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

Railway relays

Mors Smitt offers a wide range of highly reliable relays for on-board and trackside applications.

All our relays are designed by railway engineers to outlive the life time of a train.
Up to date more than 10 million relays are installed world wide.

Relay Selection Guide

Relay Knowledge

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Railway Relays Brochure

White paper: Advantages of relay technology in rail vehicles

White paper: Reliable relay technology in rail vehicles

White paper: Programmable Logic vs. Electromechanical Circuits

1-Shot & 2-Shot Relays
1-Shot & Instantaneous
After Market Relays
In the After Market Relays category, you will find products designed as spare parts for existing systems. If you are working on a new project, we recommend using the upgraded versions of these products, which offer higher reliability and modern technology. You can find these improved variants in other categories here.
Electronic Timer Module
Flashing relays
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.…
Latching relays
A latching relay is a two-position electrically-actuated switch. It maintains either contact position indefinitely without power applied to the coil. It is controlled by two momentary-acting switches or sensors, one that 'sets' the relay, and the other 'resets' the relay. The latching relay maintains its position after the actuating switch has been released, so it performs a basic memory function. There are two kinds of latching relays: One latching type…
Miscellaneous
Monitoring relays
A Monitoring Relay is a protective control device. The basic functions are to receive input signals, monitor and determine them, and output an alarm signal if a set value (threshold) is reached. Monitoring Relays monitor power supplies (voltage, current, power, phase), temperatures, and other analog signals and detects abnormalities in machines and equipment by determining values against alarm thresholds. Time Chart Voltage monitoring relay with optional delay-on and delay-off timer…
Obsolete Railway Relay Sockets
The production of products in this category has been discontinued, but we offer suitable replacements for most of them. Specific alternatives and detailed information can be found in the product details. If you’re unsure about the right replacement, feel free to contact us.
Obsolete Railway Relays
The production of products in this category has been discontinued, but we offer suitable replacements for most of them. Specific alternatives and detailed information can be found in the product details. If you're unsure about the right replacement, feel free to contact us.
Sockets
Sockets for Mors Smitt 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…
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…