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IP Ratings Explained

More and more people are becoming familiar with IP ratings, however, if you want to have a quick reference, please bookmark this page so you can quickly refer back whenever you need clarification.

The IP rating system was introduced to try and provide more accurate guidelines as to what level of protection a product has.  A sales leaflet who's vague marketing simply says 'waterproof' doesn't really explain to what extent the product has been tested.  So a standard was created to give users greater information to determine the actual level of protection the device has been tested to.

The first number represent the level of protection against hazardous parts - (moving parts - solid objects)
0 = No protection
1 = Objects larger than 50mm (hands etc)
2 = Objects larger than 12.5mm (fingers etc)
3 = Objects larger than 2.5mm (tools, thick wire etc)
4 = Objects larger than 1mm (wires etc)
5 = Dust protected (does not mean 100% proof, but no harmful quantities of dust will enter to interfere with the functioning of the product)
6 = Dust tight - no ingress of any dust

The second number represents the level of protection aginst ingress of water
0 = No protection
1 = Dripping water will have no effect
2 = Dripping water will have no effect if the device is angle at 15 degrees from normal position
3 = Water spraying up to an angle of 60 degrees shall have no effect
4 = Water splashing against the device at any angle will have no harmful effect
5 = Water projected from a nozzle of 6.3mm against the device at any angle will have no harmful effect
6 = Water projected from powerful jets of 12.5mm against the device at any angle will have no harmful effect
6K = Water projected from powerful jets of 12.5mm with increased pressure against the device at any angle will have no harmful effect
7 = Ingress of water in harmful quantity shall not be possible when immersed in 1M of water under specified time and pressure
8 = Ingress of water in harmful quantity shall not be possible when immersed continuously in conditions advised by the manufacturer
9K = Protection against high pressure at close range with high temperature spray downs

A German standard created to even more accurately detail wash down protection.  The DIN 40050-9 extends the IEC 60529 rating standard. This calls for high temperature wash downs, the device must also be dust tight and comply with IP6x standards. THe IP69K test specifies the device must undergo a 80 degree hot water test at 80-100Bar pressure at a flow rate of 14-16 L/min.  The nozzle is held at 10cm away from the device at four different angles (0, 30, 60, 90 degrees) for 30 seconds. 

You might find some datasheets detail a product as 'IPx4'. This does not mean the product is not protected.  The fact the item has been tested to '4' (water splashing against the device) indicates protection against ingress of water, even though a rating for the protection against solids has not formally been assigned.  

Additionally, an item which is advised as being IP67 (immersion in water for a temporary period), does not mean the the product will be adequately protected against jets of water (IP66). In such instances some manufacturer might show an item as being IP66/IP67 rated, thus indicating it has been tested to both standards.

Please link to this page or share it via social media.

Regards the team at Selectronix

Created On  10 Sep 2015 11:25  -  Permalink

Raspberry pie anyone?

Its seems the Raspberry pie  is an ever increasing piece of pie..!

See below an article from :
Written by Richard Wilson.

The Raspberry Pi programming language, called Python, has overtaken French as the most popular language taught in primary schools, according to a survey of school pupils and parents. Most significant was the importance even parents of the very young school  children placed on learning programming. Six out of ten parents want their primary school age children to learn the coding language over French. While 75% of primary school children said they would rather learn how to program a robot than learn the modern foreign language.

The survey, which sampled 3,000 – ranging from five year-olds to parents – was commissioned by Ocado Technology.

More worrying is that the survey also found that secondary school pupils were less enthusiastic about learning computer programming , and over half saw a computer science GCSE is seen as an ‘easy option’ in their schools.

Paul Clarke, Director of Technology at Ocado, writes:

"Unfortunately this is an example of a wider and more serious problem that we face in terms of computer science in the UK not being treated as the serious engineering discipline that it undoubtedly is. The irony is that this is at a time when we are facing a massive shortfall in the number of software engineers and IT specialists who will be required to help build out the UK’s digital economy.” - See more at:

Clarke believes the government should make computer science GCSE mandatory like maths and English.

Online shopping firm Ocado has also created Rapid Router, a free coding teaching resource which is being used by over 30,000 schools, pupils and teachers.

It is also releasing a series of videos by Computing specialists where they provide fellow teachers with tips on delivering the Computing curriculum.

The research was based on three online surveys conducted on behalf of Ocado Technology by OnePoll in August 2015:

  •  1,000 5-11 year old primary school pupils from England
  •  1,000 parents of school children from England
  •  1,000 secondary school pupils from England
- See more at:

Let's hope the Raspberry range expands and more people have a need for our Raspberry Pie enclosure:

Au revoir!

