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.
1sna166546r2100 – fit-1/4-d
TE Connectivity 1SNA166546R2100 FIT-1/4-D is a 4-pole 400 V ENTRELEC ESSAILEC voltage test plug with 01-02-03-04 insertion for testing, monitoring and commissioning electrical measurement and protection circuits.
£19.63
Why Choose the TE Connectivity 1SNA166546R2100 FIT-1/4-D Voltage Test Plug?
The TE Connectivity 1SNA166546R2100 is a specialised 4-pole voltage test plug designed for safe and convenient access to electrical measurement and protection circuits. Also identified as the FIT-1/4-D, this component forms part of the established ENTRELEC ESSAILEC test block system, providing a removable interface for testing, monitoring, commissioning and maintenance operations.
The FIT-1/4-D features a 4-pole configuration with insertion positions 01-02-03-04. It is supplied with a coding pin and locking pins, helping ensure controlled connection to compatible ESSAILEC sockets. Contact pins from the compatible BRE-T range are selected separately, allowing the plug to be configured for the required conductor connection.
Rated for applications up to 400 V, the 1SNA166546R2100 is designed to work with compatible ESSAILEC socket families including TC-E-VA, TC, TO and TF types. This modular approach provides technicians with a practical plug-and-play test interface while helping minimise unnecessary disturbance of permanent field wiring.
Key Advantages
- Purpose-designed 4-pole voltage test plug for electrical testing and measurement circuits.
- Part of the established TE Connectivity / ENTRELEC ESSAILEC test block system.
- Provides convenient removable access for testing, monitoring and commissioning.
- Defined 01-02-03-04 insertion configuration supports controlled circuit connection.
- Coding and locking features help provide secure and correctly orientated installation.
- Helps reduce the need to disturb permanent wiring during routine test and maintenance work.
Key Features
- TE Connectivity / ENTRELEC ESSAILEC range.
- FIT-1/4-D voltage test plug.
- 4-pole configuration.
- Insertion sequence 01-02-03-04.
- 400 V voltage rating.
- Supplied with 1 coding pin and 4 locking pins.
- Designed for use with separately selected BRE-T contact pins.
- Compatible with selected TC-E-VA, TC, TO and TF ESSAILEC sockets.
Reliable Access for Voltage Circuit Testing
Voltage test plugs provide technicians with a controlled interface between permanently installed electrical circuits and test or measurement equipment. In protection and metering systems, this arrangement can simplify voltage measurement, signal monitoring, injection testing and maintenance while reducing the need to disconnect or modify permanent panel wiring.
The FIT-1/4-D forms part of the modular ESSAILEC system, where compatible plugs and sockets can be combined to provide structured test access to secondary circuits associated with voltage transformers, sensors, meters and protection relays. Its four-pole arrangement makes it suitable for simultaneous access to multiple circuit connections through a compact removable interface.
Typical Applications
- Voltage measurement and monitoring circuits.
- Protection relay testing and commissioning.
- Electrical energy metering systems.
- Voltage transformer secondary circuits.
- Substation and switchgear test panels.
- Industrial electrical testing and maintenance systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Terminal Type | Disconnect / Test | |
|---|---|---|
| Product Series | TE Essailec | |
| Connection | Pluggable | |
| Manufacturer | TE Connectivity / ENTRELEC | |
| Series | ESSAILEC | |
| Model | FIT-1/4-D | |
| Manufacturer part number | 1SNA166546R2100 | |
| Product type | Voltage test plug | |
| Number of poles | 4 | |
| Insertion configuration | 01-02-03-04 | |
| Rated voltage | 400 V | |
| Coding | 1 coding pin | |
| Locking | 4 locking pins | |
| Contact pins | Compatible BRE-T contact pins ordered separately | |
| Compatible socket families | TC-E-VA, TC, TO and TF | |
| Application | Voltage measurement, testing, monitoring and commissioning | |
| EAN | 3472591665468 | |
| Pack quantity | 1 |
Frequently Asked Questions
What is the TE Connectivity 1SNA166546R2100 used for?
The 1SNA166546R2100 FIT-1/4-D is a 4-pole voltage test plug used to provide removable access to electrical measurement and protection circuits for testing, monitoring, commissioning and maintenance.
How many poles does the FIT-1/4-D have?
The FIT-1/4-D has a 4-pole configuration with insertion positions identified as 01-02-03-04.
What is the voltage rating of the 1SNA166546R2100?
The TE Connectivity FIT-1/4-D is rated for applications up to 400 V.
Does the FIT-1/4-D include contact pins?
The FIT-1/4-D is designed for use with compatible BRE-T contact pins, which are selected and ordered separately according to the required conductor connection.
Which ESSAILEC sockets are compatible with the FIT-1/4-D?
The FIT-1/4-D is designed for use with compatible TC-E-VA, TC, TO and TF ESSAILEC socket configurations, subject to the required circuit and socket arrangement.
Trusted Test Connectivity for Electrical Protection Systems
TE Connectivity ENTRELEC ESSAILEC test components provide structured and dependable access to electrical measurement and protection circuits, helping engineers carry out testing, commissioning and maintenance through a modular plug-and-socket interface.
