Why Choose the TE Connectivity D2.5/5.ADO Feed-Through Terminal Block?
The TE Connectivity D2.5/5.ADO (1SNA199554R2300) is a compact grey feed-through terminal block from the ENTRELEC SNA ADO range, combining an ADO insulation-displacement connection with a conventional screw-clamp connection. This hybrid termination arrangement gives panel builders the speed of ADO wiring on one side while retaining familiar screw-clamp connectivity on the other.
With a rated current of 13.5 A, rated voltage of 1000 V and rated cross-section of 1 mm², the D2.5/5.ADO is designed for signal, control and industrial wiring applications. Its narrow 5 mm spacing helps maximise terminal density in control cabinets and other space-conscious DIN rail assemblies.
The terminal supports rigid conductors from 0.2–4 mm² and flexible conductors from 0.22–2.5 mm² at the screw-clamp connection, while the ADO side is designed for conductors up to 1 mm². DIN rail compatibility, IP20 protection and a wide -55 to +110 °C operating range make it a versatile connection point for professional industrial installations.
Key Advantages
- Combines ADO insulation-displacement and screw-clamp termination in one terminal block.
- 5 mm spacing supports high-density DIN rail terminal assemblies.
- Rated at 13.5 A and 1000 V for industrial control and signal circuits.
- ADO technology eliminates conventional stripping requirements on the ADO connection side.
- Supports up to two wires per ADO connection.
- Screw clamp accepts rigid conductors up to 4 mm² and flexible conductors up to 2.5 mm².
- 8 kV impulse withstand voltage supports robust electrical insulation performance.
- Compatible with standard 35 mm DIN rails.
Key Features
- TE Connectivity / ENTRELEC D2.5/5.ADO.
- Feed-through terminal block.
- Screw clamp – ADO System connection arrangement.
- Grey insulating housing.
- 1 mm² rated cross-section.
- 13.5 A rated current.
- 1000 V rated voltage.
- 8000 V rated impulse withstand voltage.
- 120 A short-time withstand current for 1 s.
- IP20 protection at the main terminals.
- Polyamide insulating material.
- Single-level, two-position feed-through configuration.
Reliable ADO and Screw-Clamp Connectivity
The D2.5/5.ADO combines two termination technologies to provide flexibility within industrial wiring systems. The ADO insulation-displacement connection is designed to simplify conductor installation and can accommodate up to two wires per connection, while the opposite screw clamp provides a conventional termination point for a broader range of conductor sizes.
Its 5 mm width allows large numbers of circuits to be accommodated efficiently on a DIN rail, while the 1000 V rating, 8 kV impulse withstand capability and IP20 main-terminal protection support dependable use in industrial control and automation assemblies. Mounting on standard TH35 rails also makes the terminal straightforward to integrate into established panel designs.
Typical Applications
- Industrial electrical control panels.
- PLC and automation cabinets.
- Machine control wiring.
- Process control systems.
- Signal and auxiliary circuits.
- Instrumentation wiring.
- High-density DIN rail terminal assemblies.
- OEM machinery and equipment.
- Industrial panel building and system integration.
