DEAL OF THE MONTH: Eaton GT Range- Mini Contactors and Overloads

Everyday Solution for Common Applications

With easy access control terminals, flexible mounting holes and easy DIN rail installation, the Eaton GT Range of contacts and overloads are the perfect solution to your commercial construction and simple machinery applications.

Find out how the GT range can be beneficial to your next project.

Eaton GT Range ContactorsGT Range Contactors

The GT Range of contactors feature compact, efficient designs that cover a comprehensive current range. Built-in auxiliary contacts are standard on every frame and a broad range of control voltages are available. Efficiently designed, easy to install and economically priced the GT contactors are an ideal solution for a variety of applications up to 132 kW.


  • AC-3 contactor ratings to 220A
  • AC-1 contactor ratings 260A
  • Built-in Auxiliary Contacts on all frames
  • Wide range of accessories
  • IP20 protection
  • DIN-rail or panel mount
  • AC control voltages from 24 V to 400 V 50 Hz, 440V 60Hz
  • Electrical life-500,000 operations
  • Mechanical life- 5 million operations
  • Large ambient operating temperature range: -5°-40°C

Standards and Certifications

  • IEC EN 60947
  • CE Marked
  • CCC
  • RoHS

Shop GT Contactors here

GT Range Overload Relays

GT Range RelaysThe GT line of Thermal Overload Relays features 7 frame sizes that will protect any motor with any FLA rating from 0.1 to 200 A. The overloads are designed to directly couple with the GT contactor line to create integrated across-the-line starters for maximum space-savings and reduced installation costs.


  • Ambient temperature compensated
  • Large ambient operating temperature range: -5°-40°C
  • Phase loss protection available
  • 1.5:1 Adjustable current range: ±20%
  • Visible trip indication
  • 1 make NO and 1 break NC auxiliary contact as standard
  • Test to trip function
  • Trip free release
  • Selectable manual/auto reset
  • Direct-mount to GT contactor range
  • IP20 protection
  • Screw terminals

Standards and Certifications

  • IEC EN 60947
  • CE Marked
  • CCC
  • RoHS

Shop GT Overloads here

Now is the time to buy!

You’ve read the details, now try the Eaton GT Range for yourself!

Click here to start shopping!



Emergency Stop Buttons- Chint & EMAS

With Great Technology Comes Great Responsibility

Question: What do these four things have in common?

'Oblivion' at Alton Towers


  • A wrapping machine at Cadbury’s which can wrap over  64,000 chocolate bars per hour.
  • A ride at Alton Towers that can be ridden by over 30,000 people in a
    single day.
  • An escalator in Liverpool One shopping centre.
  • Finally, a luggage conveyor belt at Manchester Airport.

Answer: All of the above must have an emergency stop device installed in order to avert actual or impending danger- ‘Supply of Machinery (Safety) Regulations 2008’

Therefore when it comes to designing, building or maintaining machinery, it is vital to use emergency stop systems that promise the best quality and reliability.

The range of Emergency Stop Buttons from Chalon Components promises just that.

Chint & Emas Pushbutton Range
Image result for NP2 push buttons emergency

The Chint NP2 pushbutton and EMAS control stations range combines the perfect features for superior reliability and safety, as well as making them easy to install and use.

Let’s take a look at the features to see how our range of pushbutton stock could benefit your next project.


Chint Enclosed Emergency Stop Station- 1 N/C

The Chint Emergency Stop Station is a complete component, ready to be installed into a project.

Chint Enclosed Emergency Stop Button Station


  • 40 mm diameter mushroom head
  • Twist to release mechanism allows for quick resetting in an emergency situation
  • 1 Normally Closed Contact
  • IP40 rated
  • An extra cotact block can be added
  • Eye-catching colour combination for easy identification
  • Robust enclosure
  • 66mm W x 66mm L x 79mm D

This station is fully assembled in its own enclosure therefore  takes a lot of fuss out of installation, so is great for quick maintenance or repairs for machinery. Furthermore, the button’ is easy to identify, even in a crisis situation, thanks to its eye-catching colour combination.

Shop Emergency Stop Stations here

Three Button Station- UP/DOWN and EMERGENCY STOP

A station with a simple format and three simple functions.

FeaturesThree Button Station

  • 3 flush buttons- White, Black and Red for easy identification
  • 2 normally open and one normally closed contacts
  • Anti-moving operating part
  • Dual functions of circuit switching for reliable contacting
  • Independent NC and NO contacting assemblies for convenient replacement

With a robust enclosure and high quality components, this station has a lot to offer in terms of reliability and durability.

Shop Multi-Button Stations here

Emas Aluminium Control Box for Emergency Stop Button

An aluminium box providing the highest amount of protection when used with the correct pushbuttons


  • IP65 protection
  • Durable aluminium enclosure
  • Strong resistance against mechanical strokes
  • Maximum strength for environmental conditions

Shop Emas  Control Boxes here

Emergency Stop Labels

Did you know we also make Emergency Stop Labels? Why not pick up your Emergency Stop Buttons and labels same day? Our service is quick and easy, saving you time and money.

