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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
UK Next Day Delivery
Expert Advice
No Min Order Charges
Technical Support
Flexible Payment Terms
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
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



November 29, 2023

Johnson Electric – DC Motors


Johnson Electric, the world leader in micro motors, offers custom engineering solutions based on a wide range of low voltage DC and high voltage DC motor platforms.

The low voltage DC platform provides power density and compact packaging options.

The high voltage DC range provides power density and space saving advantages versus traditional AC motors in similar applications.

Enquiry Form:

Home Page:

November 16, 2023

Finder 32 Series PCB Relays

Subminiature PCB relays

The 32 Series comprises miniature 6 A relays for printed circuit board mounting with the following features (according to Type)

Functions & Features:

  • 1 Pole changeover contacts or 1 Pole normally open contact
  • Subminiature, low profile package
  • Sensitive DC coil: 200 mW – Wash tight: RT III


  • Copiers
  • Hi-Fi Systems
  • Washing Machiness
  • Control Systems
  • Electronic Kits
  • Medical and Dentistry
  • Electronic Circuit Boards
  • Programmable Controllers

Enquiry Form:

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