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 24, 2026

Honeywell 4 Series NDIR Hydrocarbon Gas Sensor

4 Series NDIR Hydrocarbon Gas Sensor for Industrial safety, gas detection, emissions analysis/monitoring, refrigeration and other relevant gas sensing applications.

Honeywell City Technology’s latest innovative solution for
flammable hydrocarbon gas sensing, incorporating state of
the art optical NDIR technology to provide a sensor with high
performance, precision & reliability, that can manage even in
the harshest environments.

This sensor joins the extensive line of 4 series Honeywell
gas sensors.

Features & Benefits:

Digital interface – Sensors have UART protocol as standard to communicate with instrument via chip select option
Enhanced resilience – Environmental robustness, for performance in high temperature & humidity
Gas selection – Option to select from a range of target hydrocarbon gases, with linearized output for minimal processing
Long life – Proven sensing technology, designed to operate & last over ten years
Pre-calibrated – Sensors calibrated during manufacturing & data is written in the sensor
Certified – Meets global performance standards in line with ATEX, IEC Ex & more

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

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

March 23, 2026

Sensata / Crydom CX Series (PCB Mount AC Output) Solid State Relays

SIP style SSRs with ratings of 5 Amps at operating voltages ranging from 12 to 660 VAC. AC or DC control input.

The CX Series is a family of SIP style
PCB Mount Solid State Relays with ratings
of 5 Amps at operating voltages ranging
from 12 to 660 VAC.

Features:

Back-to-back SCR output for heavy industrial loads
AC or DC control input
Zero voltage (resistive loads) or instantaneous (inductive loads) turn-on output
UL, CSA and TUV certified