Created On  3 Sep 2015 17:17  -  Permalink

How many in stock?

A question popped up this morning about our new e-commerce web site:  
"your site says 'in stock', but how do I know how many you have"?

So for a few reasons we decided to not show how many of a particular part we have in stock.  
But you can simply enter in the quantity you require and if we are unable to service that demand, the system will tell you.  Our e-commerce site does not allow items to be on back order - you can only order a quantity that is in stock.
Of course you can click the 'live chat' facility and an available agent will answer your questions and let you know how many we have, or even if & when additional stock coming in... !!

Searching our web site:
Simply type in the search box - either a descriptive word or the part ref (or even just part of it).

For example: - if you were looking for a Vent.
Typing 'vent' will bring up any product on our site that has the word vent in its description.

Or if you were looking for a connector but you were unsure of the full part ref; just enter in the bits you do know.

Imagine you are looking for part RCP-5SPFFH-SCU7001 - of course typing that in full will get you straight to that part.
But typing in 'PFFH' will bring up all parts which contain that string of characters.
This is a great way to search for other similar parts...

Search by Manufacturer
If you do not know the part ref at all and have no idea how to word the description, then you're going to struggle!!
You can simply drill down through the directory structure to hopefully a small 'ish' range of parts.
Not forgetting you can click the 'search by manufacturer' button at the bottom of each page.  Then click through until you find what you need.
Really the best thing to do in this situation is to talk to an agent via our live chat facility.  It'll save you so much time.  

Live Chat
Simply click the chat icon to speak to someone. We can send you links to click to get straight to the part you need as well as answer any questions you have to help you decide on the best part for your application.  

If you find a link or data sheet is incorrect or failing, please let us know. Thanks in advance if you do this :)


Created On  3 Sep 2015 13:46  -  Permalink

Modern problems for a taxi driver

Modern problems for a taxi driver There is more to being a taxi driver than just knowing how to get to "Georges Street please", see here an article posted on

A ‘Safeguarding and Safety Handbook’ has been offered to Manchester’s 6,000 taxi drivers. The handbook was launched at the Manchester Taxi Aid Roadshow – an event aimed at helping drivers get the most out of tourism – at Manchester Central on Monday, August 10. All new drivers will also receive a copy of the handbook, while questions about safeguarding will go on to be included in the city council’s skills test, which all prospective new drivers must pass before receiving a taxi licence.

The handbook provides advice about a range of safeguarding issues such as child sexual exploitation, human trafficking, female genital mutilation, domestic abuse and hate crime. It also tells them how to deal with suspicious package and the signs to look out for that passengers might be involved in terrorism.

It provides examples of suspicious behaviour to look out for, such as a driver picking up a young person who looks drunk and gets into the car with a visibly older person who asks for them to be taken to a hotel. Drivers are also given tips about making sure they stay safe while on the road, as well as advice about disability issues and etiquette while dealing with the public.

Councillor Nigel Murphy, Manchester City Council’s executive member for neighbourhoods, said: "We’re working closely with the police to make sure our city is as safe a place as possible, and having a well-informed team of taxi drivers, who are out and about all the time, can only help us achieve that aim.

"Thousands of drivers work across our city at all hours of the day and night, and some of them may occasionally see things which give them cause for concern. This handbook is about making sure they’ve got the information they need so they know when to report something, and to make it as easy as possible for them to do should they need to do so.”

And Greater Manchester Police Chief Inspector Laura Marler, said: "This roadshow is a great opportunity for Greater Manchester Police to meet with the many businesses and attractions across the borough. We are also going to deliver essential crime prevention advice and launch the new driver safe guarding handbook for Manchester’s private and Hackney carriage drivers.

"The handbook has been developed to raise awareness about reporting crime and is an opportunity to encourage drivers who are the eyes and ears of our community to report intelligence and any suspicious activity to police.”

Created On  28 Aug 2015 12:49  -  Permalink


Welcome!! Welcome to our blog!!
We shall post here the comings and goings of hopefully some vaguely interesting happenings! 
Be it a new product or just weird stuff that happens...
We will endeavour to not make this a new product launch mechanism, but hopefully a blog which talks about other issues within the industries we serve.
So for now, take care and please link this blog via your Twitter or other social media, so we can all benefit from the dark arts that are within Google towers!

Created On  28 Aug 2015 12:14  -  Permalink