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1sna166925r1500 – to-e-va-12-12
TE Connectivity TO-E-VA-12.12 1SNA166925R1500 is an ESSAILEC 8 A coded voltage transformer test socket with 12.12 coding, open contacts, flush mounting, rear ring-tongue connections and an included protective lid for professional measurement and testing circuits.
£104.57
Why Choose the TE Connectivity TO-E-VA-12.12 ESSAILEC Coded Voltage Test Socket?
The TE Connectivity TO-E-VA-12.12 1SNA166925R1500 is a professional ESSAILEC coded voltage transformer test socket designed for measurement, monitoring, testing and maintenance of secondary voltage circuits. Part of the established TE Connectivity ENTRELEC ESSAILEC range, it provides a controlled interface between permanent installation wiring and compatible electrical test equipment.
This version features 12.12 coding, open contacts, flush front-panel mounting and rear ring-tongue connections. The coding system helps prevent connection errors between different ESSAILEC circuits and protects against reverse plug insertion, making the TO-E-VA-12.12 particularly suitable for installations where clearly defined test connections are essential.
The TO-E-VA-12.12 is rated at 8 A with a 4 kV impulse withstand voltage and provides IP20 protection at the socket and IP40 with its lid fitted. The coded version is supplied with its lid and coding included and weighs approximately 200 g, providing a ready-configured solution for professional voltage-transformer testing installations.
Key Advantages
- Purpose-designed ESSAILEC voltage transformer test socket.
- 12.12 coding helps prevent incorrect plug-to-socket connections.
- Open-contact configuration for controlled voltage testing circuits.
- Flush front-panel mounting provides convenient access for testing.
- Rear ring-tongue termination keeps permanent wiring organised behind the panel.
- Supplied with lid and coding included for a coordinated installation.
Key Features
- TE Connectivity ENTRELEC TO-E-VA-12.12 test socket.
- Part of the ESSAILEC measuring and testing system.
- Designed for voltage-transformer secondary circuits.
- 12.12 coded socket configuration.
- Open contacts.
- Flush mounting.
- Ring-tongue connections.
- 8 A rated current.
- 4 kV rated impulse withstand voltage.
- IP20 / IP40 protection without / with lid.
Coded Test Access for Voltage Transformer Circuits
ESSAILEC test blocks provide dedicated interfaces for operations including voltage measurement, monitoring, signal injection, commissioning and the servicing or replacement of meters and protection relays. By using a plug-and-socket test interface, technicians can access secondary circuits without repeatedly disturbing permanent installation wiring.
The 12.12 coding system used by the TO-E-VA-12.12 provides an additional safeguard by ensuring that only a correspondingly coded plug is connected to the intended socket position. Together with protection against reverse insertion, this helps reduce connection errors in installations containing multiple measurement and protection circuits.
Typical Applications
- Voltage-transformer secondary circuits.
- Electrical energy metering systems.
- Protection relay testing and commissioning.
- Voltage measurement and monitoring panels.
- Industrial switchboards and control systems.
- Power distribution and substation installations.
Technical Specifications
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| Terminal Type | Disconnect / Test | |
|---|---|---|
| Product Series | TE Essailec | |
| Colour | Grey | |
| Manufacturer | TE Connectivity / ENTRELEC | |
| Series | ESSAILEC | |
| Model | TO-E-VA-12.12 | |
| Part number | 1SNA166925R1500 | |
| Product type | Coded voltage transformer test socket | |
| Application | Voltage-transformer testing and measurement circuits | |
| Coding | 12.12 | |
| Contact configuration | Open contacts | |
| Mounting | Flush front-panel mounting | |
| Connection type | Rear ring-tongue connection | |
| Rated current | 8 A | |
| Rated impulse withstand voltage | 4 kV | |
| Short-circuit current | 25 A for 5 s to 800 A for 25 ms | |
| Pollution degree | 3 | |
| Protection without / with lid | IP20 / IP40 | |
| Working temperature | -10 to +55 °C | |
| Storage temperature | -25 to +70 °C | |
| Colour | Grey | |
| Lid | Included | |
| Coding components | Included | |
| Net weight | approx. 200 g | |
| Pack quantity | 1 | |
| EAN / GTIN | 3472591669251 |
Frequently Asked Questions
What is the TE Connectivity TO-E-VA-12.12 1SNA166925R1500 used for?
The TO-E-VA-12.12 is an ESSAILEC coded voltage transformer test socket designed for measurement, monitoring, testing and maintenance of secondary voltage circuits.
What does the 12.12 designation mean?
The 12.12 designation identifies the socket coding arrangement. ESSAILEC coding helps ensure compatibility between the intended socket and correspondingly coded test plug, reducing the risk of connection errors between different circuits.
How is the TO-E-VA-12.12 installed?
The socket is designed for flush front-panel mounting and uses rear ring-tongue connections for permanent circuit wiring.
What protection rating does TE Connectivity 1SNA166925R1500 provide?
The ESSAILEC socket provides IP20 protection without its lid and IP40 protection with the lid correctly fitted.
Are the lid and coding supplied with the TO-E-VA-12.12?
Yes. The TO-E-VA-12.12 coded version is supplied with its lid and coding included, and the complete unit has an approximate weight of 200 g.
Trusted ESSAILEC Test Connection Technology
TE Connectivity ENTRELEC ESSAILEC test blocks provide coded, purpose-designed interfaces for industrial electrical measurement and protection circuits, helping engineers perform testing, commissioning and maintenance through organised and dependable secondary-circuit connections.
