Over 40 years of Excellence
E Preston has been a specialist distributor of electrical and electronic components since 1980, offering thousands of products to meet a wide variety of needs and applications.
But we do more than simply sell components – we have built a reputation as a company who does business the traditional and honest way. Paying attention to the simple things – like phoning people back when we say we will – has kept our customers coming back for over four decades.
Our staff are experts in their fields, we maintain appropriate stock levels, and all of our processes are fully computerised to ensure a smooth operation.
We also understand that business is carried out between people, not companies. We do the hard work to maintain relationships with our suppliers as well as our customers. That way everybody in every part of the supply chain is satisfied – from the manufacturer to the end customer.

SSRs with Small Footprint Designed to Mount on a Printed Circuit Board. Ratings from 1 to 25 Amps at 24 to 660 VAC

Sensata | Crydom offers an extensive line of PCB Mount AC Output Solid State Relays including the popular industry standard footprint SIP, Mini SIP and DIP configurations, and most of the SIP type SSRs are also offered as DIN rail mountable assemblies.
Our PCB mount AC output SSRs are ideally suited for high density applications and they are available with ratings from 1 to 25 Amps at 24 to 660 VAC. Inputs are available covering 24 to 140 VAC or 3 to 32 VDC depending upon model.
With the exception of some AC output models rated greater than 10 Amps where forced air is used for improved output ratings, all of our PCB mount relay output ratings are based upon free air.




Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/

Finder Series 46, 55, 39 Comparison

Finder 46 Series Miniature Industrial relays 8-16A

The 46 Series Finder mini industrial relays are distinguished by their ability to adapt to a wide range of industrial and commercial applications.
Among the main technical advantages, they ensure wide range of voltages available in both AC and DC versions, high-performance contacts made of high-quality materials (providing excellent conductivity and long operating life), high isolation (Galvanic isolation between coil and contacts for enhanced safety and reliability), compatibility with automation systems (can be integrated with major industrial automation platforms).
Function & Features:
The 46 Series comprises industrial power relays with the following features (according to Type):
Applications:
Finder 55 Series Miniature General Purpose Relays 7-10A

The Finder 55 Series miniature general-purpose relays are versatile 7–10A, 2–4 pole, plug-in or PCB-mount devices designed for industrial automation, HVAC, and power management. They feature AC/DC coils, optional lockable test buttons, mechanical indicators, and LED status, compatible with 94-series sockets.
Function & Features:
Finder’s 55 Series general purpose relay range includes the following features (according to Type):
Applications:
Finder 39 Series - Relay Interface Modules (EMR or SSR) 0.1…6A

The Finder 39 Series MasterINTERFACE modules are ultra-slim (6.2 mm), DIN-rail mountable relay interfaces designed to isolate and switch loads between PLCs/controllers and field devices. Featuring EMR or SSR technology, they offer 1-pole (6A) switching, screw/push-in terminals, and jumper links for efficient wiring. These modules are ideal for space-constrained industrial automation.
Function & Features:
The 39 Series is a range of modular interface relays which include the following features (according to Type):
Applications:
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
© E. Preston (Electrical) Ltd 2026.
UK distributor of electrical and electronic components.