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

Timer and Instantaneous relays

Timer Relays

A Timer Relay is a combination of an electromechanical output relay and a control circuit. The contacts will open or close before or after a pre-selected, timed interval.

Time delay relays are initiated or triggered by one of two methods:

  • Application of input voltage/auxiliary supply will either initiate the unit or make it ready to initiate when a trigger signal is applied.
  • Applying a trigger signal is used to initiate the unit after input voltage has been applied. This trigger signal can either be a control switch (dry contact switch) or a power trigger (voltage).

Instantaneous relays

An Instantaneous Relay is one in which there is no time delay provided intentionally. As the current coil is an inductor, there would be a certain delay to reach the current in the coil to its maximum value.

There is also some time required for mechanical movement of the armature in the relay. These time delays are inherent in the instantaneous relay but no other time delay is intentionally added. These relays can be operated in less than 0.1 sec.

 

  • D8-U200 relay module – 8 pole

     The D8-U200 relay module is a form, fit and function solution to replace all kind of contactors with a maximum of 8 contacts. The module consists of an 8-pole relay, screw or spring clamp terminal connections and a bracket to fasten the module. By applying the D8-U200 relay module all specifications of the standard D8-U200 relay are valid. The screw or spring clamp connections are made on the front panel…

  • TDD4B2-U200 relay – 2 pole delay-on and 4 pole instantaneous

     Plug-in electronic railway timer relay with four instantaneous change-over contacts and two time delayed change over contacts. When the relay is activated there is a delay on pull-in for the time delayed contacts. The timer relay has a fixed customer specified delay time, but can also be supplied with an adjustable delay time (with lockable knob). The delayed contacts are weld no transfer contacts. The relay is equipped with two…

  • TDDB-U200 relay – Timer, delay-on, 4 pole

     Plug-in electronic railway timer relay with two instantaneous change-over contacts and two time delayed change-over contacts. When the relay is activated there is a delay on pull-in for the time delayed contacts. The delay time is adjustable with a lockable knob. The relay can also be supplied with a fixed time delay (no knob). The relay is equipped with two LEDs to indicate presence of power supply and energizing of…

  • TDDB-U300 relay – Timer, delay-on, AC input, delay on 4 pole

     Plug-in electronic railway timer relay with two instantaneous change-over contacts and two time delayed change-over contacts. When the relay is activated there is a delay on pull-in for the time delayed contacts. The delay time is adjustable with a lockable knob. The relay can also be supplied with a fixed time delay (no knob). The relay is equipped with two LEDs to indicate presence of power supply and energizing of…

  • TTBCA 200 relay – Delay-on pull-in, instantaneous

     This time delay relay has 2 change over simple break contacts with 1 instantaneous contacts and 1 delayed contacts on pull-in fully programmable (with dipswitch) from 0.5 seconds to 4 seconds. 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 wires need to be disconnected or…

  • TTBCA 400 relay – Delay-on pull-in, instantaneous

     This time delay relay has 4 changeover simple break contacts with 2 instantaneous contacts and 2 delayed contacts on pull-in fully programmable (with dipswitch) from 0.5 seconds to 4 seconds. 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 wires need to be disconnected or other…

  • TTBCR 200 relay – Delay on drop-out, instantaneous

     The TTBCR 200 time delay relay has 2 changeover simple break contacts with 1 instantaneous contacts and 1 delayed contacts on drop-out fully programmable (with dipswitch) from 0.5 seconds to 4 seconds. 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 wires need to be disconnected…

  • TTBCR 400 relay – Delay on drop out instantaneous

     The TTBCR 400 time delay relay has 4 changeover simple break contacts with 2 instantaneous contacts and 2 delayed contacts on drop-out fully programmable (with dipswitch) from 0.5 to 4 seconds. 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 wires need to be disconnected or…