Corporate| Railway | Industry

British Rail relays


Mors Smitt manufacture the full range of British Rail equivalent relays including AC & DC coils, instantaneous, gold contacts, safety critical, push to test relay button, timer/time delay, and flashing.

These relays can be found throughout Rolling Stock vehicles including locomotives, diesel multiple units (DMUs), electric multiple units (EMUs) and light rail trams. Applications include circuits involved with lighting, doors, brakes and alarms.

In addition to supporting Mors Smitt product installed on existing Rolling Stock vehicles we also manufacture the equivalents to installed old relays where manufacturers/suppliers have disappeared or there's the perception that the existing supply-chain has lost interest in support.

Here, we summarise the defunct manufacturers and/or parts that we have so far identified and which there are Mors Smitt equivalents.

Manufacturer name(s): Square-D, Schneider
Product group name(s): Class 7001, 7008, 8501, 8508, 9050
Example part number(s): AO10E, HO10E, DDO-22, DEO-42, DO-42, DO-22, DO-64, GDO-40, XDO-40
Notes: pneumatic timer, instantaneous

Manufacturer name(s): Enbray, Bonar Bray, E N Bray
Product group name(s): Q series
Example part number(s): 2W4DP100-63U, 132X-3010B, Q 0 1 S - 3/11 - 110, 132-3010B,
Notes: generally instantaneous relays

Manufacturer name(s): PED, BLP, Dialight
Product group name(s): 63, 26, 59
Example part number(s): 25D04C09A, 63 002 373 331
Notes: generally instantaneous relays

Manufacturer name(s): Londex
Product group name(s): LF, ML, Topaz
Example part number(s): TIM-MK.2/0-60M/110VAC
Notes: Time delay and instantaneous relays

Manufacturer name(s): Agastat
Product group name(s): 7000 series
Example part number(s): 7012, 7022, 7032, 7010, 7012WC
Notes: time delay relay usually with rotating dial adjustment

Manufacturer name(s):
MTE Components Ltd
Product group name(s):
Example part number(s):
4N8 4R, 4N8 8R
Notes: instantaneous relays, sometimes with external resistor fitted (seen in photo)


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Mors Smitt B.V.
Vrieslantlaan 6
3526 AA Utrecht
The Netherlands
T: +31 30 288 1311
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21/F., 9 Des Voeux Road West
Sheung Wan, Hong Kong
T. +852 2343 5555
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6 Anzed Court
Mulgrave,VIC 3170
T: +61 (0)3 8544 1200
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2 Rue de la Mandinière
72300 Sablé-sur-Sarthe
T: +33 243 92 8200

Mors Smitt Technologies Inc.
1010 Johnson Drive
Buffalo Grove, IL 60089-6918
T. +1 847 777 6497
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Graycar Business Park
Barton under Needwood
Burton on Trent
DE13 8EN
United Kingdom
T: +44 1283 357263
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Zhongshan, P.R. China
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Bangaluru, India

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