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1sna166576r2700 – fim20-i
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.
£27.35
Why Choose the TE Connectivity 1SNA166576R2700 FIM20-I ESSAILEC Test Plug?
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.
Key Advantages
- Purpose-designed 20-pole multicircuit test plug for electrical protection and measurement systems.
- Part of the established TE Connectivity / ENTRELEC ESSAILEC test block range.
- Designed for use with the M20-I-C5A reverse-mounting socket.
- Provides removable test access while minimising disturbance of permanent field wiring.
- Supports simultaneous testing and measurement across multiple secondary circuit connections.
- Compatible with separately selected BRE-T contact pins for different conductor sizes.
Key Features
- TE Connectivity / ENTRELEC ESSAILEC range.
- FIM20-I multicircuit test plug.
- 20-pole configuration.
- Designed for reverse-mounting ESSAILEC installations.
- Compatible with the M20-I-C5A socket.
- Grey insulating housing.
- Uses separately ordered BRE-T contact pins.
- Suitable for transformer secondary, protection, metering and measurement circuits.
Reliable Multicircuit Access for Electrical Testing
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.
Typical Applications
- Current and voltage transformer secondary circuits.
- Protection relay testing and commissioning.
- Electrical energy metering systems.
- Substation protection and control panels.
- Switchgear measurement and maintenance circuits.
- Industrial multicircuit electrical testing systems.
Technical Specifications
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| Terminal Type | Disconnect / Test | |
|---|---|---|
| Connection | Pluggable | |
| Product Series | TE Essailec | |
| Colour | Grey | |
| 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 |
Frequently Asked Questions
What is the TE Connectivity 1SNA166576R2700 used for?
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.
How many poles does the FIM20-I have?
The FIM20-I has a 20-pole configuration, providing a high-density test interface for multiple secondary circuit connections.
Which socket is compatible with the FIM20-I?
The FIM20-I is designed for use with the M20-I-C5A reverse-mounting ESSAILEC socket.
Are contact pins included with the 1SNA166576R2700?
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.
What are the electrical ratings of the FIM20-I ESSAILEC system?
The associated ESSAILEC multicircuit system is rated at 400 V and 8 A with an impulse withstand voltage of 4 kV.
Trusted Test Connectivity for Electrical Protection Systems
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.
