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.
Finder Series 46, 47, 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/
Honeywell BES 24V - An extension of the Honeywell Battery Safety Sensor Portfolio
First Vent Detection | Rate of Change Algorithm | Automotive Grade | 12V & 24V Options
Honeywell has released its 24V Battery Safety Electrolyte Sensor (BES), an extension of the previously launched BES Series. This product extension enables the seamless integration of the BES Series into high‑voltage battery packs that operate on 24V. The Honeywell battery safety sensor portfolio is designed to enhance safety in lithium‑ion, on‑road, and stationary battery applications.
The Battery Safety Electrolyte Sensor (BES) is an automotive-grade sensor designed for early detection of venting and thermal runaway in battery systems. Utilizing an advanced and patented rate of change algorithm, the BES detects battery electrolyte vapor commonly released during the initial venting phase called First Vent, as well as hydrogen and carbon monoxide gases released during a thermal runaway event.
The ability to detect the First Vent provides an essential early warning for potential thermal runaway incidents in Lithium-Ion battery packs. This proactive early detection facilitates timely and appropriate mitigation measures, significantly reducing the risk of thermal runaway. BES employs a patented advanced rate of change algorithm designed to identify significant changes in the concentration of target gases within a sealed battery pack. This innovative method effectively reduces the occurrence of false negatives that may be seen with conventional ppm-based sensors, which focus on precise target gas threshold monitoring. The algorithm is tuned to prevent false positives, improving the end-user experience. Furthermore, the algorithm is supported by more than 12 years of rigorous research and validated through seven years of practical field deployment.
This extensive experience not only enhances the reliability of the detection algorithm but also underscores its effectiveness in real-world applications. BES enhances the safety and reliability of automotive battery systems.
Sensing:
Features:
Applications:
Sealed lithium-ion battery packs or modules used in
Value to Customers:
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.
