Utility Grade Protection Relays

Reliable relays for on-board and trackside applications

6 decades of reliability, knowledge, quality and excelence

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Mors Smitt Relays for Railway

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. 
Instantaneous Relays
No intentional time delay. Any delay that occurs is due only to the coil’s inductance as the current rises to its maximum.
Timer Relays
Combination of an electromechanical output relay and a control circuit. The contacts will open or close before or after a pre-selected, timed interval.
Latching Relays
Two-position electrically-actuated switch. It maintains either contact position indefinitely without power applied to the coil.
Monitoring Relays
Protective control devices. Functions are to receive input signals, monitor and determine them, and output an alarm signal if a set value is reached.
Sockets
Suitable for general railway applications with a space
saving design.
Miscellaneous
Compact plug-in diode and resistor modules for demanding rolling stock rail applications.
After Market Relays
Certified aftermarket relays offer reliable drop‑in replacements to extend service life of existing rail vehicles.
Obsolete Railway Relays
Legacy railway relays no longer in production, supported with documentation to aid maintenance and replacement planning.
Obsolete Railway Relay Sockets
Discontinued sockets for railway installations. Support maintenance, service, and replacement strategies.

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Our components and systems are compliant with all relevant standards

Mors Smitt products are designed and compliant to the strictest railway directives.
EN 50155 – European Standard for Electronic Equipment used on Rolling Stock

IEC 60571– International Standard for Electronic Equipment used on Rolling Stock with minor deviation equivalent to EN 50155

IEC 61373 – Shock and Vibration for application used in Rolling Stock

EN 50125 – Environmental Condition for Equipment in Rolling Stock

EN 50124 – Isolation condition
Basic requirements clearance and creepage distances

EN 45545 – Fire and Smoke

NFPA130 / ASTM E - Fire and Smoke criteria used in American Market

Mors Smitt is IRIS certified

IRIS (International Railway Industry Standard) Certification™ aims to improve the quality and reliability of the rail products through the supply chain by implementing a global system for the evaluation of companies supplying the rail industry. Mors Smitt is IRIS certified based on the international standard ISO/TS 22163.
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