Order your Emergency Stop Discs here


Stop Danger, Switch on SafetyImage result for emergency stop button sign

The Chint NP2 range is built to not only meet, but to exceed safety regulations. With features focused on durability, reliability, and easy identification, the NP” range are an excellent choice as a safety mechanism.

In conclusion, with the winning combination of affordability and high quality, why choose anything else?



Shop our full NP2 range :

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New Generation WEG CWB Contactors

Technology and Reliability In a Compact Size

The CWB range from WEG are built to be compact yet robust in order to be a highly useful, reliable and energy efficient component.

Could the CWB contactor range be beneficial for your next project?

In this post we will explore the main features of this multi-purpose product.

WEG CWB Contactor



Benefits at a Glance

  • Compact- can save 18% more space
  • Low-consumption coils- 5.8 W at at 24 dc
  • Built in auxiliary contacts- 1NO and 1NC
  • Easy identification of the control voltage
  • ‘Zero-Width’ mechanical interlock
  • Easy connection busbar for quick mounting.
  • Choice of up to six auxiliary contacts
  • Compatibility of accessories with the whole CWB line
  • Fast mounting on DIN rail 35mm or with screw

Compact, flexible use and easy installation


The CWB range is available in two sizes:

45mm wide: available up to 38A (185kW at 380V AC-3)

54 mm wide: available from 40-80A (37 kW at 380 V AC-3

Did you know:The compact size of the CWB contactors can save around 18% more space compared with traditional solutions?

Built-in Auxiliary Contacts 


Close up of Auxiliary Contacts- 1NC and 1NO

1NO + 1NC










The contactors contain two built-in auxiliary contacts (1NO + 1NC). This enables the application of CWB contactors to be more flexible in most automation systems and will optimise the internal space for electrical panels. The contactors also feature a front slot for passing control cables, which consequently can reduce or even eliminate the need for routing control cables. This is achieved through the side or front of the contactors and provides a more organised assembly.

Contactor Coil Operated on AC or DC

The range is available in a variety of voltages in only two coil versions- one for AC and another for DC, for the whole line of contactors from 9-80A. The contactor coils are easy to replace (AC coils in currents from 9-80A and DC coils in currents from 40-80 A and have a visual indication of the coil voltage.

‘Zero-Width’ Mechanical Interlock

WEG have developed a new mechanical system which ensures compact and safe mounting without the use of tools.  This interlocking system avoids adding side space and it is possible to mount reversing starters of up to 80A.

Easy Access Power

The range features a fast front access for safe and easy installation as well as measurements and preventive or corrective maintenance of starters.


Compact Mounting of Surge Suppressor Blocks

Surge Suppressor Block Visual Demonstration

Surge Suppressor Blocks









In addition, WEG has also developed surge suppressor blocks specifically for this range of contactors. These ensure limitation or even completely eliminate the undesired interference that can occur when opening the contactor coil. The suppressor blocks are easily installed on CWB contactors without the need for tools.

Easy Connection Busbars and Connectors

CWB Busbar Connections diagram

CWB Busbar Connections

The CWB range aims to reduce mounting time and prevent errors with their modular and flexible easy-connection busbars and connectors. This easy connecting system allows the mounting with the WEG manual motor protectors and overload relays to form compact robust direct starts, reversing and non-reversing starters, as well as star-delta starters.


Safety Against Accidental Contact

The power and control terminals of the CWB contactors have a degree of protection that completely ensures the safety against accidental front contacts.

Safety-Related Applications

The CWB line allows the combination of special contactors and specific order to comply with the requirements of IEC/EN 60947-4-1 Annex f (Mirror Contacts) and IEC/EN 60947-5-1 Annex L (Mechanically Linked Contacts and NR12 regulatory standard).

Why Choose WEG?

With branches in 29 countries, manufacturing plants in 12 countries, operations in 100 countries and a portfolio of 460 product lines, it’s safe to say that WEG have established themselves as one of the leaders in electrical components and solutions. Furthermore they have appeared in the Forbes list of 100 largest small global companies of the world and finally  it has been ranked as the 9th most competitive company on the American Continent. They are renowned for the quality and reliability of their products.

Here at Chalon, we have been selling WEG products for many years and have trusted their quality components in our own panel building products. The quality and reliability of their components are impressive and thus are clear proof of why they are globally successful.


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MCB Diagram

Fuses, MCBs, RCDs and RCBOs – what is it all about????

Fuses, MCBs, RCDs and RCBOs – what is it all about????

OK so they are all there to protect, but what is the difference and what do they do?


