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

News

June 20, 2025

Wieland Room Automation

The construction industry is under pressure: forward-looking, energy-saving targets require the construction of ever more efficient buildings, and in ever shorter times. Neither can be achieved without perfected building automation.

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

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

June 18, 2025

Schurter UL-Uprating of OGD Fuse Holder and OG Clip to 1000 V

Schurter are pleased to announce that the OGD fuse holder and the OG (Clip) 5x20 / 6.3x32 have received an uprating from UL to 1000 VAC/VDC.

This demonstrates the potential of their well-known and popular products, which even exceed initial expectations. This upgrade to 1000 V paves the way for new applications that require a higher voltage rating.

The enhanced voltage rating is effective immediately and includes the following part series:

OGD Series:
Fuseholder Open Design, 5 x 20 / 6.3 x 32 mm, THT, VDE: 250/500 VAC, UL/CSA: 1000 V, Cover, IEC 60335-1

OGD-SMD Series:
Fuseholder Open Design, 5 x 20 / 6.3 x 32 mm, SMD, VDE: 250/500 VAC, UL/CSA: 600/1000 V, Cover, IEC 60355-1

OG Series:
Clip, 5 x 20 / 6.3 x 32 mm, UR