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1sna166755r0200 – tc-d-c5a
TE Connectivity 1SNA166755R0200 TC-D-C5A is an ENTRELEC ESSAILEC voltage test socket with make-before-break contacts, half-base mounting and a C5A quick-connect interface for voltage-transformer secondary test circuits.
Why Choose the TE Connectivity 1SNA166755R0200 TC-D-C5A Voltage Test Socket?
The TE Connectivity 1SNA166755R0200 is a TC-D-C5A voltage test socket from the ENTRELEC ESSAILEC measuring and testing range. It is designed for test and measurement operations on voltage-transformer secondary circuits and combines a make-before-break contact arrangement with a compact half-base mounting configuration.
The TC-D-C5A uses a C5A quick-connect interface, providing an efficient wiring method for compatible panel installations. Within the ESSAILEC identification system, the model designation identifies a voltage-circuit socket with make-before-break contacts, half-base mounting and quick-connect termination, making the exact configuration straightforward to identify during specification and maintenance.
ESSAILEC test blocks provide a dedicated plug-and-socket interface for current and voltage measurement, monitoring, injection, commissioning and maintenance of secondary circuits associated with transformers, sensors, meters and protection relays. The TC-D-C5A is particularly suited to installations where a semi-flush half-base voltage socket with fast-connect wiring is required.
Key Advantages
- Purpose-built ESSAILEC voltage test socket for transformer secondary circuits.
- Make-before-break contact arrangement provides a controlled switching sequence during compatible test-plug operation.
- Half-base mounting provides a compact semi-flush installation format.
- C5A quick-connect termination simplifies panel wiring.
- Designed for structured voltage measurement, monitoring, testing and maintenance.
- ESSAILEC system provides protection against reverse insertion of compatible test plugs.
- Part of a coded plug-and-socket system designed to reduce connection errors between different test circuits.
- Established TE Connectivity / ENTRELEC solution for industrial metering and protection systems.
Key Features
- TE Connectivity / ENTRELEC ESSAILEC measuring and testing component.
- TC-D-C5A product designation.
- Voltage test socket for voltage-transformer applications.
- Make-before-break contacts.
- Half-base / semi-flush mounting configuration.
- C5A quick-connect wiring interface.
- C5A connection format based on 5 × 0.8 mm quick-connect terminals.
- Designed for use with compatible ESSAILEC test plugs.
- ESSAILEC socket architecture provides IP20 operator protection.
- Supports dedicated coding to help prevent incorrect plug/socket combinations.
- Protection against reverse test-plug insertion.
- Manufacturer part number 1SNA166755R0200.
- EAN 3472591667554.
Dedicated Voltage-Transformer Testing with Quick-Connect Wiring
The ESSAILEC system provides engineers with a dedicated interface for accessing secondary electrical circuits during measurement, monitoring, commissioning, maintenance and equipment replacement. Rather than connecting test equipment directly to permanent panel wiring, compatible plugs and sockets create an organised test point for circuits associated with voltage transformers, meters, instrumentation and protection relays.
The TE Connectivity TC-D-C5A combines the ESSAILEC test architecture with half-base mounting and a C5A quick-connect interface. Its make-before-break contact arrangement provides a defined switching sequence during compatible plug operation, while the ESSAILEC coding and reverse-insertion protection features help support dependable use in switchgear, protection panels, substations and industrial power installations.
Typical Applications
- Voltage-transformer secondary circuits.
- Voltage measurement and monitoring systems.
- Protection relay testing and commissioning.
- Electrical metering systems.
- Switchgear test and protection panels.
- Substation control and instrumentation equipment.
- Industrial power distribution systems.
- Compatible ENTRELEC ESSAILEC measuring and testing assemblies.
Technical Specifications
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| Terminal Type | Disconnect / Test | |
|---|---|---|
| Product Series | TE Essailec | |
| Manufacturer | TE Connectivity / ENTRELEC | |
| Series | ESSAILEC | |
| Model | TC-D-C5A | |
| Part number | 1SNA166755R0200 | |
| Legacy reference | 0166755.02 | |
| Product type | Voltage test socket | |
| Circuit type | Voltage | |
| Contact configuration | Make before break | |
| Mounting | Half-base / semi-flush mounting | |
| Connection technology | C5A quick-connect | |
| Quick-connect size | 5 × 0.8 mm | |
| Application | Voltage-transformer secondary circuit testing and measurement | |
| Front protection | IP20 | |
| Pack quantity | 1 | |
| EAN | 3472591667554 | |
| Customs tariff number | 85369010 |
Frequently Asked Questions
What is the TE Connectivity 1SNA166755R0200?
The 1SNA166755R0200 is a TC-D-C5A ESSAILEC voltage test socket featuring make-before-break contacts, half-base mounting and a C5A quick-connect wiring interface.
What does the TC-D-C5A designation mean?
Within the ESSAILEC identification system, T denotes a voltage circuit, C identifies make-before-break contacts, D indicates half-base mounting and C5A identifies the quick-connect termination system.
What type of connection does the TC-D-C5A use?
The socket uses a C5A quick-connect interface based on 5 × 0.8 mm connections, providing a convenient wiring method for compatible panel installations.
How is the 1SNA166755R0200 mounted?
The TC-D-C5A uses a half-base, semi-flush mounting arrangement, allowing it to be integrated into compatible ESSAILEC panel installations.
What is the TC-D-C5A used for?
The TC-D-C5A is designed for testing and measurement on voltage-transformer secondary circuits, including applications involving meters, instrumentation, monitoring equipment and protection relays.
What is the EAN for the TE Connectivity 1SNA166755R0200?
The EAN for the 1SNA166755R0200 TC-D-C5A is 3472591667554.
Trusted for Industrial Measuring and Testing Systems
TE Connectivity ENTRELEC ESSAILEC products provide dedicated interfaces for transformer secondary circuits, metering and protection systems, helping engineers carry out structured measurement, testing, commissioning and maintenance across switchgear, substations and industrial power installations.
