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1sna166748r1300 – tc-d-va
TE Connectivity 1SNA166748R1300 TC-D-VA is an ESSAILEC 8 A 400 V voltage transformer test block socket with ring-tongue connections for electrical measurement, protection and testing applications.
£86.17
Why Choose the TE Connectivity 1SNA166748R1300 TC-D-VA ESSAILEC Test Block?
The TE Connectivity 1SNA166748R1300, also identified as TC-D-VA, is a specialised ESSAILEC voltage transformer test block socket designed for safe and convenient testing, measurement and monitoring of voltage transformer secondary circuits. Part of the established TE Connectivity / Entrelec ESSAILEC test block range, it provides a reliable interface for protection, metering and electrical measurement systems.
The TC-D-VA uses a ring-tongue rear connection and is designed for base or half-base mounting. ESSAILEC test blocks provide plug-and-play access to instrument transformer circuits, helping engineers carry out measurement, monitoring, injection, commissioning, maintenance and replacement operations on meters and protection relays.
With a rated current of 8 A, rated voltage of 400 V and conductor capacity up to 10 mm², the 1SNA166748R1300 is engineered for demanding industrial and electrical distribution environments. The grey socket measures approximately 57 × 44 × 63 mm and provides IP20 protection without a lid, increasing to IP40 when a compatible lid is fitted.
Key Advantages
- Specialised ESSAILEC test block socket for voltage transformer circuits.
- 8 A rated current and 400 V rated voltage for measurement and protection applications.
- Supports conductors up to 10 mm².
- Ring-tongue rear connection provides a secure electrical termination.
- Base / half-base mounting design for integration into electrical panels.
- ESSAILEC architecture provides convenient access for testing, measurement and maintenance.
Key Features
- TE Connectivity / Entrelec ESSAILEC test block range.
- TC-D-VA manufacturer product designation.
- Voltage transformer test block socket.
- 8 A rated current.
- 400 V rated voltage.
- Conductor capacity up to 10 mm².
- Ring-tongue termination for rear wiring.
- IP20 protection without lid and IP40 with compatible lid.
Reliable Voltage Transformer Testing and Measurement
ESSAILEC test blocks provide a dedicated interface for testing and measurement within instrument transformer secondary circuits. The system allows technicians to access voltage measurement circuits for monitoring, injection, commissioning, maintenance and the replacement of meters or protection relays without requiring complex temporary wiring arrangements.
The TC-D-VA is specifically configured for voltage transformer applications and combines robust ring-tongue connections with a compact base-mounted design. Its established ESSAILEC architecture makes it well suited to switchgear, substations, metering panels and protection systems where reliable test access and repeatable electrical connections are essential.
Typical Applications
- Voltage transformer secondary circuits.
- Electrical measurement and metering systems.
- Protection relay testing and commissioning.
- Switchgear and electrical distribution panels.
- Substation protection and control systems.
- Industrial test, monitoring and measurement installations.
Technical Specifications
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| Terminal Type | Disconnect / Test | |
|---|---|---|
| Product Series | TE Essailec | |
| Colour | Grey | |
| Manufacturer | TE Connectivity / Entrelec | |
| Series | ESSAILEC Test Blocks | |
| Model | TC-D-VA | |
| Manufacturer part number | 1SNA166748R1300 | |
| Product type | Voltage transformer test block socket | |
| Product category | Transformer accessories / fixed terminal blocks | |
| Application | Voltage transformer secondary circuits | |
| Rated current | 8 A | |
| Rated voltage | 400 V | |
| Conductor capacity | up to 10 mm² | |
| Connection technology | Ring-tongue | |
| Mounting type | Base / half-base mounting | |
| Colour | Grey | |
| Protection rating | IP20 without lid / IP40 with lid | |
| Width | 44 mm | |
| Height | 57 mm | |
| Depth | 63 mm | |
| Weight | approx. 147 g | |
| Working temperature range | -10 to +55 °C | |
| Storage temperature range | -25 to +70 °C | |
| Pollution degree | 3 | |
| Compatible lid | CPP-1 | |
| Compatible universal plug | FI-2/4-DIA4 | |
| Compatible pre-wired plugs | COR-T-R5-2.2 / COR-T-4-4 | |
| Factory pack quantity | 1 | |
| Barcode | 3472591667486 |
Frequently Asked Questions
What is the TE Connectivity 1SNA166748R1300 used for?
The 1SNA166748R1300 is an ESSAILEC voltage transformer test block socket used to provide convenient access to voltage transformer secondary circuits for measurement, monitoring, testing, commissioning and maintenance.
What are the electrical ratings of the TC-D-VA?
The TC-D-VA has a rated current of 8 A and a rated voltage of 400 V.
What connection technology does the TC-D-VA use?
The TC-D-VA uses a ring-tongue rear connection and supports conductor connections up to 10 mm².
What is the protection rating of the 1SNA166748R1300?
The socket provides IP20 protection without a lid and can achieve IP40 protection with a compatible lid.
Where is the TC-D-VA typically installed?
It is typically installed in voltage transformer circuits within switchgear, substations, metering panels, protection systems and industrial electrical installations requiring reliable testing and measurement access.
Trusted for Voltage Transformer Testing
TE Connectivity / Entrelec ESSAILEC test blocks provide specialised connection solutions for instrument transformer, metering and protection circuits where reliable test access, secure electrical connections and efficient maintenance are essential.