Firstly fuses and MCBs – that is miniature circuit breakers – they both ‘blow’ when current is exceeded, but an MCB can be reset after the fault is fixed, a fuse must be replaced.
A fuse is basically a piece of wire between two contacts to make a circuit. When current flows heat is produced and the wire gets hot. If too much current it produced the wire melts and the circuit is broken. There is nothing you can do you must replace the fuse.
A miniature circuit breaker on the other hand uses an electromagnet to break the circuit if the current is exceeded. It also has a toggle on the front so that it can be reset. The MCB is generally more reliable than a fuse and reacts quicker.
The Chint range of MCBs are available from stock at Chalon Components in all curves and Amp ranges.

So that is a fuse and a miniature circuit breaker what of an RCD?

Well the fuse and the MCB will protect equipment and wiring, they will not protect people. An RCD is designed to protect people.
The residual current device monitors the current that goes down the live and neutral cables. If the circuit is healthy then the current going down the live cable will be the same as that coming back through the neutral cable. This means that the amount of current going down the earth cable will be nil and all is well.

NE2 Metal SocketIf some of the current leaks from the live to the earth the RCD will detect the difference between the live and neutral and trip. So if you are gardening and accidentally ‘strim’ the cable instead of the grass an RCD protected socket would detect the difference in current flow and trip out.
The Chint RCD protected sockets have a 30mA trip so although they will allow a small amount of leakage they will greatly reduce the risk of fatality. The plastic version can be used as a direct replacement for a standard double socket.


If sockets are fitted outside it is preferable to fit an RCD into the distribution board feeding the sockets. Great, but you’ve not got any space in the board as it is full of MCBs. Enter the RCBO – in short a combined MCB and RCD. This is the answer to the problem as they now come in single module width to fit into distribution boards.

NB3LEU RCBOThe MCB side of the unit handles the current and will trip based on a over-current whilst the RCD side monitors the earth leakage and will trip if it detects an imbalance of the live and neutral. The other great advantage of using the RCBO is that only one circuit is affected in the event of a trip – not the whole board as would be the case if using an RCD as an incoming switch on a distribution board.

Chalon Components Ltd stock the Chint NB3LEU RCBO in both B and C Curve up to 40amps.


Distribution Boards, Consumer Units or Fuseboxes

Distribution Boards, Consumer Units or Fuseboxes
The New Rules

It doesn’t matter what you call it, the box is now subject to British Standard BS EN 61439-3. Distribution boards intended to be operated by ordinary persons (DBO) and The third amendment to BS 7671:2008 (IET Wiring Regulations Seventeenth Edition). This came into effect on 1 July 2015 and requires consumer units and similar switchgear assemblies in domestic premises to have a non-combustible enclosure.
The wording of the regulation is this:

421.1.201 Within domestic (household) premises, consumer units and similar switchgear assemblies shall comply with BS EN 61439-3 and shall:
(i) have their enclosure manufactured from non-combustible material, or
(ii) be enclosed in a cabinet or enclosure constructed of non-combustible material and complying with Regulation 132.12.
NOTE 1: Ferrous metal, e.g. steel, is deemed to be an example of a non-combustible material.
NOTE 2: The implementation date for this regulation is the 1st January 2016, but does not preclude compliance with the regulation prior to that date.


Simple really, more and more fires have been found to have been found to involve consumer units. Whether that be poor workmanship or lack of maintenance, the most important thing is that if the enclosure had been non combustible or metal it would have contained the fire. Whereas the previous thermoplastic ones would melt and allow the flames to escape as these pictures show.

Damaged House boards

Does this apply to outbuildings, such as garages or sheds? Well the regulation actually uses the term ‘premises’ which brings us to the question what is the definition of ‘premises’ and what does it include? The regulation was primarily introduced to cover the interior of a house, but it is good practice to question the proximity of the outbuilding to the main house. Is it an integral garage or attached to the main building and of course does it contain anything combustible.
Regulation 421.1.201 is not intended to apply to a consumer unit that is not within a building, such one mounted outdoors i.e. the outside of a building.

But if in doubt use a metal clad enclosure!!


Damaged BoardsAll Chint Distribution Boards and pre-Assembled Garage and Shower Units comply with the Regulations. The boards have certification by 3rd Party Test Houses, copies of which are available on request.

Chalon Components Ltd are pleased to be able to offer the full Chint NX3 range of Metal consumer units from 3 ways to 36 ways, download the full brochure here.

Emas Potentiometer

Emas Potentiometer

Emas Potentiometer

Well executed 22mm Industrial Potentiometer It’s not new or groundbreaking its just well executed, the Potentiometer designed and made by EMAS.

Gone are the days of buying an electronics pot and 10 turn graduated dial from a Catalogue company and making something up, then soldering wires to it….there’s 15-25 mins wasted.

EMAS UK we stock the 1K, 5K, and 10K versions in the 100’s, single turn dial, 22mm monoblock style, standard 3 wire terminal clamps on the rear, easy to connect and use…save money and time….it just makes “cents”

Purchase here

Emas Potentiometer