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Schurter CHS Capacitive Switch

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CHS Capacitive Switch that can be Installed in a Hidden Way

• Designed for use behind all non-conductive materials where openings in the user interface are not desired
• Provides the designer with a lot of freedom in the design of the user interface
• Highest reliability and service life
• RGB area illumination

Conventional switches inevitably require mounting holes in the user interface. Not so with the new Schurter CHS. CHS stands for “Capacitive Hidden Switch”. They can be mounted hidden behind the surface of non-conductive materials and are therefore invisible. This approach allows completely new possibilities for designing user interfaces that ideally meet the requirements of specific applications.

With capacitive switches, an electric field is built up on the user surface of the sensor. This technology is used to design a switch with the Schurter CHS that no longer requires direct sensor contact with the finger to trigger. The electrical field change required to trigger the switching process is still achieved even if a non-conductive material (glass, plastic, wood, or similar) is inserted between the sensor and the finger.

Use in Highly Sensitive Environments:
The new CHS is simply glued behind a wide variety of non-conductive materials and thus enables the construction of control elements for devices (medical technology, food industry) where hygiene plays a major role. Since there are no holes or slots created by the installation and the switch also has no moving parts, potentially harmful microbes have no possibility to “settle” on the user interface. This means that materials can be chosen that are particularly easy to

Sensitivity Adjustable:
The SCHURTER CHS is programmed as standard so that it does not trip in the event of field changes caused by liquids or minor wiping contact. This is only done by precise touching of the switching surface. However, adjustments can be made here at the customer’s request. This applies in particular to the thickness of the material behind which the switch is bonded. As standard, the sensitivity is designed for a glass thickness of up to 2 mm.

Designer’s Dream:
Switches are always a challenge for industrial designers. Their installation in the user interface often “disturbs” the appearance and structure of the same. The desire for an invisible switch is therefore great, because with it one no longer has to make compromises and is to a great extent free in the design.

Available in 3 Variants:
The new SCHURTER CHS is available in three different variants.
• CHS 1 comes without illumination and is with a mounting depth of less than 6 mm the optimal solution for space constrained designs.
• CHS 2 provides optical feedback. The RGB lighting can be used as a design element.
• CHS 3 is the potted version with lighting for demanding use in harsh environments.


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E-T-A Add-on Modules for 3120-N Circuit Breaker / Switch Combination


Easily mounted add-on modules are available for undervoltage release, magnetic trip, remote trip and auxiliary contact function.

By default, the undervoltage release modules are electrically connected to the main circuit. They can also be supplied with terminals separated from the main circuit if necessary. They allow easy and costeffective realisation of safety circuits.

The magnetic trip module trips the circuit breaker/switch combination at overload currents from four times rated current within milliseconds.

Click for More Information →  3120-N New Generation


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E-T-A Push-In Terminals for Circuit Breaker / Switch Combination 3120-N

E-T-A is the first manufacturer in the world to launch a circuit breaker/switch combination with push-in connection technology – the 3120 N…-PT. This design allows the quick, easy, and reliable connection of conductors. There are no tools required. The conductor can very easily be pushed in because of the special spring contour. This reduces wiring times and prevents fatigue symptoms.

The connection will withstand harsh shock and vibration conditions due to the high surface pressure of the contact spring that is made of a special spring steel. This type of connection is 100% protected against brush contact.


Click for More Information →  3120-N New Generation


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Hylec 36-Pole PCB Terminal Block for OEM Applications

Professional rising clamp terminals with 2 cable entry, rated 250V/24A. Snaps into different lengths – ideal for R & D work and short production runs

A new 36-pole strip-style PCB terminal block from Hylec-APL can easily be snapped into different lengths at any position by hand or with a blunt knife to suit OEM requirements. It is particularly useful and cost-effective for R&D projects and short production runs. This convenient and high quality 36-pole terminal block features professional rising clamp terminals and is rated 24A/250VAC.

