I think this is likely, though it's impossible to do better than 'guess' with so little context to work with. No doubt the rest of your context would make it clearer.

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Note added at 2 heures (2014-10-22 11:47:59 GMT)
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Well, what is a description of...? And how does the term appear with the other things in this product description.

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Note added at 4 heures (2014-10-22 13:52:44 GMT)
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Usually, I'd expect it to mean 'contacts that make something else reverse' — like Florence's suggestion of reversing the direction in whcih a motor rotates.

Less likely IMHO is the idea of 'contacts that reverse themselves' — whatever that might mean.

In general electrical usage, one might expect a 'reversing contact' to change over the way 2 things are connected; so if 1 is initially connected to A and 2 to B, then the reversing contact might connect 1 to B and 2 to A, for example.

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Note added at 5 heures (2014-10-22 14:39:03 GMT)
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To answer Didier's comment: a contact used for reversing would be more likely in EN to be called a 'reverse contact' (cf. 'reverse gear') — 'reversing' is what a vehicle might do, but the use of the '-ing' form here definitely suggests it is a case of reversing some situation. All this is of course, only speculation!

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Note added at 22 heures (2014-10-23 07:49:16 GMT)
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Ah, your new context does seem to suggest these may be contacts that make differently according to the direction of the train; so it is not 'to make it go the other way', but rather, 'the result of detetcing that it is going the other way' — so it might mean (not sure!) 'contacts that change when the train is reversing' (note of course there is no real sense of 'reverse', it is simply going in one direction or the other, neither specifically being 'forward' or 'reverse')

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Note added at 22 heures (2014-10-23 07:50:39 GMT)
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I don't see anything particularly (in the text given here) to indicate that, save for that 'elects' — but that could just be a simple typo for 'selects'.