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Official distributor of Crydom electrical components, including solid state relays (din rails, pcb and panel mount), auxiliary modules, I/O modules.
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Over 40 Years Experience
E. Preston Electrical

Crydom Official Distributor

Crydom Electrical Components

Solid state relays (din rails, pcb and panel mount), auxiliary modules, I/O modules.

About Crydom

Crydom is a world leader in solid state relays, offering thousands of off-the-shelf items as well as custom-designed solid state relays and related products. With over 40 years of experience in the industry, they are the supplier of choice for several major manufactures.

The majority of Crydom products are approved by UL, CSA, VDE and TUV as well as the CE mark — signifying conformance with European directives.

Buy Crydom electrical products from E. Preston

E. Preston Electrical Ltd is an official distributor for Crydom electrical products, we have thousands of components available to buy.
If you have a specific question, please
to speak to a representative.

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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