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1sna166743r0600 – socket to e va
TE Connectivity TO-E-VA 1SNA166743R0600 is an 8 A, 400 V flush-mounted ESSAILEC voltage test socket with open contacts and ring-tongue connections for industrial metering, measurement and protection circuits.
£85.00
Why Choose the TE Connectivity TO-E-VA 1SNA166743R0600 Voltage Test Socket?
The TE Connectivity TO-E-VA 1SNA166743R0600 is a professional ESSAILEC voltage test socket designed to provide reliable test access to voltage measurement, metering and protection circuits. Part of the established TE Connectivity ENTRELEC ESSAILEC series, this socket is designed for industrial electrical systems where safe, repeatable testing and straightforward maintenance are essential.
The TO-E-VA uses an open-contact configuration and is designed for flush mounting in electrical panels. Its ring-tongue connection system accommodates conductors from 0.34–10 mm², while silver-plated conductive parts provide dependable electrical performance. The socket works with compatible ESSAILEC plugs to simplify commissioning, measurement and maintenance without repeatedly disturbing permanent panel wiring.
With a rated current of 8 A and rated voltage of 400 V, the 1SNA166743R0600 is well suited to voltage-transformer and secondary measurement circuits. Its compact 74 × 50 × 57 mm construction, grey polycarbonate body and dedicated test-system architecture make it a practical solution for switchboards, protection panels and industrial metering installations.
Key Advantages
- Purpose-designed ESSAILEC voltage test socket for professional electrical testing.
- Open-contact configuration for controlled voltage-circuit testing.
- 8 A rated current and 400 V rated voltage.
- Flush-mounted design provides convenient front-panel test access.
- Ring-tongue terminations provide secure permanent wiring connections.
- Supports conductor sizes from 0.34–10 mm².
- Plug-in ESSAILEC architecture reduces unnecessary disturbance of installed wiring.
Key Features
- TE Connectivity ENTRELEC ESSAILEC series.
- TO-E-VA voltage socket configuration.
- Open contacts.
- Flush mounting configuration.
- Ring-tongue connection system.
- 8 A nominal current.
- 400 V rated voltage.
- Grey polycarbonate body.
- Silver-plated conductive parts.
- Compatible with selected ESSAILEC universal and voltage test plugs.
Reliable Voltage Testing for Metering and Protection Systems
ESSAILEC test blocks provide a modular method of accessing secondary measurement circuits during commissioning, diagnostics and maintenance. The TO-E-VA forms the fixed socket interface and allows compatible test plugs to be connected when technicians need to measure signals, verify instrumentation or work on protection and metering equipment.
The flush-mounted configuration provides convenient access from the front of an electrical panel, while permanent wiring is securely terminated using ring-tongue connections. This arrangement is particularly valuable in installations requiring regular testing because it reduces repeated disconnection and reconnection of field conductors.
Typical Applications
- Voltage-transformer secondary circuits.
- Protection relay testing and commissioning.
- Industrial voltage measurement systems.
- Electrical metering and instrumentation panels.
- Power distribution switchboards.
- Substation control and protection systems.
- Routine electrical testing and maintenance.
Technical Specifications
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| Terminal Type | Disconnect / Test | |
|---|---|---|
| Product Series | TE SNA | |
| Colour | Grey | |
| Manufacturer | TE Connectivity | |
| Product family | ENTRELEC ESSAILEC | |
| Model | TO-E-VA | |
| Part number | 1SNA166743R0600 | |
| Product type | Voltage test socket | |
| Contact configuration | Open contacts | |
| Rated current | 8 A | |
| Rated voltage | 400 V | |
| Connection type | Ring tongue | |
| Connecting capacity | 0.34–10 mm² | |
| Lug hole diameter | 3 mm | |
| Maximum lug width | 7.5 mm | |
| Body material | Polycarbonate | |
| Conductive parts | Silver plated | |
| Colour | Grey | |
| Mounting type | Flush mounting | |
| Product height | 74 mm | |
| Product width | 50 mm | |
| Product depth | 57 mm | |
| Product net weight | 170 g | |
| Compatible system | ESSAILEC measuring and testing blocks | |
| EAN | 3472591667431 |
Frequently Asked Questions
What is the TE Connectivity 1SNA166743R0600 used for?
The 1SNA166743R0600 is an ESSAILEC voltage test socket designed to provide test access to voltage measurement, metering and protection circuits in industrial electrical systems.
What are the electrical ratings of the TO-E-VA?
The TO-E-VA has a rated current of 8 A and a rated voltage of 400 V.
What type of contacts does the TO-E-VA use?
The TO-E-VA is an open-contact voltage socket, designed as part of the ESSAILEC modular measuring and testing system.
What conductor sizes can the 1SNA166743R0600 accept?
Its ring-tongue connection arrangement supports conductor sizes from 0.34–10 mm², with a 3 mm lug-hole diameter and maximum lug width of 7.5 mm.
How is the TO-E-VA installed?
The TO-E-VA is designed for flush mounting, providing an accessible test interface on the front of switchboards, protection panels and electrical metering cabinets.
Trusted for Professional Electrical Testing
TE Connectivity ENTRELEC ESSAILEC components provide a proven modular interface for electrical measurement and testing, helping engineers perform commissioning, diagnostics and maintenance efficiently across industrial metering, protection and power-distribution systems.
