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We have in stock, or can make available power supplies from well-known brand names such as Meanwell and Ideal Power
UK Next Day Delivery
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No Min Order Charges
Technical Support
Flexible Payment Terms
Over 40 Years Experience
E. Preston Electrical

Power Supplies

What are Power Supplies?

A power supply is a device that supplies electrical energy to an electrical load. It converts one form of electrical energy to another, such as converting AC (alternating current) to DC (direct current). Power supplies are used in a variety of electronic devices, from computers and cell phones to TVs and gaming consoles.

What Do We Supply?

We supply an extensive range of power supplies, including:
External Power Supplies
Battery Chargers
DC/DC Converters
LED Drivers
Internal Power Supplies (DIN rail, Enclosed, PCB Mount, Open Frame, U Frame)

Why Choose E. Preston?

In over forty years of being in business, we have built a reputation as a company that does business in a more traditional, perhaps old-fashioned way. In our customer service we pay attention to what some may see as small things, like ringing back when we say we are going to do so, and following through on promises.

We have staff who have expert knowledge and are happy to provide technical assistance to you on the products we sell, whenever you need it.

Where we can, we will ensure you get next day delivery on your product order, and we are also happy to discuss flexible payment terms if that will help.

One or great strengths at E Preston is our access to thousands of products, including power supply products, which will be suitable for a variety of uses and applications.

We have in stock, or can make available power supplies from well-known brand names such as Meanwell and Ideal Power.
If it is choice you need, then look no further than us
to discuss your power supply product requirements, or to ask a technical question.

Featured Products

Manufacturers

News

January 14, 2026

Bulgin EMI Mains Filters

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Compact mains and power entry filters are ideal solutions for a wide range of applications that require EMI/RFI protection such as industrial, telecommunication, commercial electronics and medical equipment.

EMI Mains Filters

EMI Mains Filters

  • Designed specifically to reduce mains borne electromagnetic
    interference (EMI)
  • Extensive filter range provides many solutions to
    EMI problems
  • Meeting individual design requirements, the filters are
    available for two considerations – standard and medical
  • Current ratings are from 1-10 amps with single or twin fused IEC connector types also available
  • Easy to install and use - single-phase power line filters and IEC filtered inlets help to rapidly reduce EMI noise and increase performance
  • Carrying UL, VDE & CSA approvals
Bulgin EMI Filter Pic

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

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

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January 12, 2026

Eaton Vehicle Controls Rocker Switches

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Flexible solutions for all your commercial vehicle switching needs

The vehicle controls portfolio at Eaton offers a broad range of solutions not only for on- and off-road vehicles, but also for commercial machine applications that require rugged, dependable switches. These products are at the heart of many systems, including heavy-duty trucks, construction and agriculture.

Eaton Mid Size Rockers

1500/2500, 1600/2600 Series:
Mid-sized rockers are most often found in appliance or industrial applications, but can also be used on vehicles. A value alternative that provides ratings up to 22A in both AC and DC applications with UL approval, the mid-size rocker is an affordable and reliable choice.

Eaton NGR Rockers

NGR Series (New Generation Rockers):
NGR series offers flexibility and modularity with removable lenses & rocker buttons, a wide variety of circuit, icon and LED choices, along with optional IP67 sealing. NGR carries ratings from 500mA to 20A to cover a variety of applications.

Eaton SVR Rockers

SVR Series (Sealed Vehicle Rockers):
The SVR series is designed to meet the rugged demands of construction and agriculture environments. They are rated from 500mA to 15A and IP68 sealed front and rear, with a variety of circuit, icon and LED choices.

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

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

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UK distributor of electrical and electronic components.

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