Manufactured from UL94-0 flame-retardant polycarbonate, the 36-pole terminal block has zinc-plated steel rising clamps designed to accept solid or stranded cable from 0.2mm to 3.6mm². It features tinned, nickel-plated brass pins/terminals with guided pin alignment and anti-solder wicking to ensure correct and clean connections. Recommended PCB hole is 1.3mm in diameter.

Electrical characteristics are: dielectric strength ≥ 2.5kV and 4kV impulse withstand voltage. Working temperature qualification is 100degC.


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Sensata / Crydom EL Series Solid State Relays


Panel Mount Solid State Relays

Sensata | Crydom EL Series DC output solid state relays come in a compact, 21 x 35 mm housing and offer ratings up to 20 Amps. These compact SSRs come with a pre-installed thermal pad, and are C-UL-US and TUV certified and CE compliant. The EL Series mechanical design includes quick connect terminals and an innovative 90° bent terminals option ideal for applications with limited vertical space.

• Ratings of 5A, 10A and 20A @ 3-100 VDC
• UL Recognized, TUV, CE and RoHS Compliant
• 5, 12 and 24 VDC control input options
• Mosfet Output
• Thermal Pad Included
• Plastic housing with min. 250 CTI rating (PLC2) for demanding applications

• Battery Management Systems
• Backup Power Supplies
• Valves
• Vending Equipment
• Lighting control
• Medical Equipment


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ZF Develops Energy Harvesting Light Switch with EnOcean3.0 Protocol

Intelligent lighting systems are key drivers for the rapidly growing global smart home sector. These not only have to be energy-efficient, sustainable, and cost-effective, but also connected for increased flexibility. Therefore, ZF decided to join the EnOcean Alliance in spring 2021 to join this growing market. This enables the expansion of ZF’s energy self-sufficient product portfolio with a wireless and battery-free light switch module with EnOcean3.0 protocol.

With its energy harvesting product range, ZF offers a sustainable alternative to traditional systems – based on radio and completely free of batteries and cables. ZF aims to promote this sustainable trend with new products especially for smart homes and the lighting sector. An essential step is to expand the light switch portfolio with commercially available protocols, to enable the switch to be integrated in commercial buildings. Beyond the unique energy harvesting KNX light switch module, ZF offers now a light switch module that can be fully integrated into existing EnOcean3.0 wireless systems. The EnOcean3.0 radio protocol is designed for a frequency band of 868MHz (EU, Asia) and 915MHz (USA). Within buildings, low frequencies are particularly suitable for penetrating walls or ceilings and ensure reliable radio transmission. In addition, the radio range is up to 30 meters inside the building. The wireless light switch modules from ZF are compatible with standard frames available on the market and can also be combined with customer-specific control and design panels.

In addition to light switch modules, customer-specific solutions can also be developed based on the EnOcean3.0 protocol for Smart Home applications. One example is connected doors and windows which transmit signals for ambient condition monitoring. Another application is for smart industrial switches and stop request buttons in buses which can transmit specific commands via RF to factory workers and bus drivers. The core component of these energy harvesting radio modules is a small generator (20.1 x 7.3 x 14.3 mm), which creates enough energy by means of induction and by pressing a button, so that a radio signal can be transmitted to a receiver. As a wireless solution, these radio modules offer flexibility and design freedom in order to accomplish individual requirements. As a battery-free solution and with a lifetime of up to 1,000,000 switching cycles, costly maintenance and disposal of replaced batteries can be avoided.


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Finder 41 Series Solid State Relays


Low-Profile P.C.B. Relays 3 – 5 – 8 – 12 – 16A

Function and Features:
The 41 Series is a range of miniature low profile printed circuit board relays (height 15.7 mm). The different Types that make up this Series are:

EMR version
• Low profile, 15.7 mm height
• AC & DC coils
• 8 mm, 6 kV (1.2/50 μs) isolation, coil – contacts
• Flux proof: RT II standard, (RT III option)

Solid State (SSR) version
• Low profile, 15.7 mm height
• Sensitive DC input circuits
• Silent, high speed switching with long electrical life

• Medical and Dentistry
• Industrial Robots
• Building Automation
• Control Systems
• Timers and Lighting Controls
• Door and Gate Openers
• Electronic Circuit Boards
• Vending Machines


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Cynergy3 IWmAT Series – Industrial Wireless 4-20 mA Transmitter


The IWmAT Wireless Transmitter is a cost effective alternative to traditional wiring that offers the advantages of a low-cost installation in inaccessible and expensive installation environments.

