TE Connectivity D2.5/8.ADO.NF 1SNA399736R0100 is a 24 A, 1000 V feed-through IDC terminal block with ADO System screwless connections, an 8 mm width and TH 35 DIN rail mounting for demanding railway and rolling-stock wiring.
£2.28
The TE Connectivity D2.5/8.ADO.NF, part number 1SNA399736R0100, is a robust ADO System insulation displacement feed-through terminal block developed for demanding railway and rolling-stock electrical applications. Its screwless IDC connection technology provides fast conductor termination while maintaining reliable electrical contact in installations exposed to vibration, shock and other demanding operating conditions.
The D2.5/8.ADO.NF uses ADO insulation displacement connections on both sides, allowing compatible flexible conductors to be terminated without conventional screw clamps. It supports up to two wires per connection and incorporates blue connection marking to help identify the applicable wire size during installation and maintenance.
With an IEC rated current of 24 A, rated voltage of 1000 V and impulse withstand voltage of 8 kV, the terminal provides strong electrical performance in a compact 8 mm width. It mounts on standard TH 35-7.5 and TH 35-15 DIN rails and provides IP20 protection at the main terminals.
Railway electrical equipment requires conductor connections capable of maintaining dependable performance when exposed to vibration, mechanical shock and demanding environmental conditions. The D2.5/8.ADO.NF is specifically designed for rolling-stock applications and uses the TE Connectivity ADO System to provide secure insulation displacement termination without conventional terminal screws.
The ADO connection system also reduces conductor preparation during assembly and supports up to two conductors at each connection point. Combined with standard TH 35 DIN rail mounting, high electrical ratings and a compact form factor, this makes the D2.5/8.ADO.NF suitable for organised and efficient railway control and distribution wiring.
| Manufacturer | TE Connectivity / Entrelec |
|---|---|
| Model | D2.5/8.ADO.NF |
| Manufacturer part number | 1SNA399736R0100 |
| Product type | Feed-through IDC terminal block |
| Connection technology | ADO System insulation displacement connection |
| Number of levels | 1 |
| ADO flexible conductor capacity | 0.93–2.61 mm² to NF F 63-808 |
| EN 50306 conductor capacity | 1–2.5 mm² |
| Maximum wires per connection | 2 |
| Rated current | 24 A IEC |
| Rated current to NF F 61-017 | 16 A |
| Rated voltage | 1000 V IEC |
| Rated voltage to NF F 61-017 | 500 V |
| Rated impulse withstand voltage | 8 kV |
| Rated short-time withstand current | 300 A for 1 s |
| Protection rating | IP20 |
| Colour | Beige |
| Insulating body material | Thermoplastic |
| Terminal width / spacing | 8 mm |
| Height | 45.5 mm |
| Depth | 41 mm |
| DIN rail compatibility | TH 35-7.5 / TH 35-15 |
| Operating temperature | -55 to +110 °C |
| Storage temperature | -55 to +110 °C |
| Net weight | approx. 9 g |
| Pack quantity | 50 pieces |
| EAN | 3472593997369 |
The D2.5/8.ADO.NF is a feed-through IDC terminal block designed particularly for railway and rolling-stock wiring applications where reliable conductor connections are required under vibration and shock.
It uses the TE Connectivity ADO System insulation displacement connection technology, providing screwless conductor termination on both sides of the terminal.
The terminal has an IEC rated current of 24 A, rated voltage of 1000 V, impulse withstand voltage of 8 kV and short-time withstand current of 300 A for 1 s.
The ADO connection accepts flexible conductors from 0.93–2.61 mm² under NF F 63-808 specifications, with 1–2.5 mm² specified for EN 50306 conductors.
The terminal block is designed for mounting on standard TH 35-7.5 and TH 35-15 DIN rails.
Yes. The D2.5/8.ADO.NF is specifically designed for rolling-stock applications exposed to demanding vibration and shock conditions, making it suitable for railway electrical installations.
TE Connectivity / Entrelec ADO terminal blocks provide fast, dependable conductor termination for railway, transportation and industrial electrical systems where secure connections, resistance to demanding operating conditions and efficient DIN rail installation are essential.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...