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Welcome to E. Preston Electrical

Specialist Electrical Distributors

Distributors and suppliers of electrical components, rocker, toggle, proximity & limit switches,
microswitches, safety switches, indicators, control gear, circuit breakers, timers, fuseholders, filters, relays, sensors, inlets & connectors. We can supply the parts you need anywhere in the world.
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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.

Manufacturers

News

April 24, 2025

E-T-A SCS Smart Control Systems - SCS200

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Eta scs

SCS200 – Intelligent Power Management

Intelligent and complex systems as well as the electrification of loads currently play a decisive role in the development of on-board electrical systems.

The SCS200 is the right answer to these requirements. It is an intelligent power distribution system, enabling decentralised control and monitoring of loads via CAN bus. The design features a PCB-based power distribution in a compact IP66/67 enclosure.

The SCS200 modules are plug & play solutions which help reduce wiring time and space requirements. Its comprehensive diagnosis capability (integral load protection, load current and voltage measuring, output status) and its integral CAN connection enable predictive maintenance and implemented load management.

Typical Applications:

  • Agricultural machinery, construction machinery, special vehicles, trucks and buses
  • Decentralised power distribution downstream the ECU
  • Vehicle modernisation and easy system extension through standardised CAN components

Benefits

  • Predictive maintenance and load management through comprehensive diagnostic functions (current, voltage, status)
  • Facilitated wiring through plug & play solution with CAN connection
  • Space-saving, flexible installation through compact IP66/67 housing
  • Increased safety through integral electronic load protection

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

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

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April 22, 2025

Honeywell HLD Series: Hydrogen Leak Detection Sensor

Honeywell logo
Hw hld

The Hydrogen Leak Detector (HLD) Sensor uses the Honeywell advanced compensation algorithm to detect Hydrogen leaks in different applications. Designed with precision and reliability in mind, the HLD Sensor employs cutting-edge Thermal Conductivity Detection (TCD) technology to deliver lasting performance for many applications that require a highly accurate solution without manual intervention for ten years.

Its advanced detection capabilities ensure the identification of hydrogen leakage of 50 ppm or greater. Honeywell HLD Sensors can be utilized in many industries, such as automotive, industrial safety equipment, and residential power generators.

The incorporation of TCD technology in the HLD sensor offers several key advantages over catalytic beads. These benefits include greater accuracy, extended sensor lifespan, and enhanced resistance to chemical poisoning. With these advantages, the HLD sensor gives users the confidence that both lives and assets are well-protected.

Features:

  • High accuracy
  • CAN communication protocol (available) and voltage reading output (coming soon)
  • Thermal conductivity base sense element
  • Fast response time: <2 seconds
  • Short startup time: <1 second
  • Hydrogen sensing range: 0 % to 4 %
  • Operating temperature range: -40°C to 85°C [-40°F to 185°F]
  • 50 H2 ppm resolution to detect low levels of H2 leakage
  • Resistant to chemical poisoning

Applications:
The HLD sensor is typically adjacent to the hydrogen storage tank, hydrogen gas piping, fuel cell, or vehicle cabin.

  • Hydrogen-powered heavy-duty trucks
  • Hydrogen-powered buses
  • Hydrogen-power generators
  • Hydrogen-powered automobiles
  • Hydrogen-powered construction equipment
  • Hydrogen-powered aircraft

Value to Customers:

  • Accurate: Designed for precise H2measurements to improve safety, allowing enhanced protection of assets and life
  • Reliable: TCD technology usage enables the customer to reduce downtime by eliminating false positives
  • Packaging: The IP67 seal allows the use of HLD even in numerous applications

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

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

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