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

June 29, 2026

Schurter Series: FMAD NEO Power Line Filter

FMAD NEO, 1-Stage Filter for 3-Phase Systems

The FMAD NEO is a highly compact, single-stage EMC/EMI power line filter designed for 3-phase systems with a neutral line. Manufactured by Schurter, it provides high-efficiency noise suppression for industrial machinery and electronic equipment where control cabinet space is strictly limited.

Description:

Terminals for three phases, neutral conductor and ground
1 stage
Very high attenuation
Industrial or low leakage current versions

Key Features

Compact Footprint: Features a nearly cubed shape, making it ideal for the space constraints of modern 3-phase control cabinets.
High Attenuation: Delivers excellent noise suppression relative to its small size and weight.
Machine Safety Compliant: Certain variants comply with the IEC 60204-1 machine safety standard, featuring quick capacitor discharge times (residual voltage < 60 V within 1–2 seconds) and insulation resistance of at least 1 MΩ.
Wide Temperature Range: Operates effectively in harsh climatic conditions, ranging from -40°C to +100°C.

Applications:

Voltage rating 520 VAC for world wide acceptance
Protection against interference voltage from the mains
Especially designed for industrial applications such as: Frequency Converters, Stepper Motor Drives, UPS-Systems, Inverters
Variants Machine Safety suitable for machine applications according to IEC 60204-1
Suitable for use in equipment according to IEC/UL 62368-1

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

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

June 16, 2026

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

Mini SIP Style SSRs with ratings up to 2 Amps at 12-280 VAC

The ASO Series is a family of PCB Mount
Mini SIP Solid State Relays with ratings
up to 2 Amps at 12-280 VAC.

Features:

Back-to-back SCR output
4-10 VDC control
Zero voltage (resistive loads) or instantaneous (inductive loads) turn-on output