Why Choose the TE Connectivity 1SNA199107R2400 D4/6.SN.ADO Disconnect Terminal Block?
The TE Connectivity 1SNA199107R2400, type D4/6.SN.ADO, is a grey knife-disconnect terminal block from the Entrelec SNA ADO range. It combines an ADO insulation-displacement connection with a conventional screw-clamp connection, providing a practical transition between ADO wiring and standard screw-terminated conductors in industrial control, automation and instrumentation systems.
A key feature of the D4/6.SN.ADO is its hand-operated disconnect knife blade, which enables the circuit path to be opened for testing, commissioning or maintenance without removing the connected conductors. An integrated 2 mm test socket on the ADO side provides convenient access for compatible test equipment, making the terminal particularly useful in measurement and diagnostic circuits.
The terminal has a compact 6 mm width, a nominal conductor cross-section of 1.5 mm², a 500 V IEC rated voltage and a 10 A rated current. Its thermoplastic insulating body is rated UL 94 V-0, while compatibility with standard 35 mm DIN rails and an operating temperature range from -55 to +110 °C support installation in demanding industrial environments.
Key Advantages
- Hand-operated knife disconnect allows convenient circuit isolation without removing wiring.
- Integrated 2 mm test socket provides accessible test and measurement connectivity.
- Combines ADO and screw-clamp termination within one terminal.
- ADO connection supports up to two conductors per connection.
- 500 V IEC rated voltage and 10 A rated current.
- Compact 6 mm width supports high-density DIN rail assemblies.
- Wide -55 to +110 °C operating temperature range.
- Thermoplastic insulation with UL 94 V-0 flammability classification.
Key Features
- TE Connectivity / Entrelec D4/6.SN.ADO terminal block.
- Disconnect terminal with manually operated knife blade.
- ADO insulation-displacement and screw-clamp connections.
- Integrated 2 mm diameter test socket on the ADO side.
- 1.5 mm² nominal conductor cross-section.
- 10 A rated current.
- 500 V IEC rated voltage.
- 600 V UL/CSA voltage rating.
- Single-level, two-position construction.
- 6 mm terminal width.
- Grey housing.
- Compatible with TH35-7.5 and TH35-15 DIN rails.
Knife Disconnect with Integrated ADO-Side Test Access
The D4/6.SN.ADO is designed to simplify circuit isolation and measurement within modular terminal assemblies. Its knife blade can be operated by hand to interrupt the conductive path, allowing technicians to isolate individual circuits during commissioning, troubleshooting or servicing without disconnecting the field wiring from the terminal.
An integrated 2 mm test socket on the ADO side provides a dedicated connection point for compatible test equipment. Combined with the hybrid ADO and screw-clamp arrangement, this allows installers to retain the benefits of ADO wiring while interfacing with conventional screw-connected conductors. Up to two conductors can be connected at an ADO connection, providing additional wiring flexibility in compact control-panel applications.
Typical Applications
- Industrial electrical control panels.
- PLC and automation cabinets.
- Signal and instrumentation circuits.
- Measurement and test circuits.
- Commissioning and diagnostic connections.
- Machine control systems.
- ADO-to-screw wiring interfaces.
- DIN rail terminal assemblies.
