TE Connectivity FIDE-2/4-2 1SNA166943R2700 is an orange 2-pole ENTRELEC ESSAILEC test plug supplied with 2.5 mm² BRE-T-2.5 contact pins for compatible DEO secondary-circuit test sockets.
£52.16
The TE Connectivity FIDE-2/4-2 1SNA166943R2700 is an orange 2-pole ESSAILEC test plug designed for use with compatible ENTRELEC test sockets in electrical protection and secondary-circuit applications. It provides a purpose-designed removable interface for test procedures involving protection relays, transformer secondary circuits and associated control equipment.
This FIDE-2/4-2 variant is supplied with 2.5 mm² BRE-T-2.5 contact pins, providing a ready-configured contact arrangement without separate coding pins. It is specifically listed for use with the DEO-E-A and DEO-D-VA ESSAILEC sockets, supporting a clearly defined combination for protection and trip-circuit test installations.
With a weight of approximately 105 g, the FIDE-2/4-2 forms part of the modular ESSAILEC platform developed for repeatable testing, measurement, monitoring, signal injection and maintenance. The plug-and-socket approach allows test equipment to interface with permanently installed secondary circuits without repeatedly altering the fixed panel wiring.
The ESSAILEC system provides a defined interface between permanently wired secondary circuits and removable test equipment. In protection and trip-circuit applications, this architecture allows technicians to perform commissioning, measurement and maintenance operations through dedicated plug-and-socket combinations rather than repeatedly disconnecting fixed conductors.
The FIDE-2/4-2 is supplied with its 2.5 mm² contact pins already specified and is matched to designated DEO socket configurations. This makes it a practical choice where a repeatable and clearly identifiable removable test connection is required in switchgear, protection panels and substation control equipment.
| Manufacturer | TE Connectivity |
|---|---|
| Brand / range | ENTRELEC |
| Series | ESSAILEC |
| Model | FIDE-2/4-2 |
| Manufacturer part number | 1SNA166943R2700 |
| Product type | ESSAILEC test plug |
| Number of poles | 2 |
| Colour | Orange |
| Contact pins | BRE-T-2.5 supplied |
| Contact-pin conductor size | 2.5 mm² |
| Coding pins | Not supplied / not required for this plug configuration |
| Compatible sockets | DEO-E-A and DEO-D-VA |
| Weight | approx. 105 g |
| System | ESSAILEC modular test-block system |
| Application | Secondary electrical test and protection circuits |
| Pack quantity | 1 |
| EAN | 3472591669435 |
The FIDE-2/4-2 is an orange 2-pole ENTRELEC ESSAILEC test plug supplied with 2.5 mm² contact pins for use with compatible secondary-circuit test sockets.
Yes. This FIDE-2/4-2 configuration is supplied with BRE-T-2.5 contact pins for 2.5 mm² conductors, so separate contact pins do not need to be selected for the standard configuration.
No. Manufacturer ESSAILEC data specifies this particular FIDE-2/4-2 configuration as being supplied without coding pins.
The FIDE-2/4-2 is specified for use with compatible DEO-E-A and DEO-D-VA ESSAILEC sockets.
The plug is suited to ESSAILEC-equipped protection panels, switchgear, substations and secondary electrical test systems where removable access is required for commissioning, testing or maintenance.
TE Connectivity ENTRELEC ESSAILEC plugs and sockets provide a modular interface for measurement, monitoring, commissioning and protection applications where controlled and repeatable access to secondary electrical circuits is required.
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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...