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Official distributor and wholesaler of relays from brands such as Crouzet, Crydom and Finder
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Over 40 Years Experience
E. Preston Electrical

Relays

What is a Relay?

Relays are electrically operated switches that open and close circuits receiving electrical signals from external sources. The relays built into electrical products work in a similar way; they receive an electrical signal and send the signal to other equipment by turning the switch on and off. The three main functions of relays are to allow a small amount of electrical current to control high current loads, send different types of electrical signals, and drive multiple outputs with just one input.

What Do We Supply?

We have a broad range of relays in stock, including:
Modular step relays
Monostable relays
Ultra-slim PCB relays
Relay interface modules
Miniature PCB/plug-in relays
Low profile PCB relays
Miniature industrial relays
Safety relays
Power relays
Miniature power relays
Solid State relays
Relay bases
Coil indication
EMC protection

Why Choose E. Preston?

We are an official distributor and wholesaler of relays from brands such as Crouzet, Crydom and Finder. These are well known companies in their fields with excellent reputations for the quality of their products.

What really sets us aside from our competition is our choice and range of relays – you really don’t need to look anywhere else for your requirements.

As we have been operating for over forty years, we have developed a fantastic relationship with our suppliers. This benefits us in two main ways: We gain access to the widest choice of components from those suppliers, and secondly, they sell us those components at competitive prices because we purchase such significant volumes. We are able to pass on those competitive prices to you, our customer.

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, and we can get your order for stock items out to you in a 24 to 48 hour time frame.
and we can talk through your specific relay requirements.

Featured Products

Manufacturers

News

July 3, 2026

Schurter Series: 4750 Strip Block for Snap-in Mounting

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4750 Strip Block for Snap-in Mounting with up to 7 IEC Appliance Outlets F

Shurter

The Schurter 4750 Series is a configurable, snap-in mounting strip block designed for high-density intelligent Power Distribution Units (PDUs) and data center equipment. It compactly houses 2 to 7 IEC Appliance Outlets (Type F) and eliminates the need for external LEDs by integrating optional light pipes for status indication.

Description:

  • Panel mount
  • Snap-in version front side (1.2 / 1.5 / 1.7 mm)
  • Configurable Strip block from 2 up to 7 outlets type F
  • Cord retention for cordsets with V-Lock, Twylock or P-Lock
  • Pre-assembled Light Pipe for status indication
  • Solder / PCB / QC (4.8 / 6.3 x 0.8) mm

Key Features:

  • Configurable Bus bar (L, N, PE)
  • Optionally with or without light pipes on L or N side
  • Color coding in black (grey and white upon request)
  • Solder / PCB / QC (4.8 / 6.3 x 0.8 mm)

Characteristics:

  • Compact solution for intelligent PDU applications
  • 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/

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July 2, 2026

Finder 77 Series: Modular Solid State Relays (SSR) 5-15-30A

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77 Series: Modular Solid State Relays (SSR) 5-15-30A

Finder 77 Series

The 77 Series is made up of modular and “hocky puck” style solid state relays

Functions & Features (according to Type):

  • Input AC or DC
  • 230V AC or 400V AC output
  • Rated voltage range (19…305)V AC or (48…480)V AC
  • Zero-crossing and random switch-on versions
  • Suitable for lamp loads
  • 17.5 and 22.5 mm housing

Features (“hockey puck”):

  • Input AC or DC
  • 230 V AC or 400 V AC output
  • Switching voltage range (19…305) V AC or (48…480) V AC
  • Suggested applications: heater control
  • Mounting to heatsink with screws
  • Zero-crossing version

Applications:

  • Drying kilns
  • Heating and cooling
  • Lighting control in corridors (for hotels, offices and hospitals)
  • Bottling plant
  • Labelling machines
  • Packaging machines

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

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

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