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Official distributor and wholesaler of relays from brands such as Crouzet, Crydom and Finder
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E. Preston Electrical

Relays

What is a Relay?

Relays are electrically operated switches that open and close circuits receiving electrical signals from external sources. The relays built into electrical products work in a similar way; they receive an electrical signal and send the signal to other equipment by turning the switch on and off. The three main functions of relays are to allow a small amount of electrical current to control high current loads, send different types of electrical signals, and drive multiple outputs with just one input.

What Do We Supply?

We have a broad range of relays in stock, including:
Modular step relays
Monostable relays
Ultra-slim PCB relays
Relay interface modules
Miniature PCB/plug-in relays
Low profile PCB relays
Miniature industrial relays
Safety relays
Power relays
Miniature power relays
Solid State relays
Relay bases
Coil indication
EMC protection

Why Choose E. Preston?

We are an official distributor and wholesaler of relays from brands such as Crouzet, Crydom and Finder. These are well known companies in their fields with excellent reputations for the quality of their products.

What really sets us aside from our competition is our choice and range of relays – you really don’t need to look anywhere else for your requirements.

As we have been operating for over forty years, we have developed a fantastic relationship with our suppliers. This benefits us in two main ways: We gain access to the widest choice of components from those suppliers, and secondly, they sell us those components at competitive prices because we purchase such significant volumes. We are able to pass on those competitive prices to you, our customer.

We have a large stockholding of our products at our warehouse in Dukinfield, Cheshire in the UK. This stock means that our product availability is consistently high, and we can get your order for stock items out to you in a 24 to 48 hour time frame.
and we can talk through your specific relay requirements.

Featured Products

Manufacturers

News

August 8, 2025

Schurter DD11 / DD21 Rotated Switch

Image
Schurter dd11

DD11 and DD21 – New with Rotated Switch

  • Designed for medical applications
  • 2-pole fuseholder
  • DD11: 2-pole switch
  • DD21: 1- or 2-pole switch
  • V-Lock cord retention

The Schurter DD11 and DD21 power entry modules, which are already used in a variety of applications, are now available in a version with a rotated switch. This meets the specific requirements of medical applications where the switch (rocker) must be rotated by 180°: the switch-on position is at the top and the switch-off position is at the bottom.

With their ultra-compact design, the power entry modules DD11 and DD21 are the ideal choice for low-profile designs. They are all-in-one solutions comprising an IEC C14 connector, a fuse holder and a switch. All the individual components are pre-wired. This significantly reduces assembly time. The compact design and three-in-one functionality allow less space to be used in the equipment. The power entry modules DD11 and DD21 are ideal for applications involving high transient loads.

New with 180° Rotated Switch
Schurter newly offers two different variants with switch-on and -off position rotated by 180°, thus meeting the requirements of many medical electronic applications.

V-Lock Cord Retention
All DD11 and DD21 modules, including these new variants with rotated switch, are equipped with the proven V-Lock cord retention system as standard.

Application Areas
The new variants are suitable for applications according to IEC/UL 62368-1 (Audio/video, information and communication technology equipment), IEC 60601-1 (Medical electrical equipment) and IEC 60335-1 (Electrical appliances for household and similar purposes). They also meet the requirements for appliances in unattended use. This includes the enhanced requirements of glow wire tests acc. to IEC 60695-2-11 or -12 & -13.

Applications

Schurter dd11 2

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

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August 6, 2025

Schurter DG11 Magnetic Release Power Entry Module

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Schurter dg11

DG11 – With Additional Magnetic Release

  • Thermo-magnetic circuit breaker for increased
    short-circuit protection
  • V-Lock cord retention
  • Water- and dustproof (IP67)

The Schurter DG11 power entry module, which has been optimized and proven over many years, is now available in a version with an additional magnetic release to protect against very high overcurrent (short circuit).

Circuit breakers are usually designed according to the thermal principle with a bimetal. If a defined temperature is exceeded due to the overcurrent, the circuit is interrupted. Once the bimetal has cooled down, the device is ready for use again. However, this process is very slow. For this reason, thermal circuit breakers are usually combined with a fuse.

New with Additional Magnetic Module
Schurter is upgrading its TA35 2-pole miniature circuit-breakers with an additional, optional magnetic module. From now on, no additional fuse is required for the thermal-magnetic versions. Depending on the application, the magnetic modules are available with both slow and fast characteristics.

V-Lock Cord Retention
The new versions of the DG11 connectors are equipped with the proven V-Lock cord retention protection as standard.

Splash- and Dustproof: IP67
The DG11 power entry module is fitted with special sealing elements (gaskets) to achieve the very high degree of protection IP67.

Application Areas
Wherever dirt, dust particles or water occurs, and the highest safety standards are required, these new Schurter power entry modules are the perfect choice. Typical areas of application are harsh industrial environments or demanding medical applications where cleaning and disinfection as well as maximum protection against overcurrent (short circuit) are required.

Applications

Schurter dg11 apps

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

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