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1sna166889r2200 – tc-e-c4a-2-2
TE Connectivity TC-E-C4A-2.2 1SNA166889R2200 is an 8 A, 400 V ENTRELEC ESSAILEC shunted voltage test socket with 2.2 coding, flush mounting, Faston/clip connections and a supplied C4A protective lid for voltage transformer, metering and protection circuits.
£97.64
Why Choose the TE Connectivity TC-E-C4A-2.2 ESSAILEC Voltage Test Socket?
The TE Connectivity TC-E-C4A-2.2 1SNA166889R2200 is an ESSAILEC voltage test socket designed for testing and measurement on voltage transformer secondary circuits. Part of the established TE Connectivity / ENTRELEC ESSAILEC measuring and testing range, it provides a dedicated plug-in interface for commissioning, monitoring, maintenance and replacement operations involving meters and protection relays.
The TC-E-C4A-2.2 features a shunted contact arrangement, flush front-panel mounting and Faston/clip electrical connections. Its integrated C4A lid provides additional protection when the test interface is not in use, while the 2.2 coding system helps prevent incorrect connection between differently coded ESSAILEC circuits.
Rated at 400 V and 8 A, with a 4 kV impulse withstand voltage, the TC-E-C4A-2.2 is designed for demanding protection and measurement installations. Its eight-pole rectangular configuration and compact 50 × 74 × 40 mm dimensions make it suitable for switchgear, substations, protection panels and industrial metering systems.
Key Advantages
- Purpose-designed ESSAILEC voltage test socket for voltage transformer circuits.
- Shunted contact configuration for controlled test and measurement operations.
- 400 V rated voltage and 8 A rated current.
- Flush front-panel mounting for neat integration into electrical panels.
- Faston/clip connection technology supports efficient permanent wiring.
- Supplied with an integrated C4A protective lid.
- 2.2 coding helps reduce the risk of incorrect test plug insertion.
Key Features
- TE Connectivity / ENTRELEC ESSAILEC series.
- TC-E-C4A-2.2 model designation.
- Voltage socket with shunted contacts.
- 8-pole rectangular contact arrangement.
- 2.2 coding configuration.
- 400 V rated voltage.
- 8 A rated current.
- 4 kV impulse withstand voltage.
- Flush mounting.
- Supplied with C4A lid.
Reliable Voltage Transformer Testing with ESSAILEC
ESSAILEC test blocks provide a structured plug-and-socket interface for measurement, voltage monitoring, injection, commissioning, repair and replacement operations in secondary circuits associated with voltage transformers, meters and protection relays. This approach enables engineers to access test circuits without repeatedly modifying permanent panel wiring.
The TC-E-C4A-2.2 combines a shunted voltage socket, flush mounting, Faston-style connectivity and a coded interface in one compact assembly. The supplied C4A lid increases protection from IP20 to IP40 when fitted, while the 2.2 coding system helps prevent connection errors between different ESSAILEC circuits.
Typical Applications
- Voltage transformer secondary circuits.
- Protection relay testing and commissioning.
- Electrical metering and energy measurement systems.
- Substation protection and control panels.
- Switchgear and distribution assemblies.
- Industrial voltage monitoring systems.
- Meter and protection relay maintenance or replacement.
Technical Specifications
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| Terminal Type | Disconnect / Test | |
|---|---|---|
| Product Series | TE Essailec | |
| Manufacturer | TE Connectivity / ENTRELEC | |
| Series | ESSAILEC | |
| Model | TC-E-C4A-2.2 | |
| Manufacturer part number | 1SNA166889R2200 | |
| Product type | Voltage test socket | |
| Application | Voltage transformer secondary testing and measurement | |
| Contact configuration | Shunted | |
| Number of poles | 8 | |
| Contact diameter | 2.2 mm | |
| Coding | 2.2 | |
| Rated current | 8 A | |
| Rated voltage | 400 V | |
| Impulse withstand voltage | 4 kV | |
| Pollution degree | 3 | |
| Mounting | Flush front-panel mounting | |
| Connection | Faston / clip connection | |
| Housing form | Rectangular | |
| Contact material | Copper | |
| Insulating insert material | Thermoplastic | |
| Flammability rating | UL 94 V-2 | |
| Operating temperature | -10 to +55 °C | |
| Protection without lid | IP20 | |
| Protection with lid | IP40 | |
| Width | 50 mm | |
| Height | 74 mm | |
| Depth | 40 mm | |
| Protective lid | C4A, supplied | |
| EAN | 3472591668896 | |
| Customs tariff number | 85369010 | |
| Pack quantity | 1 |
Frequently Asked Questions
What is the TE Connectivity TC-E-C4A-2.2 1SNA166889R2200 used for?
The TC-E-C4A-2.2 is an ESSAILEC voltage test socket designed for testing and measurement on secondary voltage transformer circuits associated with metering and protection equipment.
What are the electrical ratings of the TC-E-C4A-2.2?
The socket has a rated current of 8 A, a rated voltage of 400 V and an impulse withstand voltage of 4 kV.
How is the TC-E-C4A-2.2 installed?
The TC-E-C4A-2.2 is designed for flush front-panel mounting and uses Faston/clip-style connections for integration into compatible electrical panels.
What does the 2.2 coding provide?
The 2.2 coding identifies the compatible ESSAILEC connection arrangement and helps prevent incorrect insertion of differently coded test plugs.
Does the TC-E-C4A-2.2 include a protective lid?
Yes. The socket is supplied with a C4A lid, increasing protection from IP20 at the socket to IP40 with the lid fitted.
Trusted Connectivity for Voltage Measurement Systems
TE Connectivity’s ENTRELEC ESSAILEC system provides dedicated, coded test interfaces for voltage transformer, protection and metering circuits, helping engineers perform commissioning and maintenance efficiently while maintaining organised permanent wiring.
