TE Connectivity 1SNA163043R2100 AL2 is a compact 2 mm screw-in test socket for compatible ENTRELEC terminal blocks, providing convenient electrical measurement and diagnostic access without disturbing permanent field wiring.
£0.49
The TE Connectivity 1SNA163043R2100, also known as the AL2, is a compact 2 mm test socket designed to provide convenient electrical test access on compatible ENTRELEC terminal blocks. This original terminal block accessory allows engineers and maintenance personnel to connect suitable test equipment without disturbing the permanent field wiring.
The AL2 test socket screws into the tapped test hole in the terminal block connector bar, creating a dedicated connection point for a compatible 2 mm test plug. This makes voltage measurement, continuity checking, commissioning and diagnostic work quicker and more organised while helping preserve the integrity of the installed conductor connections.
With a 2 mm socket diameter, compact construction and compatibility across numerous ENTRELEC SNA terminal block families, the AL2 is a useful accessory for industrial control panels, automation systems and electrical distribution equipment. It is commonly paired with the FC2 2 mm test plug and is supplied in standard packs of 50 pieces.
Test sockets provide a simple way to access electrical circuits during commissioning and maintenance without removing conductors from their terminals. The AL2 screws into the dedicated tapped hole in a compatible ENTRELEC terminal block connector bar, allowing a 2 mm test plug to be inserted whenever measurements or diagnostic checks are required.
This arrangement is particularly useful in densely wired industrial panels where repeatedly disturbing field connections can increase maintenance time and the possibility of wiring errors. When used with the compatible FC2 test plug, the 1SNA163043R2100 provides a practical interface for test instruments while leaving the normal terminal connections securely in place.
| Manufacturer | TE Connectivity / ENTRELEC |
|---|---|
| Series | ENTRELEC SNA Accessories |
| Model | AL2 |
| Manufacturer part number | 1SNA163043R2100 |
| Legacy catalogue number | 016304321 |
| Product type | Terminal block test socket |
| Test socket diameter | 2 mm |
| Installation method | Screw-in connection to tapped terminal block connector-bar test hole |
| Compatible test plug | FC2, 2 mm diameter |
| Typical application | Electrical testing and measurement access |
| Weight | approximately 0.9 g |
| EAN | 3472591630435 |
| Standard pack quantity | 50 |
The 1SNA163043R2100 is the TE Connectivity / ENTRELEC AL2 test socket, a terminal block accessory providing a 2 mm test connection for compatible ENTRELEC terminal blocks.
The AL2 has a 2 mm diameter test socket and is designed for use with compatible 2 mm test plugs, including the ENTRELEC FC2.
The AL2 is screwed into the tapped test hole in the connector bar of a compatible ENTRELEC terminal block, creating a convenient test point for diagnostic equipment.
The legacy ENTRELEC catalogue number corresponding to TE Connectivity part number 1SNA163043R2100 is 016304321.
The AL2 is used to provide temporary electrical test access without disconnecting the permanent terminal wiring, making it useful for commissioning, voltage measurements, diagnostics and maintenance of industrial electrical systems.
TE Connectivity ENTRELEC terminal accessories support efficient commissioning and maintenance of industrial electrical systems, with the AL2 providing a compact 2 mm test point for compatible terminal blocks while allowing permanent field wiring to remain securely connected.
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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...