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1sna115666r2600 – m4/8.sfdt1
TE Connectivity 1SNA115666R2600 M4/8.SFDT1 is an 8 mm wide screw-clamp fuse terminal block for 5 × 20 mm and 5 × 25 mm fuses, with blown-fuse indication and built-in test sockets, rated at 6.3 A and 400 V IEC.
£10.46
Why Choose the TE Connectivity 1SNA115666R2600 M4/8.SFDT1 Fuse Terminal Block?
The TE Connectivity 1SNA115666R2600, also identified as M4/8.SFDT1, is an industrial screw-clamp fuse terminal block with blown-fuse indication designed to combine conductor termination and circuit protection within a compact DIN-rail assembly. Part of the established TE Connectivity / Entrelec SNA range, it is suitable for control, automation and signalling circuits where rapid identification of a failed fuse can simplify maintenance and troubleshooting.
The M4/8.SFDT1 accepts 5 × 20 mm and 5 × 25 mm fuses and incorporates a blown-fuse indicator to help technicians quickly locate a protected circuit in which the fuse has operated. Built-in test sockets further support commissioning and diagnostic work, while the fuse itself is not supplied with the terminal block.
With an IEC rated current of 6.3 A, rated voltage of 400 V and rated cross-section of 4 mm², the 1SNA115666R2600 provides dependable protection for industrial electrical circuits. Its compact 8 mm width and compatibility with G32, TH35-7.5 and TH35-15 DIN rails allow straightforward integration into densely populated control panels.
Key Advantages
- Compact fuse terminal block with blown-fuse indicator.
- Designed for 5 × 20 mm and 5 × 25 mm fuses.
- 6.3 A IEC rated current for protected industrial circuits.
- 400 V IEC rated voltage.
- Built-in test sockets assist circuit testing and diagnostics.
- Accepts flexible conductors from 0.5–4 mm² and rigid conductors from 0.5–6 mm².
- Compact 8 mm terminal width conserves DIN-rail space.
- Compatible with G32, TH35-7.5 and TH35-15 DIN rails.
Key Features
- TE Connectivity / Entrelec SNA series.
- M4/8.SFDT1 fuse terminal block.
- Screw-clamp connection technology.
- Suitable for 5 × 20 mm and 5 × 25 mm cartridge fuses.
- Integrated blown-fuse indication.
- Built-in test sockets.
- 6.3 A rated current.
- 400 V rated voltage.
- 4 kV rated impulse withstand voltage.
- 4 mm² rated cross-section.
- 8 mm terminal spacing.
- Grey polyamide insulating housing with UL 94 V-0 flammability classification.
- IP20 protection at the main terminals.
Reliable Fused Circuit Protection with Fault Indication
Fuse terminal blocks combine wiring termination and overcurrent protection in a single modular component, reducing the number of separate devices required inside an electrical panel. The M4/8.SFDT1 accepts standard cartridge fuses and incorporates a blown-fuse indicator, allowing a failed protected circuit to be identified quickly during inspection or fault finding.
Built-in test sockets make electrical testing easier without disturbing permanent field wiring, while screw-clamp connections provide secure conductor retention. Combined with its narrow 8 mm profile, IP20 construction and broad operating-temperature range, the 1SNA115666R2600 is well suited to industrial control and automation installations.
Typical Applications
- Industrial electrical control panels.
- PLC input and output circuit protection.
- Automation and machine-control systems.
- Instrumentation and signalling circuits.
- Switchgear and electrical distribution assemblies.
- Protected control-power circuits.
- OEM machinery and control-panel manufacturing.
Technical Specifications
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| Number of Levels | 1 | |
|---|---|---|
| Product Series | TE SNA | |
| Connection | Screw clamp | |
| Terminal Type | Fuse | |
| Conductor Size | 4 mm² | |
| Colour | Grey | |
| Manufacturer | TE Connectivity / Entrelec | |
| Series | SNA | |
| Model | M4/8.SFDT1 | |
| Manufacturer part number | 1SNA115666R2600 | |
| Product type | Screw-clamp fuse terminal block | |
| Function | Fuse protection with blown-fuse indication | |
| Fuse compatibility | 5 × 20 mm and 5 × 25 mm | |
| Fuse supplied | No | |
| Number of levels | 1 | |
| Connection type | Screw clamp | |
| Rated current | 6.3 A | |
| Rated voltage | 400 V | |
| Rated impulse withstand voltage | 4000 V | |
| Rated cross-section | 4 mm² | |
| Flexible conductor capacity | 0.5–4 mm² | |
| Rigid conductor capacity | 0.5–6 mm² | |
| UL/CSA rigid conductor capacity | 22–12 AWG | |
| Maximum operating voltage UL/CSA | 600 V | |
| Wire stripping length | 9.5 mm | |
| Tightening torque | 0.5 N·m to IEC 60947-1 | |
| Manufacturer tightening torque | 0.8 N·m | |
| Mounting type | DIN rail | |
| Compatible DIN rails | G32, TH35-7.5, TH35-15 | |
| Width | 8 mm | |
| Height | 56.5 mm | |
| Depth | 41 mm | |
| Product spacing | 8 mm | |
| Insulation material | Polyamide | |
| Colour | Grey | |
| Protection rating | IP20 at main terminals | |
| Flammability rating | UL 94 V-0 | |
| Pollution degree | 3 | |
| Operating temperature | -55 to +110 °C | |
| Storage temperature | -55 to +110 °C | |
| Weight | approximately 14 g | |
| EAN | 3472591156669 |
Frequently Asked Questions
What is the TE Connectivity 1SNA115666R2600 used for?
The 1SNA115666R2600 is a fuse terminal block used to provide conductor termination and replaceable fuse protection for industrial control, automation and signalling circuits.
Which fuse sizes fit the M4/8.SFDT1?
The M4/8.SFDT1 is designed for 5 × 20 mm and 5 × 25 mm cartridge fuses. The fuse is not supplied with the terminal block.
Does the M4/8.SFDT1 indicate a blown fuse?
Yes. The terminal incorporates a blown-fuse indicator to help identify a defective or interrupted protected circuit quickly.
What are the electrical ratings of the 1SNA115666R2600?
The terminal has an IEC rated current of 6.3 A, a rated voltage of 400 V and a rated impulse withstand voltage of 4 kV.
Which DIN rails are compatible with the 1SNA115666R2600?
The terminal can be installed on G32, TH35-7.5 and TH35-15 DIN rails, providing flexibility for industrial panel and switchgear assemblies.
Trusted Industrial Terminal Connectivity
TE Connectivity and Entrelec SNA fuse terminal blocks provide dependable modular circuit protection for industrial automation and control-panel applications where secure screw-clamp termination, rapid fault identification and convenient electrical testing are required.
