TE Connectivity FIT-2/4-I 1SNA166672R0700 is a 4-pole ESSAILEC voltage test plug with coded and locking features for testing, commissioning and maintenance of industrial voltage measurement and protection circuits.
£22.91
The TE Connectivity FIT-2/4-I 1SNA166672R0700 is a specialist 4-pole ESSAILEC voltage test plug designed for safe and convenient testing of voltage measurement, metering and protection circuits. Part of the established TE Connectivity ENTRELEC ESSAILEC series, it provides a plug-in interface for accessing secondary circuits during commissioning, monitoring, maintenance and diagnostic procedures.
The FIT-2/4-I is configured as a 4-pole plug with insertion positions 01-02-03-04. It incorporates one coding pin and four locking pins, helping ensure correct positioning and secure engagement with compatible ESSAILEC test sockets. This coded plug-and-socket architecture reduces the risk of incorrect connection between different test circuits and provides a practical solution for professional electrical testing.
Manufactured with a grey insulating body, the 1SNA166672R0700 measures approximately 63 mm high × 44 mm wide × 115 mm deep and weighs approximately 60 g. Contact pins are selected separately, allowing the plug to be configured for the required installation and wiring arrangement.
ESSAILEC measuring and testing blocks provide a modular method of accessing electrical measurement circuits for current and voltage testing, monitoring, signal injection and the maintenance or replacement of meters and protection relays. The FIT-2/4-I provides the plug interface required for selected voltage-transformer and voltage-sensor secondary circuit applications.
Its coding and locking features help technicians establish the correct test connection while reducing the risk of accidental mismatching between circuits. This makes the FIT-2/4-I particularly useful in switchboards and protection panels where dependable, repeatable test access is required throughout the service life of the installation.
| Manufacturer | TE Connectivity |
|---|---|
| Product family | ENTRELEC ESSAILEC |
| Model | FIT-2/4-I |
| Part number | 1SNA166672R0700 |
| Product type | Voltage test plug |
| Number of poles | 4 |
| Insertion positions | 01-02-03-04 |
| Coding | 1 coding pin (COP-FI-1) |
| Locking | 4 locking pins |
| Contact pins | BRE-T series contacts ordered separately |
| Colour | Grey |
| Product height | 63 mm |
| Product width | 44 mm |
| Product depth | 115 mm |
| Weight | approx. 60 g |
| Compatible system | ESSAILEC measuring and testing blocks |
| EAN | 3472591666724 |
The 1SNA166672R0700 is a 4-pole ESSAILEC voltage test plug used to provide test access to voltage measurement, metering and protection circuits during commissioning and maintenance.
The FIT-2/4-I has 4 poles arranged for insertion positions 01-02-03-04.
Yes. The plug is configured with one COP-FI-1 coding pin and four locking pins, helping ensure correct and secure connection to the compatible ESSAILEC socket.
The required BRE-T series contact pins are ordered separately, allowing suitable contacts to be selected for the intended wiring and test configuration.
The plug measures approximately 63 mm high × 44 mm wide × 115 mm deep and weighs approximately 60 g.
TE Connectivity ENTRELEC ESSAILEC test components provide a modular and dependable interface for voltage measurement, metering and protection circuits, helping electrical engineers perform commissioning, diagnostics and maintenance efficiently.
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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...