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 22, 2026

Schurter ARO: Inline Fuse

Schurter ARO - Compact. Robust. Reliable.

ARO: Inline Fuse for High-Voltage Applications

Rated voltage: 250 VAC
Rated currents: 16 A, 32 A, and 63 A – additional options
on request
Breaking capacity: 50 kA
Ceramic tube with silver-plated copper alloy terminals
Fulfis GB/T13539.4, IEC60269-4, UL248
CCC, CE and RoHS compliant

Safety and reliability are the key for high voltage applications. The new ARO fuses from Schurter provide robust protection for HV applications. Designed as an inline fuse, ARO integrates seamlessly into charging cables and connectors. It also meeting the latest international safety standards.

Ideal for EV charging cables and plugs, vehicle accessory lighting, general wiring protection, power generation and transmission, and telecommunications.

Economic design and flexible customization make ARO the perfect choice for high-performance applications like EV charging systems. Available in standard versions or tailored to customer specifications.

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

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

January 20, 2026

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

22.5mm wide SSRs with ratings from 10 to 30 Amps at 60 VDC. 4-32 VDC control voltage

The CKM Series is a family of 22.5mm wide DIN Rail Mount
Solid State Relays with ratings from 10 to 30 Amps at 60 VDC.

Their low leakage MOSFET output provides added reliability in
commercial and heavy industrial applications.

Features:

Slim 22.5mm (width) package
Flexible Control Voltage: 4-32 VDC
LED input status indicator