TE Connectivity TF-D-VA 1SNA166746R0100 is an ENTRELEC ESSAILEC closed-contact voltage test socket with half-base mounting and ring-tongue connections for protection, metering, voltage transformer and electrical testing circuits.
£125.95
The TE Connectivity TF-D-VA (1SNA166746R0100) is a specialised ESSAILEC closed-contact voltage test socket designed for electrical protection, metering, measurement and voltage transformer circuits. Part of the established TE Connectivity ENTRELEC ESSAILEC range, it provides a dependable interface for testing, commissioning and maintenance within industrial and utility electrical systems.
The TF-D-VA features closed contacts, a half-base mounting arrangement and ring-tongue connections for secure permanent wiring. This configuration is designed for professional voltage testing systems where engineers require reliable access to secondary circuits while maintaining an organised and serviceable electrical installation.
With compact dimensions of approximately 57 × 44 × 63 mm and a net weight of approximately 119 g, the TF-D-VA provides a robust connection solution for protection panels, switchgear and metering equipment. Its ESSAILEC format also supports compatible test plugs and accessories, allowing structured testing procedures without repeatedly disturbing permanent field wiring.
ESSAILEC test blocks provide dedicated interfaces between permanently installed electrical circuits and test or measurement equipment. This modular approach allows engineers to perform commissioning, voltage measurement, monitoring and maintenance through an organised test interface while reducing the need to disconnect permanent installation wiring.
The TF-D-VA combines closed contacts with half-base mounting and ring-tongue termination, making it particularly suitable for voltage transformer and protection applications. Its compatibility with the wider ESSAILEC system enables engineers to create structured testing arrangements for switchgear, substations and electrical metering installations.
| Manufacturer | TE Connectivity / ENTRELEC |
|---|---|
| Series | ESSAILEC |
| Model | TF-D-VA |
| Manufacturer part number | 1SNA166746R0100 |
| Product type | Voltage test socket |
| Contact configuration | Closed contacts |
| Mounting type | Half-base mounting |
| Connection type | Ring tongue |
| Conductor cross-section | 10 mm² |
| Application | Voltage measurement, protection and testing circuits |
| Height | 57 mm |
| Width | 44 mm |
| Depth | 63 mm |
| Weight | approx. 119 g |
| Pack quantity | 1 |
| Country of origin | France |
The TF-D-VA is an ESSAILEC voltage test socket designed for voltage transformer, protection, metering, measurement, commissioning and electrical testing circuits.
The TF-D-VA uses a closed-contact configuration designed for specialised ESSAILEC voltage measurement and testing systems.
The TE Connectivity 1SNA166746R0100 uses a half-base mounting arrangement for integration into compatible ESSAILEC installations.
The TF-D-VA uses ring-tongue connections to provide secure permanent conductor termination within protection and metering systems.
The TE Connectivity TF-D-VA measures approximately 57 × 44 × 63 mm and has a net weight of approximately 119 g.
TE Connectivity ENTRELEC ESSAILEC test blocks provide dependable connection and testing interfaces for voltage measurement, protection, metering and commissioning applications across industrial and utility electrical systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...