TE Connectivity 1SNA173933R1400 AL2.5-1 is a 2.5 mm test socket designed to provide convenient electrical measurement and diagnostic access on compatible ENTRELEC M4/6.D2 terminal block assemblies.
£0.63
The TE Connectivity 1SNA173933R1400, also identified as the AL2.5-1, is a 2.5 mm test socket designed for compatible ENTRELEC SNA terminal block assemblies. Originally referenced as an “alvéole élastique”, this terminal block accessory provides a dedicated test interface for electrical measurement, commissioning and diagnostic work in industrial control panels.
The AL2.5-1 is specifically associated with compatible M4/6.D2 terminal block configurations. By providing a dedicated socket for test access, it allows technicians to connect suitable test equipment at the terminal assembly while helping preserve the organisation and integrity of the permanent field wiring.
Part number 1SNA173933R1400 forms part of the established ENTRELEC SNA accessories range and is supplied in a manufacturer pack quantity of 10 pieces. Its compact design makes it particularly useful for control, automation and instrumentation installations where convenient electrical test access is required.
Dedicated test sockets provide a convenient interface between terminal block assemblies and electrical measuring equipment. This allows commissioning and maintenance engineers to check circuit conditions efficiently while reducing the need to loosen conductors or otherwise interfere with permanent wiring connections.
The AL2.5-1 is designed as a manufacturer-specific accessory for compatible ENTRELEC M4/6.D2 terminal assemblies. Its 2.5 mm test interface makes it a useful component for panel builders and maintenance teams requiring organised and repeatable test access within industrial automation systems.
| Manufacturer | TE Connectivity / ENTRELEC |
|---|---|
| Series | SNA Accessories |
| Model | AL2.5-1 |
| Manufacturer part number | 1SNA173933R1400 |
| Product type | Terminal block test socket |
| Accessory category | Terminal block tools and accessories |
| Test socket size | 2.5 mm |
| Application | Electrical testing and measurement |
| Compatible terminal family | M4/6.D2 |
| Pack quantity | 10 pieces |
| Country of origin | France |
| Barcode | 3472591739336 |
| ECCN | EAR99 |
The 1SNA173933R1400 is an AL2.5-1 2.5 mm test socket designed for electrical testing on compatible ENTRELEC terminal block assemblies.
The AL2.5-1 is specifically associated with compatible M4/6.D2 terminal block configurations.
The AL2.5-1 is specified as a 2.5 mm test socket.
It provides a dedicated electrical test point that supports measurement, commissioning, troubleshooting and maintenance of compatible terminal block circuits.
The 1SNA173933R1400 has a standard manufacturer pack quantity of 10 pieces.
TE Connectivity ENTRELEC SNA test accessories are used by panel builders, automation engineers and electrical maintenance professionals to provide convenient, organised and serviceable test access within industrial terminal block systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...