LED light source replacing signal bulbs

The MA-IFF light source is a fully compatible replacement for the signal bulbs in the railway and road signals of railway equipment. Thanks to its long life, good visibility and additional functions it is a cost-effective long-term solution.

Its most important feature is that it is a modern LED light source with an expected life of about twenty times that of a bulb, so disruptions caused by burnt-out bulbs and the considerable operating costs are reduced to a fraction.

Being compatible, it is easy to install at little additional cost, because

• the lamp head does not need to be replaced – the light source fits in place of the bulb holder,
• in most cases the lamp circuit does not need to be modified, as its luminous flux and flashing characteristics in the light and dark periods meet the requirements for bulbs.

In some applications (e.g. station level crossings) the rectifier board supplied with the light source and a fuse of higher rating have to be installed.

The product is well protected against damage and vandalism: an acrylic protective plate is fitted on the side facing the optical lenses, so if the lenses of the signal are broken, the LEDs behind the acrylic plate still show the correct colour.

Internal electrical protection ensures that it is not damaged by reverse connection or by input voltage transients.

Special functions increase the safety of the application:

• in case of sustained overvoltage it switches off and opens the circuit, giving a clearer indication of short-circuit type failures
• if the emitted light intensity falls below the minimum defined in the standard, it opens the lamp circuit and switches itself off, indicating an increase in external resistance or a possible internal failure

The light source fully meets the requirements of the railways.