TE Connectivity FIT-2/1-2 1SNA166644R0300 is a red two-pole ESSAILEC voltage test plug with two 4 mm outlets, designed for convenient voltage measurement and testing in compatible electrical test-block systems.
£35.58
The TE Connectivity FIT-2/1-2 1SNA166644R0300 is a compact two-pole voltage test plug designed for use with compatible ESSAILEC measuring and testing blocks. Part of the established TE Connectivity ENTRELEC ESSAILEC range, it provides a convenient interface for accessing voltage circuits during electrical measurement, testing, commissioning and maintenance operations.
The FIT-2/1-2 features a red housing and provides two 4 mm test outlets positioned on the left, enabling suitable test equipment to be connected to the voltage circuit. Its dedicated ESSAILEC format helps engineers perform testing operations through the installed test system without unnecessary disturbance to permanent panel wiring.
With compact dimensions of approximately 51 × 8.8 × 65 mm (H × W × D) and a net weight of approximately 23 g, the FIT-2/1-2 is easy to handle and store as part of an electrical test kit. It is suited to industrial switchboards, protection systems, metering installations and other applications using ESSAILEC voltage test connections.
ESSAILEC measuring and testing blocks provide dedicated connection points for testing secondary electrical circuits used with metering, monitoring and protection equipment. Compatible voltage plugs allow technicians to connect measuring instruments through the test interface, helping simplify commissioning, troubleshooting and routine maintenance procedures.
The FIT-2/1-2 provides a compact two-pole interface with standard 4 mm test connections, making it suitable for professional test leads and measuring equipment. Its dedicated ESSAILEC construction supports consistent connection to compatible test-block systems used throughout industrial and power-distribution installations.
| Manufacturer | TE Connectivity / ENTRELEC |
|---|---|
| Series | ESSAILEC |
| Model | FIT-2/1-2 |
| Part number | 1SNA166644R0300 |
| Product type | Voltage test plug |
| Application | ESSAILEC voltage measuring and testing circuits |
| Number of poles | 2 |
| Test outlets | 2 × 4 mm |
| Outlet position | Left |
| Colour | Red |
| Height | 51 mm |
| Width | 8.8 mm |
| Depth | 65 mm |
| Net weight | 23 g |
| Pack quantity | 1 |
| EAN | 3472591666441 |
The FIT-2/1-2 is a two-pole ESSAILEC voltage test plug used to provide convenient test access to compatible voltage circuits during measurement, commissioning and maintenance.
The FIT-2/1-2 has a two-pole configuration designed for voltage testing applications.
The plug provides two 4 mm test outlets positioned on the left for connection of compatible electrical test equipment.
The FIT-2/1-2 voltage plug has a red housing for clear visual identification within the ESSAILEC test system.
The FIT-2/1-2 measures approximately 51 × 8.8 × 65 mm in height, width and depth and has a net weight of approximately 23 g.
TE Connectivity ENTRELEC ESSAILEC measuring and testing products provide dedicated interfaces for electrical metering, protection and commissioning applications, helping engineers perform testing and maintenance efficiently while retaining an organised industrial connection system.
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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...