relay – Current monitoring

     This current sensor feeds a 2 changeover relay contacts for a measured current from 16 A to 24 A. A potentiometer allows the setting of the relay pick up from 15 A to 25 A. The maximal admissible current of the shunt is 50 A, other versions are available. An 110 VDC auxiliary power supply is needed for the measure and the relay command. The electronic device is put in…

  • KCD-U200 relay – Latching , 2 pole

     Plug-in bistable railway relay with two change-over contacts. The contacts remain in the last powered position, the position is clearly visible, optional shown via a position indicator. Bistable by means of two coils and a mechanical rocker mechanism. The two separate coils are galvanically isolated. The contacts are weld-no-transfer contacts: they are mechanically forced in the same position. (more…)

  • KCS-U200 relay – Latching , 2 pole

     This relay is obsolete from January 1, 2023. Bistable railway relay with two change-over contacts. The contacts remain in the last powered position. Bistable by means of two coils and a mechanical rocker mechanism. The two separate coils are galvanically isolated. The contacts are weld-no-transfer contacts: they are mechanically forced in the same position. The KCS-U200 relay is a compact design relay connected with 2.8 x 0.8 mm fastons. The…

  • KDN-U200 relay – Latching, 8 pole

     Plug-in bistable railway relay with eight change-over contacts. The contacts remain in the last powered position, the position is clearly shown via a position indicator. Bistable by means of two coils and a mechanical rocker mechanism. The two separate coils are galvanically isolated. Standard equipped with magnetic arc blow-out for high breaking capacity and long contact life. No external retaining clip needed as integrated ‘snap-lock’ will hold relay into socket…

  • KDN-U200N relay – Latching, 8 pole

     Plug-in bistable railway relay with eight change-over contacts, for reliable switching of very low currents (1 mA@5 VDC) up to currents of 10A @ 110VDC. The contacts remain in the last powered position, the position is clearly shown via a position indicator. Bistable by means of two coils and a mechanical rocker mechanism. The two separate coils are galvanically isolated. The built-in magnetic arc blow-out ensures adequate DC breaking capacity…

  • MTDV4-U200 relay – Voltage monitoring, timer delay-on /-off, 4 pole

     Plug-in electronic voltage monitoring relay with optional delay-on and delay-off timer function and four change-over contacts. The delay time is adjustable with a lockable knob (either delay-on or delay-off, the other delay is fixed). The relay can also be supplied with fixed time delays (no knob). The pull-in voltage and drop-out voltage are both adjustable via internal screws. The relay can also be supplied with a fixed pull-in and drop-out…

  • MTDV4-U200N relay – Voltage monitoring, timer delay-on /-off, 4 pole

     Plug-in electronic railway voltage monitoring relay withfour change-over contacts for reliable switching of very lowcurrents (1 mA @ 5 VDC) up to currents of 10A @ 110VDC. The relay has optionally a delay on pull-in and/or on dropout.The delay time is adjustable with a lockable knob(either delay-on or delay-off, the other delay is fixed). Therelay can also be supplied with fixed time delays (no knob).The pull-in voltage (Uon) and drop-out…

  • NSE relay – over- and undervoltage monitoring

     This relay is obsolete from October 1, 2018. Overvoltage and undervoltage monitoring railway relay with two change-over contacts. Suitable for AC 50 Hz voltages. Auxiliary power supply necessary, either DC or AC (0...60 Hz). When the relay is activated there is a delay on pull-in. The delay time is adjustable with a lockable knob. The overvoltage and undervoltage are also adjustable with a lockable knob. The NSE-relay has a fail-safe…

  • NSR relay – over- and undervoltage monitoring, 3-phase

     This product is no longer available. Overvoltage and undervoltage monitoring railway relay with two changeover contacts. Suitable for 3-phase 400 VAC 50 Hz. Auxiliary power supply necessary, either DC or AC (0-60 Hz). When the relay is activated there is a delay on pull-in. The delay time is adjustable with a lockable knob. The detection for overvoltage and undervoltage is also adjustable with a lockable knob. The NSR-relay has a…

  • NTBBOR 400 relay – Delay-on drop-out, 4 C/O

     The NTBBOR 400 is a delay-on drop-out with negative command relay with 4 double make / double break C/O contacts (form Z). The delay is fully programmable with a dip switch from 0.25 s to 63.75 min. The access to dip switch is available by removing time delay cover. This feature prohibits frivolous field time delay setting. The plug-in design offers secure locking feature for maximum ease of maintenance (no…

  • PDF3-U200 relay – one-shot, 3 pole

     This product is no longer available. The replacement relay is the CTD4-U200. Plug-in electronic railway one-shot relay with three change-over contacts. The relay is activated by the negative going edge of a DC voltage on the input terminals. The pulse time is fixed and standard 3 seconds, other pulse times on request. The relay has two LEDs which indicate the presence of power supply and contact switching. Standard equipped with magnetic…

  • RC-19A relay – Current monitoring

     This relay is obsolete from January 1, 2023. Current monitoring railway relay with one change-over contact. Suitable for AC currents. The input consists of a ring core saturation transformer: place the wire with current to monitor simply through the transformer. Ease of installation and high continuous overcurrent possible. Protection against short circuit and low impedance. The relay is also suitable for earthfault protection. Adjusting the pull-in current for lower values…

  • RDA Resistor unit

     The RDA resistor module consists of a D-relay housing containing 4 electrically isolated resistors. This gives the possibility to use them in different electrical circuits. Housing has venting holes for optimimum temperature behaviour. The RDA can be plugged in into all D-U sockets. Maximum allowable power inside the housing is 5W. Benefits: Proven reliable long term availability easy to maintain low life cycle cost no maintenance (more…)