E. Preston (Electrical) Ltd, approved and trusted supplier of electrical components and an official distributor for top brands
UK Next Day Delivery
Expert Advice
No Min Order Charges
Technical Support
Flexible Payment Terms
Over 40 Years Experience
Why choose E. Preston Electrical?
Official Distributor For Top Brands
We introduce our company as a specialist distributor of electrical and electronic components.
We are an official authorised distributor of ABB, Adaptaflex, Arcolectric, BDC Electronics, Bulgin, Bussmann, Cherry, Chint, CML, Crouzet, Crydom, Cynergy3, Eaton, Entrelec, Essen, E-T-A, Finder, Honeywell, Hylec, IDEM, Johnson Electric/Saia-Burgess, Kraus & Naimer, Moeller, Sensata, Schaffner, Schurter, Scolmore, Tranilamp, Werma, Wieland and ZF. We are fully franchised for their complete ranges of switches, contactors, neons, timers and relays; buying directly from the manufacturer and selling at all of the manufacturers’ price breaks.
We also supply components from many other well known brands and our expert team can help you to find hard to source items and available stock. More details are available on our company line card.
There are no minimum order charges unless imposed upon ourselves by the manufacturer. We are very easy to deal with and will quickly open a credit account for regular business. We have the facility to accept payments by credit or debit card. Our telephone lines lead directly into the sales office, thus avoiding possible frustrating delays whilst you wait to be put through to someone. We maintain good stock, have the expertise to advise on applications or equivalents, keep promises (including phoning back) and dispatch the same day we receive your order via 24 hour courier service. Out of stock items are dispatched the same day we receive them. We can also supply Certificates of Conformance as required.
Approved & Trusted
We are registered as an ISO 9001:2015 approved stockist and supplier, registration number RS 10581. We are also an MOD approved supplier, registration number 3EVP01.
All of the national wholesaler groups buy from us, and we ask that you look through the information about our company to see if you would benefit from using us. We are happy to quote against equivalent RS and Farnell references and we will do our utmost to prove our claims.
The DMTH Series: A Robust and Cost-Effective DIP Switch
DMTH: The Industry Standard 2.54mm THT-DIP-Switch
2.54mm standard pitch design
Low profile
High number of cycles
Through hole terminal
The DMTH series is a robust and cost-effective DIP switch designed for reliable manual configuration in industrial and electronic applications. Featuring the industry-standard 2.54mm pitch and THT mounting technology, it offers excellent compatibility with established PCB designs while ensuring secure mechanical retention and soldering reliability.
With up to 12 positions, SPST contacts, recessed or raised actuator options, and a low-profile 3.6mm design, DMTH supports flexible system configuration without increasing board space requirements. The switch is rated for up to 2,000 operating cycles and operates reliably from -40°C to +85°C.
Typical applications include address setting, communication protocol selection (e.g. RS-485, Modbus), function control, BIOS and hardware configuration, medical equipment parameter settings, HVAC systems, industrial controllers, robotics and consumer appliances. Combining proven performance, competitive cost and fast availability, DMTH is an ideal solution for OEMs seeking a reliable alternative to premium-priced DIP switch brands.
Modern control cabinet solutions are no longer created from individual components, but from integrated systems that seamlessly combine planning, wiring, and labeling.
This is exactly where the selos system comes in: a modular, perfectly coordinated overall concept consisting of terminal blocks, digital planning tools, professional labeling, and services. Developed to make your processes easier, faster, and safer.
Safe Wiring With our selos WTPN terminal blocks with push-in connection, you can wire quickly, safely and completely without tools. For maximum flexibility, the selos WTN series with screw connection is also available - ideal for a wide range of applications and proven technology.
Your Advantages:
Tool-free quick wiring or proven screw technology
Extensive range of accessories for all variants
Space-saving design, high contact quality, and excellent vibration resistance
Faster installation processes
The SELOS WTN Din Rail Terminal Blocks with Screw Connection provides a reliable connection, solid and functional, known worldwide, and in use millions of times over.
The selos series combines the classic screw connection with modern connection technology, with the focus on customer benefits and increased efficiency in wiring and the supply chain.
Includes feed-through and ground blocks with 2, 3 or 4 termination points
Multi-tier blocks in two and three tier designs
Knife-edge disconnect blocks and fuse blocks
Specialty function blocks are available with a wide variety of diode circuits
Diverse application-specific terminals, such as transformer disconnect terminals
Smaller size – Uniform design – Fewer accessories
Rated cross-section 1.5mm2 to 240mm2
The SELOS WTPN Din Rail Terminal Block with Push-In Connection terminates wires easily, directly and without tools.
With an effective global concept, compact design and high-performance contact technology, selos WTPN minimizes the installation time and reduces inventory costs to a minimum.
Includes Feed-through and ground blocks with 2, 3 or 4 termination point
Multi-tier blocks in two and three tier designs
Knife-edge disconnect blocks in one and two tier designs and fuse blocks
Specialty function blocks are available with application specific diode circuits
