Circuit Protection

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

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.

Call us now on:

+44 (0) 161 339 5177

Send us a message

to place an order or speak to our technical team about circuit protection devices.

Featured Products

Switches

Switchgear and Control Gear

Relays

Electrical Timers

Fuse Holders

Electrical Connectors

Electrical Indicators

Battery Holders

Power Inlet Modules

IEC Connectors

Power Supplies

EMC Filters

Terminals and Terminal Blocks

Motors

Solenoids

News

January 9, 2026

Finder 72 Series Level Control Relays 16A

72 Series Level Control Relays 16A

The 72 Series comprises level control relays for conductive liquids.

Function & Features (according to Type):

Sensitivity fixed or adjustable (5…150kΩ)
35mm rail (EN 60715) mount

Applications:

Industrial Washing Machines
Swimming Pools
Control and Management of Water
Bottling Plant
Milk Processing Plant
Control Panels for Pumps

Finder 72 Series Brochure Download

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

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

January 7, 2026

Johnson Electric - X3 & XG Miniature Microswitch Series

SAIA X3 vs XG Switch Range

Johnson Electric is a leader in microswitch technology, offering precision microswitches under the Saia brand and industrial-rated options under the Burgess brand.

The X3 and XG ranges of MINIATURE microswitches from the SAIA® brand within the Johnson Electric portfolio, are ideal for high-volume, precision switching in compact environments. Both offer snap-action mechanisms and a variety of lever & terminal configurations