TE Connectivity 1SNA166552R2700 is an ENTRELEC ESSAILEC FIT-1/4-G-2 four-pole voltage test plug with BRE-T 2.5 connections and socket-side insertion positions 1-2-3-4 for electrical testing, metering and protection circuits.
£41.27
The TE Connectivity 1SNA166552R2700, also identified as ENTRELEC FIT-1/4-G-2, is a 4-pole voltage test plug designed for use with ESSAILEC measuring and testing blocks. It provides a practical plug-in interface for accessing voltage circuits during commissioning, measurement, monitoring and maintenance activities in protection, metering and instrumentation systems.
This version is configured for socket-side insertion positions 1-2-3-4 and incorporates BRE-T 2.5 connections. The ESSAILEC plug-and-socket system allows engineers to connect test equipment quickly while reducing the need to disturb permanent field wiring.
With a compact body measuring approximately 44 mm wide × 83.5 mm deep and a net weight of approximately 70 g, the FIT-1/4-G-2 is suited to protection panels, switchgear, substations and industrial electrical assemblies where reliable access to voltage measurement circuits is required.
ESSAILEC measuring and testing blocks are designed to simplify testing of secondary current and voltage circuits associated with transformers, sensors, meters and protection relays. By combining a dedicated plug with a matching socket, engineers can access circuits for measurement, monitoring, injection and maintenance without repeatedly altering permanent wiring.
The FIT-1/4-G-2 provides a four-pole interface for voltage circuits and forms part of this modular test architecture. Its defined insertion arrangement helps maintain organised connections and supports fast, repeatable testing in electrical protection and measurement installations.
| Manufacturer | TE Connectivity / ENTRELEC |
|---|---|
| Series | ESSAILEC |
| Model | FIT-1/4-G-2 |
| Manufacturer part number | 1SNA166552R2700 |
| Product type | Voltage test plug |
| Number of poles | 4 |
| Connection | BRE-T 2.5 |
| Socket-side insertion | 1-2-3-4 |
| Product width | 44 mm |
| Product depth | 83.5 mm |
| Product net weight | approx. 70 g |
| Customs tariff number | 85369010 |
| EAN | 3472591665529 |
| Pack quantity | 1 |
The 1SNA166552R2700 is a 4-pole ESSAILEC voltage test plug used to connect test equipment to voltage measurement, metering and protection circuits.
The manufacturer model designation is FIT-1/4-G-2.
The FIT-1/4-G-2 is a 4-pole voltage test plug.
This version is configured for socket-side insertion positions 1-2-3-4.
It is typically used in substations, switchgear, protection panels, metering systems and industrial electrical installations incorporating ESSAILEC test blocks.
TE Connectivity’s ENTRELEC ESSAILEC system provides modular test connectivity for protection, metering and instrumentation circuits, helping engineers perform commissioning, measurement and maintenance tasks efficiently without unnecessary disturbance of permanent wiring.
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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...