Why Choose the TE Connectivity D2.5/8.P.ADO Ground Terminal Block?
The TE Connectivity 1SNA199091R1700 D2.5/8.P.ADO is a compact green-and-yellow ground terminal block designed to provide reliable protective earth connections in industrial control panels, machinery and electrical distribution equipment. Part of the established ENTRELEC SNA ADO range, it combines screwless ADO insulation displacement connections with a direct, operator-independent rail contact for dependable grounding.
Designed around a rated conductor cross-section of 2.5 mm², the D2.5/8.P.ADO accepts copper conductors from 1–2.5 mm² and uses ADO connections on both sides. The connection system supports up to two wires per connection and eliminates the need to apply a conventional screw-clamp tightening torque, helping improve consistency and reduce wiring time.
The terminal has an 8 mm pitch and mounts on standard TH35-7.5 and TH35-15 DIN rails. Its screwless rail contact provides the protective earth connection to the mounting rail, while IP20 main-terminal protection, polyamide insulation and an operating temperature range of -55 to +110 °C support use in demanding industrial environments.
Key Advantages
- Purpose-designed protective earth / ground terminal block.
- 2.5 mm² rated cross-section for industrial grounding conductors.
- Screwless ADO/ADO connection technology for fast, consistent termination.
- Screwless rail contact provides an operator-independent earth connection.
- Supports up to two wires per connection.
- 300 A short-time withstand current for 1 s.
- 8 mm terminal spacing for organised DIN rail assemblies.
- Green-and-yellow construction provides clear protective earth identification.
Key Features
- TE Connectivity / ENTRELEC SNA ADO series.
- D2.5/8.P.ADO ground terminal configuration.
- ADO System / ADO System conductor connections.
- 1–2.5 mm² conductor connection range.
- 2.5 mm² rated cross-section.
- 14 AWG UL conductor rating.
- 300 A short-time withstand current for 1 s.
- 8 mm terminal width and spacing.
- Single-level, two-position configuration.
- IP20 protection at the main terminals.
- Screwless protective earth contact with the DIN rail.
- Green-and-yellow polyamide housing.
Reliable Protective Earth Connections with ADO Technology
Protective earth terminal blocks connect equipment grounding conductors to the DIN rail and ultimately to the panel grounding system. The D2.5/8.P.ADO uses a screwless rail contact that is independent of operator-applied torque, helping provide a consistent protective earth connection and secure mounting on the rail.
The ENTRELEC ADO System uses insulation displacement connection technology for rapid conductor termination. This makes the D2.5/8.P.ADO particularly useful in high-volume panel building and industrial applications where fast installation, vibration resistance and repeatable connection quality are important.
Typical Applications
- Protective earth and grounding circuits.
- Industrial electrical control panels.
- Factory automation equipment.
- Machine control cabinets.
- Switchgear and electrical distribution systems.
- PLC and instrumentation panels.
- DIN rail terminal assemblies.
- OEM machinery and production equipment.
