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1sna166945r2100 – to-i-va-2
TE Connectivity / ENTRELEC TO-I-VA-2 1SNA166945R2100 is a grey ESSAILEC open-contact reverse-mounting voltage test socket with ring-tongue connections for voltage transformer testing and measurement circuits.
£76.71
Why Choose the TE Connectivity TO-I-VA-2 1SNA166945R2100 ESSAILEC Voltage Test Socket?
The TE Connectivity / ENTRELEC TO-I-VA-2 1SNA166945R2100 is an ESSAILEC voltage test socket designed for testing and measurement circuits associated with voltage transformers. Part of the established ENTRELEC ESSAILEC test block range, this socket provides a dedicated interface for safe and organised electrical testing in protection, metering and power distribution installations.
The TO-I-VA-2 features an open-contact configuration and reverse mounting, making it suitable for installations requiring rear-connected test circuitry. Its ring-tongue termination arrangement provides a robust connection method for conductors terminated with suitable cable lugs, while the grey housing provides clear identification within an ESSAILEC assembly.
Designed specifically for voltage transformer applications, the TO-I-VA-2 supports compatible ESSAILEC test plugs including the reverse-mounting FIT-2/4-I. Its industrial construction, dedicated test-block architecture and compact format make it suitable for switchboards, protection panels, metering systems and other electrical installations where dependable access to voltage circuits is required.
Key Advantages
- Purpose-designed ESSAILEC socket for voltage transformer test and measurement circuits.
- Open-contact configuration for controlled access to voltage circuits.
- Reverse-mounting design for suitable panel and switchboard installations.
- Ring-tongue connection arrangement provides secure conductor termination.
- Compatible with the FIT-2/4-I reverse-mounting ESSAILEC plug.
- Supports organised testing, commissioning and maintenance of protection and metering systems.
Key Features
- TE Connectivity / ENTRELEC ESSAILEC series.
- TO-I-VA-2 product designation.
- Designed for voltage transformer applications.
- Open contacts.
- Reverse mounting.
- Ring-tongue termination arrangement.
- Grey housing colour.
- Compatible with FIT-2/4-I test plugs.
- Designed for industrial testing and measurement installations.
- Supplied as an individual ESSAILEC socket assembly.
Reliable Test Access for Voltage Transformer Circuits
ESSAILEC test blocks provide a structured connection interface between electrical measurement circuits and test equipment. In voltage transformer applications, this arrangement helps technicians carry out commissioning, diagnostic and maintenance procedures through a dedicated test interface rather than relying on temporary or improvised circuit connections.
The TO-I-VA-2 combines open contacts with a reverse-mounting format and ring-tongue connections. When integrated with compatible ESSAILEC components such as the FIT-2/4-I plug, it provides a practical test interface for voltage transformer secondary circuits used in protection, metering and electrical monitoring systems.
Typical Applications
- Voltage transformer secondary circuits.
- Protection and metering panels.
- Electrical switchgear and switchboards.
- Power distribution installations.
- Utility protection and measurement systems.
- Industrial electrical control panels.
- Commissioning and maintenance test circuits.
- Electrical monitoring and instrumentation systems.
Technical Specifications
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| Terminal Type | Disconnect / Test | |
|---|---|---|
| Product Series | TE Essailec | |
| Colour | Grey | |
| Manufacturer | TE Connectivity / ENTRELEC | |
| Series | ESSAILEC | |
| Model | TO-I-VA-2 | |
| Manufacturer part number | 1SNA166945R2100 | |
| Product type | Voltage test socket / measuring and testing block | |
| Application | Voltage transformer testing and measurement | |
| Contact configuration | Open contacts | |
| Mounting arrangement | Reverse mounting | |
| Connection type | Ring-tongue | |
| Colour | Grey | |
| Compatible test plug | FIT-2/4-I | |
| Compatible plug part number | 1SNA166672R0700 | |
| Net height | 115.7 mm | |
| Net width | 44 mm | |
| Net depth | 63 mm | |
| Net weight | 190 g | |
| Pack quantity | 1 | |
| EAN | 3472591669459 |
Frequently Asked Questions
What is the TE Connectivity TO-I-VA-2 1SNA166945R2100 used for?
The TO-I-VA-2 is an ESSAILEC voltage test socket designed to provide a test and measurement interface for voltage transformer circuits in protection, metering and electrical distribution systems.
What contact configuration does the TO-I-VA-2 use?
The TO-I-VA-2 has an open-contact configuration designed for ESSAILEC voltage testing applications.
How is the TO-I-VA-2 mounted?
The 1SNA166945R2100 is designed for reverse mounting, providing a suitable configuration for rear-connected test circuits within compatible panels and electrical assemblies.
What type of conductor connection does the TO-I-VA-2 use?
The socket uses a ring-tongue termination arrangement, allowing appropriately terminated conductors to be securely connected to the test socket.
Which ESSAILEC test plug is compatible with the TO-I-VA-2?
The TO-I-VA-2 is designed for use with the FIT-2/4-I reverse-mounting plug, part number 1SNA166672R0700.
Where is the 1SNA166945R2100 typically installed?
It is typically incorporated into switchboards, protection panels, metering systems and other industrial or utility electrical assemblies requiring a dedicated test interface for voltage transformer circuits.
Trusted Test Connectivity for Electrical Protection and Measurement
TE Connectivity / ENTRELEC ESSAILEC test blocks provide dedicated interfaces for testing and measurement circuits, supporting reliable commissioning, maintenance and electrical measurement in industrial power, protection and metering installations.
