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1sna166799r0700 – essailec voltage test block
TE Connectivity TC-E-VA-R1-2.2 1SNA166799R0700 is a coded ESSAILEC voltage test block with make-before-break contacts, flush front-panel mounting and rear screw connections for voltage-transformer secondary, metering and protection circuits.
£77.32
Why Choose the TE Connectivity TC-E-VA-R1-2.2 1SNA166799R0700 ESSAILEC Voltage Test Block?
The TE Connectivity TC-E-VA-R1-2.2 1SNA166799R0700 is a specialist ESSAILEC voltage test block designed to provide controlled test access to voltage-transformer secondary circuits used in electrical metering, measurement and protection systems. Part of the established TE Connectivity ENTRELEC ESSAILEC series, it enables engineers to perform testing, monitoring and maintenance without repeatedly disturbing permanent panel wiring.
The TC-E-VA-R1-2.2 is designed for flush front-panel mounting and uses rear screw connections for cable-lug terminations. Its 2.2 coding configuration helps prevent incorrect mating between different ESSAILEC circuits, while mechanical protection against reverse plug insertion further supports dependable test procedures.
The ESSAILEC system uses a make-before-break contact principle to support controlled circuit switching as compatible test plugs are inserted. The 1SNA166799R0700 therefore provides a practical solution for commissioning, voltage measurement, protection-relay testing and maintenance in industrial switchboards, substations and metering panels.
Key Advantages
- Dedicated ESSAILEC voltage test block for voltage-transformer secondary circuits.
- 2.2 coding helps prevent incorrect connection between different test circuits.
- Make-before-break contact principle supports controlled testing procedures.
- Flush front-panel mounting provides convenient access for commissioning and maintenance.
- Rear screw connections provide secure termination for cable-lug wiring.
- ESSAILEC plug-and-socket architecture reduces unnecessary disturbance of permanent wiring.
- Suitable for metering, measurement, monitoring and protection-relay applications.
Key Features
- TE Connectivity ENTRELEC ESSAILEC series.
- TC-E-VA-R1-2.2 test block configuration.
- Designed for voltage-transformer test and measurement circuits.
- 2.2 coded interface.
- Make-before-break contact operation.
- Flush front-panel mounting.
- Rear screw connection for cable lugs.
- Protection against reverse insertion of the compatible test plug.
- IP20 protection at the socket, increasing to IP40 when fitted with the appropriate cover.
- Compatible with the modular ESSAILEC measuring and testing system.
Reliable Voltage-Transformer Testing for Metering and Protection Systems
ESSAILEC measuring and testing blocks are designed to simplify operations such as voltage and current measurement, monitoring, signal injection and the servicing or replacement of meters and protection relays connected to transformer and sensor secondary circuits. The TC-E-VA-R1-2.2 provides the fixed voltage-circuit interface required for these professional testing procedures.
By combining a coded plug-and-socket architecture with front-panel accessibility and permanent rear wiring, the system enables fast testing without repeatedly disconnecting field conductors. This makes the 1SNA166799R0700 particularly useful in installations where protection and metering equipment must be commissioned, verified or maintained throughout its service life.
Typical Applications
- Voltage-transformer secondary circuits.
- Protection relay testing and commissioning.
- Electrical metering and measurement systems.
- Industrial switchboards and distribution panels.
- Substation protection and instrumentation systems.
- Power monitoring and control installations.
- Meter and protection-relay maintenance.
Technical Specifications
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| Terminal Type | Disconnect / Test | |
|---|---|---|
| Product Series | TE Essailec | |
| Connection | Screw clamp | |
| Manufacturer | TE Connectivity | |
| Product family | ENTRELEC ESSAILEC | |
| Model | TC-E-VA-R1-2.2 | |
| Part number | 1SNA166799R0700 | |
| Product type | Voltage test block / test socket | |
| Application | Voltage-transformer secondary circuit testing | |
| Coding | 2.2 | |
| Contact operation | Make-before-break | |
| Mounting type | Flush front-panel mounting | |
| Connection position | Rear | |
| Connection type | Screw connection for cable lugs | |
| Maximum connection capacity | up to 10 mm² depending on connection arrangement | |
| Protection rating | IP20 socket / IP40 with appropriate cover | |
| Compatible system | ESSAILEC measuring and testing blocks | |
| Pack quantity | 1 | |
| EAN | 3472591667998 |
Frequently Asked Questions
What is the TE Connectivity 1SNA166799R0700 used for?
The 1SNA166799R0700 is an ESSAILEC voltage test block designed to provide controlled test access to voltage-transformer secondary circuits used in metering, measurement and protection systems.
What is the model designation of the 1SNA166799R0700?
The product is identified as the TC-E-VA-R1-2.2 within the TE Connectivity ENTRELEC ESSAILEC measuring and testing range.
What coding does the TC-E-VA-R1-2.2 use?
The test block uses 2.2 coding, helping ensure that the appropriate compatible ESSAILEC test plug is connected to the correct electrical circuit.
How is the 1SNA166799R0700 installed?
The test block is designed for flush mounting in the front of an electrical panel, with permanent wiring connected at the rear using screw-secured cable-lug connections.
What protection does the ESSAILEC test block provide?
The socket provides IP20 protection, which can be increased to IP40 when the appropriate protective cover is fitted, while coding and reverse-insertion protection help reduce connection errors.
Trusted for Professional Electrical Testing
TE Connectivity ENTRELEC ESSAILEC test blocks provide a proven plug-and-play interface for electrical measurement, metering and protection circuits, supporting efficient commissioning and maintenance while minimising disturbance to permanent secondary-circuit wiring.
