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

December 9, 2025

Sensata / Crydom DRA1 Series (DIN Rail Mount DC Output) Solid State Relays

10mm wide SSR assemblies. Ratings from 3 to 10 Amps at 1-200 VDC. Bipolar transistor or MOSFET output.

The DRA1 Series combine DC output PCB mounted
Single-in-Line Solid State Relays with 10mm wide
DIN rail mounted sockets to create ready-to-use
assemblies, which are ideal for low to medium
power control for heating, lighting or motion
control applications.

Features:

Ratings from 3A to 10A and 1 VDC to 200 VDC
Single Channel Output
Transistor or FET output
LED input status indicator
DC control

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

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

December 5, 2025

Finder 7S Series Modular Relays with Forcibly Guided Contacts 6-10A

7S Series Modular Relays with Forcibly Guided Contacts 6-10A

The 7S Series consists of relays with forcibly guided contacts for SIL 2/SIL 3 safety applications, include the following features (according to Type)

Functions & Features:

For safety applications, with class A forcibly guided
contact relays (EN 50205)
2 pole (1NO + 1 NC), 4 pole (2 NO + 2 NC and 3 NO + 1 NC)
or 6 pole (4 NO + 2 NC)
35 mm rail (EN 60715) mount, 22.5 mm wide
Available version for railway applications

Applications:

Hoists and Cranes
Carousel Warehouses
Escalators
Elevators and Lifts
Automatic Car-Washes
Chemical and Petrochemicals
Process Industry