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We stock and distribute EMC filters from well-known manufacturers and brands such as Schaffner and Schurter
UK Next Day Delivery
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No Min Order Charges
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Flexible Payment Terms
Over 40 Years Experience
E. Preston Electrical

EMC Filters

What is are EMC Filters?

An EMC or EMI filter is an electronic device used to reduce electromagnetic interference (EMI) in a power supply. It is typically used in power supplies, such as those found in computers, TVs and other electronic devices. The filter works by blocking the high-frequency noise generated by the power supply, allowing the device to operate more efficiently and with less interference.

What Do We Supply?

We supply an extensive range of EMC filters, including:
DC Filters
Single-Phase Filters
3-Phase Filters
IEC Inlet Filters and Modules
EMC/IEC Chokes
PCB Filters
Feedthrough Filters
Pulse Transformers

Why Choose E. Preston?

We stock and distribute EMC filters from well-known manufacturers and brands such as Schaffner and Schurter. The quality of their products is second to none, as is the quality of the service to you, the customer. We aim to provide next day delivery for product orders, and are happy to discuss flexible payment options too.

We have highly knowledgeable and experienced staff who are only a phone call away from answering any technical query you might have about any of our products.

Operating for over forty years, we have developed an excellent realationship with our suppliers which means that we get the widest choice of components from those suppliers, but we also alchieve good prices from them because of the volumes we purchase. We are able to pass on those great prices to you, the customer.

Our range of products, including EMC filters, is what sets us apart from our competition. You won’t need to to look anywhere else for your requirements.

We have a large stockholding of our products at our warehouse in Dukinfield, Cheshire in the UK. This stock means that our product availability is consistently high.
to place an order for EMC filters, or to receive technical assistance.

Featured Products

Manufacturers

News

April 9, 2026

Eaton Moeller Series - SPPVT2/T12 xPole Surge Protection

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SPPVT Pic

The plug-in surge arresters SPPVT2 and SPPVT12 are developed especially for photovoltaic applications. They protect the installations against transient overvoltages that can be induced by direct or indirect lightning strikes.

SPPVT12: Homes with rooftop solar PV installations represent an additional vulnerability that requires surge protection. Usually this requires Type 1/2 combinations, for DC protection - based on whether the building has also a requirement for an external lightning protection system. SPPVT12 is developed especially for photovoltaic applications and protects the installations against transient overvoltages induced by direct lightning strikes.

SPPVT2: Type 2 PV surge protection is required, when there is no risk for direct lightning strikes but indirect surges can occur. SPPVT2 protects the inverter and installations against transient overvoltage due to switching and indirect lightning strikes.

These surge arresters are suitable for a wide range of surge protection in a large number of systems.

SPPVT Features
SPPVT Features2b

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

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

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April 7, 2026

E-T-A Timer Relays

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Timer relays are especially suitable for the use in passenger cars, trucks, buses as well as construction machinery and emergency vehicles. They control pumps, valves or motors, which are meant to overtravel or stay open for a defined period of time. They equally control the co-ordinated, sequential switch-on of loads to avoid load peaks (e.g. with fans).

E-T-A timer relays are available for DC 12 V and DC 24 V applications and are suitable for standard automotive relay sockets to ISO 7588.

ETA Timer Relay Pic

Key Features:

  • Functions: Provide ON delay, OFF delay, and interval timing, allowing for flexible, programmable operation.
  • Technical Design: Features include solid-state reliability
  • Installation: Designed to fit standard automotive relay sockets to ISO 7588, facilitating easy replacement.

Key Benefits:

  • Load Management: Enables sequential switching to avoid power peaks and protects batteries.
  • Durability: Engineered for harsh conditions with robust construction.
  • Customization: Offers flexible, programmable parameters for specific vehicle needs.

Applications:

  • Buses
  • Trucks
  • Construction Machinery
  • Specialized Vehicles
  • Protecting Circuits and Controlling Devices that need to run for a specific duration

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

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

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