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1sna399785r0300 – d4/8.sf ado.
TE Connectivity D4/8.SF.I.ADO 1SNA399785R0300 is an 8 mm DIN rail fuse terminal block for 5 × 20 mm and 5 × 25 mm cartridge fuses, combining ADO System and screw-clamp connections with an integrated 2 mm test socket.
£4.14
Why Choose the TE Connectivity D4/8.SF.I.ADO 1SNA399785R0300 Fuse Terminal Block?
The TE Connectivity D4/8.SF.I.ADO 1SNA399785R0300 is a compact DIN rail fuse terminal block designed to provide circuit protection and dependable conductor termination in industrial control panels, machinery and automation systems. Part of the established Entrelec ADO System® terminal block range, it combines an ADO insulation-displacement connection with a conventional screw clamp for flexible and efficient panel wiring.
Designed to accept 5 × 20 mm and 5 × 25 mm cartridge fuses, the D4/8.SF.I.ADO allows a fuse to be integrated directly into the terminal strip, reducing the need for separate fuse holders. The fuse is not supplied with the terminal block. A built-in 2 mm test socket on the ADO side provides convenient access for measurement, commissioning and troubleshooting.
With an 8 mm terminal spacing and a rated cross-section of 1.5 mm² on the ADO connection, the 1SNA399785R0300 provides a compact solution for protected circuits. Its grey thermoplastic housing, DIN rail mounting and combination of ADO and screw-clamp technologies make it well suited to professional industrial panel construction.
Key Advantages
- Integrated fuse terminal block for 5 × 20 mm and 5 × 25 mm fuses.
- Combines ADO System® insulation-displacement and screw-clamp connections.
- Built-in 2 mm test socket simplifies electrical testing and diagnostics.
- Up to two wires per ADO connection for flexible circuit wiring.
- Compact 8 mm spacing helps conserve DIN rail space.
- DIN rail mounting supports straightforward integration into industrial terminal assemblies.
Key Features
- TE Connectivity / Entrelec ADO System® fuse terminal block.
- D4/8.SF.I.ADO configuration.
- Accepts 5 × 20 mm and 5 × 25 mm cartridge fuses.
- 2 mm diameter test socket on the ADO side.
- ADO System® plus screw-clamp connection technology.
- 1.5 mm² ADO rated cross-section.
- 8 mm terminal width / spacing.
- 6.3 A rated current for the fuse-terminal application.
- 630 V rated voltage.
- IP20 protection at the main terminals.
Reliable Fused Circuit Protection for Industrial Panels
Fuse terminal blocks combine conductor termination and overcurrent protection in a single DIN rail component. By accommodating standard 5 × 20 mm and 5 × 25 mm cartridge fuses, the D4/8.SF.I.ADO allows individual circuits to be protected directly within the terminal strip while keeping panel layouts compact and organised.
The hybrid connection arrangement combines the rapid, consistent termination characteristics of the ADO System® with a conventional screw clamp. Together with the integrated 2 mm test socket, this makes the terminal particularly practical for panel assembly, commissioning, routine measurement and electrical fault finding.
Typical Applications
- Industrial control and automation panels.
- Fused control and auxiliary circuits.
- PLC input and output wiring.
- Machine-building electrical cabinets.
- Process control and instrumentation systems.
- Electrical distribution and protection assemblies.
Technical Specifications
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| Number of Levels | 1 | |
|---|---|---|
| Product Series | TE SNA ADO | |
| Connection | IDC (ADO) | |
| Terminal Type | Fuse | |
| Conductor Size | 4 mm² | |
| Colour | Grey | |
| Manufacturer | TE Connectivity | |
| Brand / range | Entrelec ADO System® | |
| Model | D4/8.SF.I.ADO | |
| Manufacturer part number | 1SNA399785R0300 | |
| Product type | Fuse terminal block | |
| Function | Fused circuit connection and protection | |
| Connection technology | ADO System® / screw clamp | |
| Fuse size | 5 × 20 mm / 5 × 25 mm | |
| Fuse supplied | No | |
| Test connection | 2 mm diameter test socket on ADO side | |
| ADO rated cross-section | 1.5 mm² | |
| Rated current | 6.3 A | |
| Rated voltage | 630 V | |
| Spacing / width | 8 mm | |
| Number of levels | 1 | |
| Protection rating | IP20 at main terminals | |
| Colour | Grey | |
| Insulating material | Thermoplastic | |
| Flammability rating | UL94 V-0 | |
| Operating temperature | -55 to +110 °C | |
| DIN rail compatibility | TH35-7.5 and TH35-15 | |
| Dimensions (W × H × D) | 8 × 68.2 × 40.9 mm | |
| Product net weight | 13 g | |
| Pack quantity | 50 pieces | |
| EAN | 3472593997857 |
Frequently Asked Questions
What is the TE Connectivity D4/8.SF.I.ADO 1SNA399785R0300 used for?
The D4/8.SF.I.ADO is a DIN rail fuse terminal block used to combine conductor termination and cartridge-fuse circuit protection within industrial electrical panels.
What fuse sizes fit the D4/8.SF.I.ADO?
The terminal block is designed for 5 × 20 mm and 5 × 25 mm cartridge fuses. The fuse itself is not supplied with the terminal block.
What connection technology does the 1SNA399785R0300 use?
It combines TE Connectivity ADO System® insulation-displacement technology on one side with a conventional screw-clamp connection on the other.
Does the D4/8.SF.I.ADO have a test connection?
Yes. The terminal includes a 2 mm diameter test socket on the ADO side, providing convenient access for electrical measurement and diagnostics.
Where can the D4/8.SF.I.ADO be installed?
The terminal mounts on standard TH35-7.5 and TH35-15 DIN rails and is suitable for industrial control panels, machinery, automation systems and fused auxiliary circuits.
Trusted by Industrial Panel Builders
TE Connectivity Entrelec ADO System® terminal blocks provide industrial panel builders and automation engineers with efficient conductor termination, modular circuit protection and convenient testing facilities for dependable control-panel wiring.
