TE Connectivity 1SNA399748R2500 D4/8.ADO.NF is a beige 8 mm spacing ADO System feed-through terminal block rated at 32 A and 1,000 V IEC for reliable flexible-conductor connections in demanding railway and rolling-stock applications.
£2.48
The TE Connectivity 1SNA399748R2500, also identified as D4/8.ADO.NF, is a beige ADO System feed-through terminal block engineered for demanding railway and rolling-stock electrical installations. Its specialised design combines compact DIN rail mounting with TE Connectivity's insulation displacement connection technology for secure, repeatable conductor termination.
Developed specifically for applications exposed to vibration, shock and demanding operating conditions, the D4/8.ADO.NF uses ADO connections on both sides and can accommodate up to two wires per connection. The terminal is intended for flexible conductors and incorporates yellow identification marking to indicate the applicable wire size.
With an 8 mm spacing, an IEC rated current of 32 A and rated voltage of 1,000 V, the D4/8.ADO.NF provides a robust connection solution for railway electrical distribution and control circuits. Its compatibility with standard 35 mm DIN rail makes integration into rolling-stock terminal assemblies straightforward.
Electrical connections in rolling stock must remain dependable despite continuous vibration, mechanical shock and demanding service conditions. The D4/8.ADO.NF is specifically designed for these environments, using the TE Connectivity ADO System to provide a consistent insulation displacement connection for compatible flexible railway conductors.
Its feed-through arrangement creates a straightforward electrical path between conductors while the 8 mm spacing supports compact terminal-strip construction. With IEC ratings of 32 A and 1,000 V, the D4/8.ADO.NF is suitable for professional railway control, distribution and equipment wiring where robust terminal connections are essential.
| Manufacturer | TE Connectivity / Entrelec |
|---|---|
| Series | Railway ADO / SNA HD |
| Model | D4/8.ADO.NF |
| Manufacturer part number | 1SNA399748R2500 |
| Product type | IDC feed-through terminal block |
| Connection technology | ADO System insulation displacement connection |
| Electrical connection | ADO / ADO |
| Rated current (IEC) | 32 A |
| Rated current (NF F 61-017) | 16 A |
| Rated voltage (IEC) | 1,000 V |
| Rated voltage (NF F 61-017) | 500 V |
| Rated short-time withstand current | 480 A for 1 s |
| Flexible conductor capacity (NF F 63-808) | 4.32 mm² |
| Number of wires per connection | Up to 2 |
| Number of levels | 1 |
| Spacing | 8 mm |
| Colour | Beige |
| Insulating body material | Thermoplastic |
| Mounting | 35 mm DIN rail |
| Operating temperature | -55 to +110 °C |
| Product net weight | 9 g |
| Pack quantity | 50 pieces |
| EAN | 3472593997482 |
The D4/8.ADO.NF is a feed-through ADO terminal block designed primarily for railway and rolling-stock electrical installations requiring dependable connections under vibration and mechanical shock.
The terminal block has an IEC rated current of 32 A and an IEC rated voltage of 1,000 V.
The D4/8.ADO.NF is specified for 4.32 mm² flexible conductor according to NF F 63-808 and can accommodate up to two wires per ADO connection.
It is specifically designed for rolling-stock installations exposed to demanding conditions including vibration and mechanical shock, while its ADO insulation displacement technology provides secure and consistent conductor termination.
The terminal block is designed for installation on standard 35 mm DIN rail within compatible railway electrical and control assemblies.
TE Connectivity / Entrelec railway terminal blocks provide rolling-stock manufacturers, panel builders and railway engineers with robust connection technology designed for dependable operation in electrical systems exposed to vibration, shock and demanding service conditions.
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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...
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...