A Breakdown of Available Entrelec UK DIN Rail Terminal Blocks & Electrical Connectivity System Parts

One of the many brands renowned for sustaining the industrial parts landscape is Entrelec. Despite a few shifts in their ownership, their connectivity offerings are still a gold standard for operators seeking space-saving, durable solutions. As such, many of the products they have created over the years are featured on The Aviation Mart, an ASAP Semiconductor owned and operated platform that supplies an extensive inventory of top-notch electronic parts, aerospace components, and industrial hardware. This blog will explore the standout terminal blocks and connectivity products that can be found under the "Entrelec Uk" designation on The Aviation Mart, providing some insight into their utility to help you determine if they suit your operations.

Entrelec’s Background and Product Line Continuity

Founded in France in 1920, Entrelec established their early reputation by fabricating insulated terminal systems for power generation and heavy-duty industrial environments. The company was among the first to standardize modular terminal blocks using polyamide insulating housings, which enable very high-density wiring layouts without compromising electrical isolation or mechanical strength. By the early 2000s, Entrelec was acquired by ABB and operated under the ABB Entrelec name, during which time its product range expanded into modular power distribution and control cabinet accessories.

However, TE Connectivity ultimately absorbed ABB and Entrelec in 2018. Even through these transitions, many of Entrelec’s core product lines have remained remarkably consistent and backwards-compatible. For example, some legacy 6-digit and 9-digit part numbering formats have stayed mostly the same with just an "1SNA" added to the front to fit TE Connectivity’s organization strategy. With mostly-preserved naming conventions and design specifications, replacement parts are able to be easily sourced for long-lived installations without requiring extensive comparison between listings or major reworks on the system.

Standout Entrelec Connectivity Parts on The Aviation Mart

It should be noted that during Entrelec’s time as an independent company, many products were managed by a U.K. subsidiary by the name of Entrelec UK Ltd. As such, a variety of legacy and current-production Entrelec parts are categorized on The Aviation Mart under the name "Entrelec Uk,” as well as “Entrelec” and “Entrelec Inc” identifiers.

DIN Rail Terminal Blocks

For context, a DIN rail is a globally standardized metal mount that acts as a central location for control devices in a compact enclosure to be secured in place with minimal effort. Made to snap onto these assemblies, a DIN rail terminal block is an insulated modular component that facilitates the transition of signals or power from one wire to another via an internal conductive current bar. This eliminates the need for messy wire splicing and allows connections to be more easily modified or tested.

Entrelec’s terminal blocks are largely categorized by their termination technology, including options like:

• SNA Series (Screw Clamp Technology): Perhaps the most ubiquitous line in this portfolio, SNA Series blocks use a steel clamp to press the conductor against a tin-plated copper busbar, displaying favorably high locking torque for industrial machinery.
• ADO System (Insulation Displacement): The ADO terminal block allows wire connections without requiring the insulation to be stripped, thanks to a bifurcated terminal design that features two sharp, parallel blades. When the wire is pressed into this slot, the blades slice through the outer insulation to make a cold-welded, vibration-proof contact with the inner conductor.
• SNK Series & PI-Spring (Push-In and Spring): Representing the modern era of Entrelec engineering, the SNK series introduces PI-Spring technology. The stainless-steel spring holds the wire against a tin-plated copper busbar, causing constant tension that compensates for the wire settling over time. Toolless push-in insertion is possible for solid or ferruled wires, while a screwdriver can be used for stranded wires.

To form a comprehensive ecosystem for power and signal routing, Entrelec also has many specialized DIN rail components purpose-built for safety, diagnostics, and high-load distribution functions. One of many examples is their DBL series power distribution blocks, which are meant to pass electricity from a single large incoming cable to multiple outgoing circuits. These blocks provide an alternative to traditional open bus bars, saving a significant amount of rail space.

Relay Interfaces and Signal Conditioning

While terminal blocks create the physical connection of wires, active electronic interface modules handle the logic, signal isolation, and conversion required between a control device and the sensors or equipment it manages. To sustain this functionality, they are built to protect sensitive control hardware from the electrical noise, voltage spikes, and grounding issues inherent in heavy industrial machinery. Some of the options in this category that you can peruse include:

• Relay Interface Modules: Entrelec’s interface modules provide galvanic isolation to safely bridge low-power control signals with high-power AC or DC loads. A notable example from the catalog is the Series 10 000, which features an ultra-slim 6mm width to maximize rail density in crowded cabinets. As an added bonus, these relay modules often include integrated LED status indicators for immediate visual diagnostics.
• Analog Signal Converters: These devices are meant to interface with field sensors that monitor physical properties like temperature, pressure, or flow, which produce raw analog signals that are either too weak or too noisy for a standard controller to read accurately over long distances. Entrelec converters like the C.A.I.S. Series take these varying signals and convert them into a standard, linearized format like 4-20mA or 0-10V.

Navigate the "Entrelec Uk" Catalog on The Aviation Mart

Whether you are maintaining older systems or planning new builds, Aviation Mart’s "Entrelec Uk electronic parts" are the invaluable resource for purchasing Entrelec connectivity parts and more. We at ASAP Semiconductor pride ourselves on ensuring that every item offered through this website is validated for use and comes from a source that both we and our customers can trust, with all traceability and certification documentation included in shipment.

As this website is so much more than our Entrelec Uk electronic parts, you can also use the provided catalog and search tools to find Contemporary Control parts, narrow down a specific 1SU41020 aircraft part or LK3DU3 Schneider Electric part number, and beyond. On The Aviation Mart, we aim to bridge the gap between multiple sectors with thousands of components, all of which are ready for purchase with swift lead times and competitive pricing. To see why so many professionals rely on our products and services, check out our inventory and connect with our team today!

1. selena downey
2. Posted on February 22, 2026
aviation

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