TE Connectivity D2.5/5.SN.ADO 1SNA399226R0200 is a 10 A, 320 V disconnect terminal block combining ADO insulation displacement and screw-clamp connections with a manual disconnect blade and 2 mm test socket.
£3.86
The TE Connectivity D2.5/5.SN.ADO, part number 1SNA399226R0200, is a compact disconnect terminal block with ADO and screw-clamp connections designed for measurement, control and industrial wiring applications. Part of the established Entrelec SNA terminal block range, it combines a manually operated disconnect blade with an integrated test socket for convenient circuit isolation and testing.
The terminal uses the ADO insulation displacement connection system on one side and a conventional screw clamp on the other, providing flexibility when terminating different conductor arrangements. The ADO connection supports fast wiring without conductor stripping while the screw-clamp side accommodates a wider conductor range for integration into standard control-panel wiring.
With a rated current of 10 A, rated voltage of 320 V and rated cross-section of 1 mm², the D2.5/5.SN.ADO provides dependable circuit separation in a compact 5 mm terminal width. A 2 mm test socket on the ADO side enables convenient electrical measurements without dismantling the wiring.
Disconnect terminal blocks provide a convenient way to isolate individual circuits without removing conductors from the terminal. The manually operated blade in the D2.5/5.SN.ADO allows technicians to open the electrical path for commissioning, troubleshooting and maintenance, while the integrated test socket provides direct access for measurement equipment.
The combination of ADO and screw-clamp technologies also makes the terminal particularly versatile. The ADO connection provides fast insulation-displacement termination, while the screw-clamp side accommodates conventional prepared conductors, making the terminal suitable for mixed wiring practices in industrial control and instrumentation systems.
| Manufacturer | TE Connectivity / Entrelec |
|---|---|
| Series | SNA |
| Model | D2.5/5.SN.ADO |
| Manufacturer part number | 1SNA399226R0200 |
| Product type | Disconnect terminal block |
| Connection technology | ADO insulation displacement / screw clamp |
| Rated cross-section | 1 mm² |
| Rated current | 10 A |
| Rated voltage | 320 V |
| Impulse withstand voltage | 4000 V |
| Rated short-time withstand current | 120 A for 1 s |
| ADO rigid conductor capacity | 0.2–1 mm² |
| ADO flexible conductor capacity | 0.22–1 mm² |
| Screw-clamp rigid conductor capacity | 0.2–4 mm² |
| Screw-clamp flexible conductor capacity | 0.22–2.5 mm² |
| Test socket diameter | 2 mm |
| Terminal width | 5 mm |
| Wire stripping length, screw-clamp side | 9.5 mm |
| Screw tightening torque | 0.4–0.6 N·m |
| Protection rating | IP20 |
| Colour | Grey |
| DIN rail compatibility | TH 35-7.5 / TH 35-15 |
| Net weight | approx. 9 g |
| Pack quantity | 50 pieces |
| Barcode | 3472593992265 |
The D2.5/5.SN.ADO is a disconnect terminal block used for wiring, isolating and testing control, measurement and instrumentation circuits in industrial electrical panels.
The terminal combines an ADO insulation displacement connection on one side with a conventional screw-clamp connection on the other.
The terminal has an IEC rated current of 10 A, a rated voltage of 320 V and a rated cross-section of 1 mm².
Yes. It includes a 2 mm diameter test socket on the ADO side for convenient electrical measurements and diagnostic testing.
The D2.5/5.SN.ADO is suitable for mounting on standard TH 35-7.5 and TH 35-15 DIN rails.
The ADO side accepts rigid conductors from 0.2–1 mm² and flexible conductors from 0.22–1 mm², while the screw-clamp side accepts rigid conductors up to 4 mm² and flexible conductors up to 2.5 mm².
TE Connectivity / Entrelec SNA disconnect terminal blocks are designed for professional control, instrumentation and automation systems where reliable conductor termination, straightforward circuit isolation and convenient electrical testing 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...