TE Connectivity 1SNA166576R2700 FIM20-I is a grey 20-pole ENTRELEC ESSAILEC multicircuit test plug designed for the M20-I-C5A reverse-mounting socket in transformer secondary, protection, metering and electrical measurement circuits.
£42.07
The TE Connectivity 1SNA166576R2700 is a specialised 20-pole multicircuit test plug designed for electrical measurement, protection and transformer secondary circuit testing. Also identified as the FIM20-I, this grey plug forms part of the established ENTRELEC ESSAILEC test block system and is designed for use with the compatible M20-I-C5A reverse-mounting socket.
The FIM20-I provides a removable multicircuit interface that enables engineers to connect test and measurement equipment without repeatedly altering permanent panel wiring. This plug-and-socket approach supports efficient commissioning, monitoring, injection testing, maintenance and replacement of meters or protection relays in secondary circuits associated with current and voltage transformers and sensors.
With a 20-pole configuration, the 1SNA166576R2700 provides extensive multicircuit connectivity in a single ESSAILEC interface. The associated system is rated at 400 V and 8 A with a 4 kV impulse withstand voltage, while separately ordered BRE-T contact pins allow conductor connections to be selected according to the application.
ESSAILEC test blocks provide a structured method of accessing secondary electrical circuits for current and voltage measurement, monitoring, injection testing, commissioning and maintenance. Combining a dedicated plug with a compatible socket allows engineers to perform test procedures through a repeatable interface rather than repeatedly disconnecting permanent wiring.
The FIM20-I is specifically designed for the M20-I-C5A reverse-mounting socket and provides 20 connection positions for complex multicircuit installations. This makes it particularly suitable for substations, switchgear, protection panels and metering systems where several secondary circuits need to be accessed through one organised test interface.
| Manufacturer | TE Connectivity / ENTRELEC |
|---|---|
| Series | ESSAILEC |
| Model | FIM20-I |
| Manufacturer part number | 1SNA166576R2700 |
| Product type | Multicircuit test plug |
| Number of poles | 20 |
| Mounting system | Reverse-mounting ESSAILEC system |
| Compatible socket | M20-I-C5A |
| Colour | Grey |
| Contact system | BRE-T contact pins ordered separately |
| Available BRE-T conductor sizes | 0.34, 0.75, 1, 1.5, 2.5 and 6 mm² |
| System rated voltage | 400 V |
| System rated current | 8 A |
| System impulse withstand voltage | 4 kV |
| Product net weight | approx. 53 g |
| EAN | 3472591665765 |
| Pack quantity | 1 |
The 1SNA166576R2700 FIM20-I is a 20-pole multicircuit ESSAILEC test plug used to provide removable access to electrical measurement, protection and transformer secondary circuits during testing, commissioning and maintenance.
The FIM20-I has a 20-pole configuration, providing a high-density test interface for multiple secondary circuit connections.
The FIM20-I is designed for use with the M20-I-C5A reverse-mounting ESSAILEC socket.
The required BRE-T contact pins are ordered separately. Compatible contacts are available for conductor sizes including 0.34, 0.75, 1, 1.5, 2.5 and 6 mm².
The associated ESSAILEC multicircuit system is rated at 400 V and 8 A with an impulse withstand voltage of 4 kV.
TE Connectivity ENTRELEC ESSAILEC test components provide structured and dependable access to transformer secondary, protection and measurement circuits, helping engineers perform commissioning, diagnostics and maintenance through a modular multicircuit plug-and-socket interface.
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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...