TE Connectivity PC-R-VA 1SNA166765R0400 is a shunted ESSAILEC polarity test socket with rear panel mounting, ring-tongue connections, coding pins and guiding pins for industrial measurement and protection circuits.
£145.87
The TE Connectivity PC-R-VA 1SNA166765R0400 is an industrial ESSAILEC polarity test socket designed for safe and efficient testing of secondary measurement, metering and protection circuits. Part of the established TE Connectivity ENTRELEC ESSAILEC series, it provides a dedicated plug-in interface that enables engineers to carry out electrical tests while minimising disturbance to permanent panel wiring.
The PC-R-VA features a shunted contact configuration and is designed for rear panel mounting. Ring-tongue connections provide secure termination of the permanent circuit wiring, while integrated coding and guiding pins help ensure correct plug positioning and reduce the risk of connection errors during testing.
Designed as part of the modular ESSAILEC measuring and testing system, the 1SNA166765R0400 is suitable for applications involving current and voltage measurement, monitoring, signal injection, meter servicing and protection-relay maintenance. Its dedicated test interface supports fast, repeatable commissioning and maintenance procedures in industrial switchboards, protection cabinets and power-system panels.
ESSAILEC test blocks are designed to simplify current and voltage measurement, monitoring, signal injection and the servicing or replacement of meters and protection relays installed in secondary transformer and sensor circuits. The PC-R-VA provides a dedicated fixed socket within this system, allowing compatible test equipment to be connected when commissioning or maintenance work is required.
The combination of shunted contacts, coded plug compatibility and positive mechanical guidance supports repeatable testing while helping prevent incorrect connections. This makes the PC-R-VA particularly suitable for electrical installations where test access is required throughout the operating life of switchgear, metering and protection equipment.
| Manufacturer | TE Connectivity |
|---|---|
| Product family | ENTRELEC ESSAILEC |
| Model | PC-R-VA |
| Part number | 1SNA166765R0400 |
| Product type | Polarity test socket |
| Contact configuration | Shunted |
| Connection type | Ring tongue |
| Mounting type | Back / rear panel mounting |
| Coding | Coding pins |
| Plug alignment | Guiding pins |
| Compatible system | ESSAILEC measuring and testing blocks |
| Typical circuit applications | Measurement, metering and protection circuits |
| Pack quantity | 1 |
| EAN | 3472591667653 |
The PC-R-VA is an ESSAILEC polarity test socket designed to provide controlled test access to secondary electrical circuits used in measurement, metering, monitoring and protection systems.
Yes. The PC-R-VA has a shunted contact configuration, providing the defined circuit arrangement required for its ESSAILEC testing application.
The socket uses ring-tongue connections, providing secure termination for permanent secondary-circuit wiring.
The 1SNA166765R0400 is designed for back or rear panel mounting, allowing it to be incorporated into industrial switchboards, metering panels and protection cabinets.
Yes. The socket incorporates coding pins and guiding pins to help ensure correct mating with compatible ESSAILEC test plugs and reduce the risk of incorrect test connections.
TE Connectivity ENTRELEC ESSAILEC test components provide a proven plug-and-play interface for electrical measurement and protection circuits, helping engineers perform commissioning, diagnostics and maintenance efficiently while reducing unnecessary disturbance of permanent secondary-circuit wiring.
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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...