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.
DSTH DIP Switch
DSTH DIP Switch: Robust Standard Profile and 2.54mm Pitch THT (through-hole technology) Switch
The DSTH DIP Switch is a robust, standard-profile and 2.54 mm pitch THT (through-hole
technology) switch. It enables electronic devices to be configured directly at hardware level. Addresses, communication parameters, logic states and operating modes can be set easily and
clearly, without modifying software or firmware.
Electrically, the DSTH uses SPST contacts and offers 2~10, 12 multiply positions. Ratings are 25 mA at
24 V for frequently changing switching states and 100 mA at 50 V for constant switching states. Initial
contact resistance is ≤ 50 mΩ and ≤ 100 mΩ after the specified tests. Further specifications include a
dielectric strength of 500 V AC for one minute, 2,000 mechanical switching cycles and an operating force
of ≤ 8 N. The operating temperature range extends from -40 °C to +85 °C.
Typical applications include PLC controls, industrial servers, medical devices, robotics, air-conditioning
systems and household appliances. In these applications, the DSTH can be used for RS485 and
Modbus addressing, BIOS/CMOS settings, as well as the configuration of hardware parameters,
functions and operating modes. Combining proven performance, competitive cost and fast availability,
DSTH is an ideal solution for OEMs seeking a reliable alternative to premium-priced standard DIP switch
brands.
Enquiry Form: https://www.epreston.co.uk/contact/
Home Page: https://www.epreston.co.uk/epblog/
AFDD Arc Fault Detection Device
Eaton’s AFDD provides comprehensive protection against
electrical fires triggered by arc faults. This all-in-one
device combines the functions of a residual-current
circuit breaker, miniature circuit breaker, and arc fault
detection, protecting against electric shock, overcurrent,
short circuits, and arc faults. Through continuous electronic
cable monitoring, the device detects arc faults and trips
automatically to reduce the risk of residential electrical
fires. It provides electricians with a more efficient,
standards-compliant solution for enhanced safety.
Core Features:
Single Module AFDD
Eaton’s single-module AFDD range delivers all-in-one protection in a compact design. Engineered for residential and commercial applications, it enables space-saving distribution boards and seamless upgrades of existing installations, while supporting compliance with BS 7671 AFDD requirements.
Features:
Types
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.
