TE Connectivity 1SNA115665R2500 M4/8.SFDT is an 8 mm wide two-position screw-clamp fuse terminal block with lever disconnect, rated at 6.3 A and 400 V IEC for protected industrial signal and control circuits.
£13.41
The TE Connectivity 1SNA115665R2500, also identified as M4/8.SFDT, is a compact screw-clamp fuse terminal block designed for fused signal circuits in industrial control panels, automation equipment and electrical installations. Part of the established TE Connectivity / Entrelec SNA series, it combines circuit protection, disconnect functionality and dependable screw-terminal connections in a space-efficient DIN-rail format.
The M4/8.SFDT provides two positions, two poles and one level, with a lever-type disconnect arrangement that allows the protected circuit to be conveniently opened for servicing or testing. Its integrated fuse function helps protect downstream signal circuits while retaining the modular installation and straightforward wiring associated with the Entrelec SNA terminal block system.
With an IEC rated current of 6.3 A and IEC rated voltage of 400 V, the 1SNA115665R2500 is suitable for industrial signal and control applications. Its compact 8 mm width, conductor capacity up to 6 mm² for rigid stranded wiring and compatibility with G32 and TH35 DIN rails make it a versatile solution for professional panel building.
Fuse terminal blocks combine conductor termination and overcurrent protection within a single modular device, helping reduce the number of separate components required inside a control panel. The M4/8.SFDT incorporates a fuse function and lever disconnect mechanism so a signal circuit can be protected and conveniently isolated during commissioning, troubleshooting or maintenance.
The screw-clamp connections provide secure conductor retention, while the 8 mm profile allows multiple fused circuits to be arranged efficiently along the DIN rail. Its Polyamide 6.6 housing, IP20 construction and broad operating-temperature range make the 1SNA115665R2500 suitable for demanding industrial automation and control environments.
| Manufacturer | TE Connectivity / Entrelec |
|---|---|
| Series | ENTRELEC SNA |
| Model | M4/8.SFDT |
| Manufacturer part number | 1SNA115665R2500 |
| Product type | Screw-clamp fuse terminal block |
| Block function | Fuse |
| Circuit application | Signal |
| Number of circuits | 1 |
| Number of poles | 2 |
| Number of positions | 2 |
| Number of levels | 1 |
| Gauge type | A4 |
| Termination method | Screw terminal |
| Disconnect type | Lever |
| Rated current (IEC) | 6.3 A |
| Rated current (UL) | 15 A |
| Rated current (CSA) | 10 A |
| Rated voltage (IEC) | 400 V |
| Rated voltage (CSA) | 250 V |
| Maximum operating voltage (UL/CSA) | 600 V |
| