Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1sna166745r0000 – tf-e-va essailec plug
TE Connectivity TF-E-VA 1SNA166745R0000 is an 8 A, 400 V ENTRELEC ESSAILEC eight-pole voltage test socket with closed contacts, ring-tongue termination and flush mounting for voltage-transformer measurement and distribution circuits.
£83.07
Why Choose the TE Connectivity TF-E-VA ESSAILEC Voltage Test Socket?
The TE Connectivity TF-E-VA 1SNA166745R0000 is an 8-pole voltage test socket with closed contacts from the established ENTRELEC ESSAILEC test block range. Designed for voltage-transformer secondary circuits, it provides a dedicated interface for measurement, distribution, testing and maintenance applications in switchgear, metering panels and electrical protection systems.
The TF-E-VA uses the closed-contact principle, meaning the electrical connection remains continuous and the circuit stays closed during the testing operation. This makes the socket particularly suitable for measurement and distribution applications where continuity of the voltage circuit must be maintained while test equipment is connected.
Rated at 8 A and 400 V, the TF-E-VA features ring-tongue termination for conductors from 0.34–10 mm² and is designed for flush mounting. Its grey coding follows the ESSAILEC convention for voltage circuits, while the compact 50 × 74 × 57 mm construction supports integration into professional electrical panels.
Key Advantages
- Closed-contact design maintains electrical continuity during testing.
- Dedicated for voltage-transformer measurement and distribution applications.
- Rated for 8 A at 400 V.
- Ring-tongue termination accommodates conductors up to 10 mm².
- Flush-mounted configuration provides convenient front-panel test access.
- Grey ESSAILEC coding provides clear identification for voltage circuits.
Key Features
- TE Connectivity ENTRELEC ESSAILEC range.
- TF-E-VA voltage test socket.
- 8-pole configuration.
- Closed contacts for continuous electrical connection.
- Designed for voltage-transformer applications.
- Flush mounting for panel installations.
- Ring-tongue connection technology.
- Grey coding for voltage-circuit identification.
- 4 kV impulse withstand voltage.
- Compatible with the CPT-1 protective cover and COR-T-4-4 pre-wired plug.
Reliable Closed-Contact Testing for Voltage Circuits
The TF-E-VA uses a closed-contact principle in which the permanent electrical connection remains continuous when test equipment is introduced. This enables measurement and diagnostic work to be performed while maintaining the voltage circuit, making the socket particularly useful in metering, monitoring and distribution installations.
As part of the ESSAILEC system, the TF-E-VA provides a defined plug-and-socket interface for secondary electrical circuits. Its flush-mounted design, ring-tongue terminations and compatible protective accessories support repeatable commissioning, testing and maintenance procedures in utility and industrial power systems.
Typical Applications
- Voltage-transformer secondary circuits.
- Electrical metering and measurement panels.
- Voltage measurement and distribution circuits.
- Protection relay systems.
- Substation control and protection panels.
- Industrial switchgear and power distribution equipment.
- Commissioning, diagnostic and maintenance test systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Terminal Type | Disconnect / Test | |
|---|---|---|
| Connection | Pluggable | |
| Product Series | TE Essailec | |
| Colour | Grey | |
| Manufacturer | TE Connectivity | |
| Brand / range | ENTRELEC | |
| Series | ESSAILEC | |
| Model | TF-E-VA | |
| Manufacturer part number | 1SNA166745R0000 | |
| Product type | Voltage test socket / fixed terminal block | |
| Application | Voltage-transformer measurement and distribution circuits | |
| Number of poles | 8 | |
| Contact principle | Closed contacts | |
| Rated current | 8 A | |
| Rated voltage | 400 V | |
| Rated short-time withstand current | 800 A for 1 s | |
| Rated impulse withstand voltage | 4000 V | |
| Connection type | Ring-tongue | |
| Conductor capacity | 0.34–10 mm² | |
| Mounting type | Flush mounting | |
| Colour | Grey | |
| Pollution degree | 3 | |
| Working temperature range | -10–55 °C | |
| Storage temperature range | -25–70 °C | |
| Protection rating | IP20; IP40 with compatible cover | |
| Width | 50 mm | |
| Height | 74 mm | |
| Depth | 57 mm | |
| Weight | approx. 170 g | |
| Compatible cover | CPT-1 | |
| Compatible pre-wired plug | COR-T-4-4 | |
| Pack quantity | 1 | |
| EAN | 3472591667455 |
Frequently Asked Questions
What is the TE Connectivity TF-E-VA 1SNA166745R0000?
The TF-E-VA is an 8-pole ENTRELEC ESSAILEC voltage test socket with closed contacts, designed primarily for voltage-transformer measurement and distribution applications.
How do the closed contacts in the TF-E-VA operate?
The closed-contact principle maintains electrical continuity, so the circuit remains closed during the testing operation. This makes the TF-E-VA suitable for measurement and distribution circuits where continuous connection is required.
What are the electrical ratings of the TF-E-VA?
The TF-E-VA has a rated current of 8 A, a rated voltage of 400 V and a rated impulse withstand voltage of 4000 V.
What conductor sizes can be connected to the TF-E-VA?
The ring-tongue main-circuit connection supports conductors from approximately 0.34–10 mm².
Which ESSAILEC accessories are compatible with the TF-E-VA?
The TF-E-VA is compatible with the CPT-1 protective cover and the COR-T-4-4 pre-wired four-pole plug specified for the ESSAILEC voltage range.
Trusted for Electrical Testing and Measurement Systems
TE Connectivity ENTRELEC ESSAILEC test blocks provide a modular connection platform for electrical measurement, monitoring, commissioning and protection applications where controlled and repeatable access to transformer secondary circuits is required.
