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We stock thousands of circuit protection products for a broad range of applications from quality brands such as ABB, Bulgin, Bussman, E-T-A, Littelfuse, Schaffner and Schurter
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Over 40 Years Experience
E. Preston Electrical

Circuit Protection

What is a Circuit Protection device?

A circuit protection device is a fail-safe device that originates a disruption in an electrical circuit when it recognizes an excess and unsafe power load in a circuit. The main aims of circuit protection are to localise and isolate the situation or fault and avert and minimize any unnecessary power loss.

What Do We Supply?

We have broad selection of circuit protection devices, including:
Circuit breakers
Thermal circuit breakers
Thermal-magnetic circuit breakers
Magnetic circuit breakers
Hydraulic-magnetic circuit breakers
Fuses
LV fuse links
LV fusegear

Why Choose E. Preston?

Established in 1980, we offer customer service that is second to none. This is one primary factor behind the growth in business we have experienced over the past forty two years. We have expert knowledgeable staff who are always on hand to answer any technical questions you might have about our products – they are just a phone call away.

The second main reason behind the company’s growth is the sheer depth in our products. We stock, or have access to, thousands of circuit protection products for a broad range of applications. The quality brands that we deal with include ABB, Bulgin, Bussman, E-T-A, Littelfuse, Schaffner and Schurter. You don’t have to search anywhere else for your needs.

In addition, we will do our very best to make sure that you receive your order next day, as long as you order in time, and if required, and we can offer flexible payment terms.
to place an order or speak to our technical team about circuit protection devices.

Featured Products

Manufacturers

News

September 23, 2026

Schurter 4763 Appliance Outlet IEC Type F / J

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With the new 4763 Type F/J outlet, Schurter offers a flexible solution for modern power
distribution systems.

Schurter 4763 Pic

Appliance Outlet 4763 IEC Type F / J

  • Combines 10 A and 16 A in a single component
  • High design flexibility for PDUs
  • Compatible with dimensions of existing Type J
    outlets, e.g. 4797-5

With the new 4763 Type F/J outlet, Schurter offers a flexible solution for modern power distribution systems, particularly in data centers. By combining Type F and Type J in a single outlet, the 4763 supports different current ratings while simplifying the design of intelligent PDUs.

A key advantage is its full mechanical compatibility with existing Type J outlets such as the Schurter
4797-5. Identical cut-out dimensions allow existing designs to be reused without modifications to front
panels or PCB layouts, reducing development effort and simplifying retrofits.

For maximum design flexibility, the outlet is available with optional light guides for status indication and
various configurations to accommodate different panel thicknesses. It supports PCB mounting, operates
reliably from –25 °C to +70 °C, and complies with relevant TÜV requirements.

Additionally, the 4763 supports established cord retention systems such as V-Lock, P-Lock, and TwyLock,
ensuring secure connections in critical applications.

This makes the new Schurter 4763 an ideal choice for data center, industrial, IT and
telecommunications applications where flexibility, reliability and easy integration are essential.

Schurter 4763 Apps

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

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

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September 21, 2026

Finder 7E Series Energy Meters

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Energy Meters

Finder 7E Series

The Finder 7E Series is a lineup of single-phase and three-phase energy meters with mechanical or LCD backlit dispslays built for accurate, certified electrical power measurement in residential, commercial, and industrial panels.

Features (according to Type):

  • 1 or 3 phase
  • Single or Dual tariff
  • Pulse output for remote energy management;
    SO interface (open collector) according DIN 43864
  • LC-Display or Mechanical Display
  • 35mm rail (EN 60715) mount

Applications:

  • Panels for Electrical Distribution
  • Control Panels
  • Electrical Energy Control
  • Industrial Robots
  • Road / Tunnel Lighting
  • Elevators and Lifts

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

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

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