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

March 18, 2026

Bulgin Fuse Holders

Bulgin’s extensive range of fuse holders are designed to give the high degree of protection demanded in today’s sophisticated electronic equipment. Carrying world-wide safety approvals from UL, VDE, CSA and IMQ, all types are manufactured from high grade flame retardant nylon and polyester materials.

Available in a variety of mounting options including panel mount, PCB & base mount, these compact and shock safe fuse holders are ideal solutions for 5 x 20mm, 6.3 x 25mm and 6.3 x 32mm fuses.

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

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

March 17, 2026

Eaton Moeller Series - SPPVR Surge Protection

The SPPVR family of surge protection devices (SPDs) is our answer to the growing need for safe and reliable photovoltaic (PV) installations in residential and commercial buildings.

Powerful protection is the first step to ensuring a long lifetime for your equipment and inverters: these SPDs ensure that your system will not be damaged by any overvoltage event on the direct current (DC) side of your PV application.

The SPPVR products can be deployed in residential settings, for example in small combiner boxes or commercial applications such as array protection boxes in PV fields. SPPVR offers a future-proof portfolio for all possible use cases.