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1sna399768r2100 – d4/8,sflt2,i,ado2
TE Connectivity D4/8.SFLT2.I.ADO2 1SNA399768R2100 is a 6.3 A 500 V fuse DIN rail terminal block for 5 × 20 mm and 5 × 25 mm fuses with a 110–230 V AC neon blown-fuse indicator, two 2 mm test sockets and combined screw-clamp and ADO System connections.
Why Choose the TE Connectivity D4/8.SFLT2.I.ADO2 1SNA399768R2100 Fuse Terminal Block?
The TE Connectivity D4/8.SFLT2.I.ADO2 1SNA399768R2100 is a grey fuse terminal block with blown-fuse indication, two test sockets and combined screw-clamp / ADO System connection technology, designed for circuit protection and diagnostics in industrial control panels, machinery and automation systems. Part of the established Entrelec SNA ADO terminal block range, it accommodates standard 5 × 20 mm and 5 × 25 mm cartridge fuses.
The D4/8.SFLT2.I.ADO2 incorporates a 110–230 V AC neon blown-fuse indicator, allowing maintenance personnel to identify an open fuse quickly. Two integrated 2 mm test sockets provide convenient access for electrical measurement, while the hybrid screw-clamp and ADO System connections combine conventional termination with fast insulation-displacement wiring.
With a 2.5 mm² rated cross-section, 6.3 A rated current and 500 V rated voltage, the terminal provides reliable circuit protection in a compact 8 mm-wide format. It mounts on standard TH35 DIN rail and accepts up to two conductors per ADO System connection, making it well suited to space-conscious industrial panel designs.
Key Advantages
- Integrated fuse holder for 5 × 20 mm and 5 × 25 mm cartridge fuses.
- 110–230 V AC neon blown-fuse indicator assists rapid fault identification.
- Two integrated 2 mm test sockets provide convenient measurement access.
- Combines screw-clamp and ADO System insulation-displacement connections.
- 6.3 A rated current and 500 V rated voltage.
- Up to two conductors can be terminated per ADO System connection.
- Compact 8 mm width helps maximise available DIN rail space.
Key Features
- TE Connectivity / Entrelec SNA ADO fuse terminal block.
- D4/8.SFLT2.I.ADO2 configuration.
- Suitable for 5 × 20 mm and 5 × 25 mm fuses.
- 110–230 V AC neon blown-fuse indication.
- Two 2 mm test sockets.
- 2.5 mm² rated cross-section.
- 6.3 A IEC rated current.
- 500 V IEC rated voltage.
- 6 kV rated impulse withstand voltage.
- 300 A short-time withstand current for 1 s.
- IP20 protection at the main terminals.
- Grey polyamide insulating body with UL94 V-0 flammability rating.
Circuit Protection with Fast ADO Connection Technology
Fuse terminal blocks provide individual circuit protection directly at the terminal strip, helping isolate faults and simplify replacement during maintenance. The D4/8.SFLT2.I.ADO2 adds a visible neon blown-fuse indicator and dedicated test sockets, making fault diagnosis and electrical measurement more convenient in industrial control systems.
Its hybrid connection arrangement combines standard screw-clamp termination with Entrelec ADO System insulation-displacement technology. This provides flexibility for conventional field wiring while allowing rapid ADO termination, with up to two conductors accommodated at each ADO connection.
Typical Applications
- Industrial electrical control panels.
- Fused control and auxiliary circuits.
- PLC and automation cabinets.
- Instrumentation and signal circuits.
- Machine-building electrical systems.
- Process-control installations.
- Electrical testing and diagnostics.
- DIN rail circuit 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 | 2.5 mm² | |
| Colour | Grey | |
| Manufacturer | TE Connectivity / Entrelec | |
| Series | SNA ADO | |
| Model | D4/8.SFLT2.I.ADO2 | |
| Part number | 1SNA399768R2100 | |
| Product type | Fuse terminal block | |
| Function | Fused circuit protection with blown-fuse indication | |
| Fuse size | 5 × 20 mm / 5 × 25 mm | |
| Fuse supplied | No | |
| Blown-fuse indicator | Neon, 110–230 V AC | |
| Test sockets | 2 × 2 mm diameter | |
| Connection technology | Screw clamp / ADO System | |
| Number of levels | 1 | |
| Rated cross-section | 2.5 mm² | |
| Rated current | 6.3 A | |
| Rated voltage | 500 V | |
| Rated impulse withstand voltage | 6 kV | |
| Rated short-time withstand current | 300 A for 1 s | |
| ADO conductor capacity | 1–2.5 mm² | |
| Screw-clamp rigid conductor capacity | 0.2–4 mm² | |
| Screw-clamp flexible conductor capacity | 0.22–4 mm² | |
| Wire stripping length | 9.5 mm | |
| Width / spacing | 8 mm | |
| Height | 68.2 mm | |
| Depth | 40.9 mm | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail | |
| Compatible rails | TH35-7.5 / TH35-15 | |
| Insulation material | Polyamide | |
| Flammability rating | UL94 V-0 | |
| Colour | Grey | |
| Operating temperature | -55 to +110 °C | |
| Net weight | 13 g | |
| Pack quantity | 50 pieces | |
| EAN | 3472593997680 |
Frequently Asked Questions
What is the TE Connectivity D4/8.SFLT2.I.ADO2 1SNA399768R2100 used for?
It is a fuse terminal block used to provide individual circuit protection, blown-fuse indication and convenient test access in industrial control and automation systems.
What fuse sizes does the D4/8.SFLT2.I.ADO2 accept?
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.
Does the 1SNA399768R2100 have a blown-fuse indicator?
Yes. It incorporates a 110–230 V AC neon indicator to help identify a blown fuse quickly.
What are the electrical ratings of the D4/8.SFLT2.I.ADO2?
The terminal has a 2.5 mm² rated cross-section, a rated current of 6.3 A and a rated voltage of 500 V.
What connection technology does the D4/8.SFLT2.I.ADO2 use?
It combines a conventional screw clamp with ADO System insulation-displacement technology, allowing up to two conductors per ADO connection.
Trusted Industrial Circuit Protection Technology
TE Connectivity and Entrelec SNA ADO fuse terminal blocks combine circuit protection, diagnostic access and flexible conductor termination for professional industrial control, automation and machine-building installations.
