Why Choose the TE Connectivity D6/8.ADO.4 Feed-Through Terminal Block?
The TE Connectivity 1SNA199157R2500 D6/8.ADO.4 is a grey feed-through ADO / screw clamp terminal block designed for industrial control, automation and electrical panel wiring. Part of the established ENTRELEC SNA ADO range, it combines the rapid ADO connection system with a conventional screw clamp while incorporating a 4 mm test socket for convenient circuit testing and measurement.
The D6/8.ADO.4 has a rated current of 24 A, an IEC rated voltage of 800 V and a rated impulse withstand voltage of 8 kV. Its ADO connection is intended for 1–2.5 mm² conductors, while the screw-clamp side provides additional flexibility for industrial wiring and maintenance.
With a compact 8 mm pitch and dimensions of approximately 45 × 8 × 41 mm, the terminal block supports space-efficient DIN rail assemblies. Its integrated 4 mm test socket provides a practical connection point for compatible test equipment without requiring the main circuit wiring to be disturbed.
Key Advantages
- Versatile feed-through terminal block for industrial control and automation wiring.
- Combines ADO System and screw clamp connection technology.
- Integrated 4 mm test socket simplifies circuit testing and measurement.
- 24 A rated current for industrial control circuits.
- 800 V IEC rated voltage.
- 8 kV impulse withstand voltage.
- Compact 8 mm pitch supports organised terminal assemblies.
- ADO technology supports up to two wires per connection.
Key Features
- TE Connectivity / ENTRELEC SNA ADO series.
- D6/8.ADO.4 feed-through configuration.
- ADO System / screw clamp connection technology.
- Integrated 4 mm diameter test socket.
- Black marking for 1–2.5 mm² wire size.
- 24 A rated current.
- 800 V IEC rated voltage.
- 600 V UL / CSA rated voltage.
- 8 kV rated impulse withstand voltage.
- 8 mm terminal spacing.
- Single-level feed-through construction.
- Grey industrial terminal housing.
ADO Connectivity with Integrated Test Access
The ENTRELEC ADO System provides rapid conductor termination for industrial wiring while maintaining a secure electrical connection in demanding environments. Combining ADO technology with a conventional screw clamp gives the D6/8.ADO.4 flexibility for installations where different termination methods are required on opposite sides of a circuit.
The integrated 4 mm test socket distinguishes this version from standard feed-through terminals by providing direct access for compatible test plugs and measuring equipment. This can simplify commissioning, troubleshooting and preventative maintenance because electrical measurements can be performed without disconnecting the principal conductors.
Typical Applications
- Industrial electrical control panels.
- Factory automation systems.
- Machine control cabinets.
- PLC and instrumentation panels.
- Test and measurement circuits.
- Signal and control wiring.
- Switchgear and electrical distribution equipment.
- DIN rail terminal assemblies requiring accessible test points.
