Colour-coded pilot lamps enable quick & easy installation

20th April 2015
Posted By : Siobhan O'Gorman
Colour-coded pilot lamps enable quick & easy installation


To enable quick and easy installation and maintenance, Switchtec has introduced a range of pilot lamps which feature coloured terminals on the underside that are ‘coded’ to match the colour of the LED lamp on the ‘outside’. The SCL pilot lamps are available in the ubiquitous 16 and 22mm diameters for panel use.

Aimed at OEMs, CEMs, panel builders and equipment manufacturers, the lamps are available in different voltages to cover a wide range of applications, these being 12 and 24VDC and 110 and 240VAC. For versatility the pilot lamps are available in three versions: the ‘standard’ PL16 and PL22, the PL16-AI and PL22-AI, which incorporate anti-interference technology, and the lamp test version, PL22-LT. Due to their nature, LEDs can illuminate at very low voltages and when used in control panel applications, they can exhibit such false illumination as a result of residual or transient voltages. The anti-interference technology used in the PL16-AI and PL22-AI blocks these low level voltages and prevents false, and potentially dangerous, illumination.

Differing from the standard PL22 LED pilot lamps, the PL22-LT incorporates a third connection terminal that is used to test the LEDs in situ without having to energise the whole panel. This feature is particularly useful when a panel’s LEDs have to be tested on a regular basis.

All versions are available in the high visibility ‘pure’ colours of red, yellow, blue, green and white. Of course, with their LED technology the lamps consume much less power than incandescent types and have a very long life of 30,000 hours.

Manufactured from a high quality flame-retardant ABS material to withstand harsh conditions, the SCL pilot lamps feature a vibration resistance of 10 to 2000Hz and an ambient temperature rating of -5 to +40°C. A high ingress protection rating of IP65 is achieved when deployed in a panel. CE marked, the lamps are supplied complete with locking nut and Ealing gland.

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