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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
Expert Advice
No Min Order Charges
Technical Support
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

September 3, 2026

Finder 18 Series: PIR movement and presence detector 10A

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18 Series: PIR movement and presence detector 10A

Finder 18 series

The Finder 18 Series is a range of 14 movement and presence detectors in both indoor and outdoor versions, for ceiling and wall mounting.

Features (according to Type):

  • Small Size
  • Twilight Sensor and Delay Time

Versions with DALI interface and KNX interface are also available.

Applications:

  • Hotel Room Energy-Enabling Units
  • Lighting Control in Corridors (for hotels, offices and hospitals)
  • Offices, Swimming Baths and SchoolS
  • Staircase Light Control

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

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

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August 26, 2026

Schurter STTP 9550: Three-Terminal Fuse

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Schurter Three-Terminal Fuses (STTP) for Battery Systems

Schur 9550 pic

Intelligent Fuse Solutions for Battery Systems

  • Ultra-Low Contact Resistance for High Efficiency
  • High Contact Reliability for Low Signals
  • Enhanced Wear Resistance for Long‑Term Contact Integrity
  • Supports Miniaturization and High‑Power Density Design

The Schurter three-terminal fuses STTP 9550 combine conventional overcurrent protection with an actively triggered overcharge protection function, providing an additional layer of safety for lithium-ion battery systems.

In addition to current-dependent interruption, the integrated trigger terminal enables controlled activation in critical operating conditions. This allows reliable disconnection of charge and discharge paths even in the event of protection IC or FET failure.

Gold-plated terminals ensure low and stable contact resistance, high signal integrity, and
excellent corrosion resistance. The compact package supports high-power-density battery pack
designs ranging from 1 to 24 cells.

Applications:
Typical applications include energy storage systems, power tools, UPS equipment, e-bikes, e
scooters, and automated guided vehicles (AGVs). Supported by UL approvals and designed for
redundant protection architectures required by modern battery safety standards, three-terminal
fuses provide a robust and intelligent protection solution for advanced energy systems.

Schur 9550 app

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

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

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UK distributor of electrical and electronic components.

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