It is easily paired to any of the range of IWR receivers – thus offering a “plug and play” solution to your 4-20 mA current application.

The IWmAT sensor should be used with any of the IWR range of receivers. A line-of-sight range of up to 500 m is possible depending on the wireless receiver used (refer to specific receiver datasheets for
further information).

• 4-20 mA wireless transmission
• Up to 500 m line-of-site range (depending on receiver)
• Five-year battery life at 10 second transmission update rate
• Simple DIL switch pairing with the single or five channel receiver
• User-selectable transmission update rates
• A range of receivers are available
• Receiver clean contacts provide process alarm functions

Typical Applications Include:
• Simple cable replacement installation – dispense with expensive and tortuous cable runs
• Analog Sensor Status – transmit 4-20 mA sensor outputs to a remote receiver


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Entrelec SNACompact Terminal Blocks

Small Is Big with SNACompact Terminal Blocks

NACompact terminal blocks help to improve panel building process providing compact and performant products relying on more than 60 years track-record.

• Secure your wiring with ENTRELEC screw clamp featuring hardened steel, anti-release system, funnel entry for conductor, tab under clamp.
• Save up to 14% in height for 2.5 and 4 mm² versus SNA-type terminal blocks, which allows to fit in smaller junction boxes.
• Provide for a long lifetime on site time-tested by 60 years track record on screw technology, fire resistant V0 plastic grade and installation in harsh environments.
• Optimize the installation, wiring and connection, by taking benefit from ENTRELEC design, screwless ground connection, well aligned fuse and disconnect version.
• Reduces mounting errors thanks to asymmetrical design and by using compatible TE Connectivity’s end ferrules and crimping tools.
• Improve the layout & identification of the panel by using TE Connectivity’s large cable management portfolio, including identification labels, card and roll printing systems, cable ties and cable wrapping accessories.
• Save time when designing your panel thanks to TE Connectivity’s digital tools, such as TE.COM and Easy Rail Designer 3D CAD software allowing rail assembly design and 3D viewing functionality.

• Connecting capacity from 0.2 to 95 mm² (24 to 0000AWG)
• Reliable hardened steel clamp
• Large choice of functions from standard feed-through, ground , disconnect and fuse to specific such as test & measurement, miniblocks, sensor actuators and more
• Screwless ground blocks
• Tested upon environmental conditions : Vibrations: IEC 60068-2-6 standard; Corrosion: salt mist as per IEC 60068-2 §11; Flammability: UL94V0 & needle burning test (IEC 60947-7-1 §8.4.6); Short-circuit: IEC 60947-7-1 §8.4.6.


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Crouzet HIH Current Monitoring Relay Application


Crouzet HIH Relays monitor the stadium lighting electrical network current in order to alert the maintenance team as soon as a failure occurs.


The Olympic Committee defines strict standards for stadium lighting. The luminosity must be uniform on surfaces during the games to ensure an equity between athletes and an optimal quality of television broadcasting.

To ensure a top quality lighting of the event, the regulation imposes a maximum duration of 20 minutes between the breakdown and the repair of a stadium projector. That is why it is key to equip each stadium and playing field with a system checking the operating condition of the headlamps.



• Control of AC and DC currents
• Automatic recognition of AC/DC
• Measurement ranges from 2 mA to 10 A
• Choice between over and undercurrent
• True RMS measurement
• Selectable latching (memory) function


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Contact E Preston Electrical

tel: +44(0) 161 339 5177


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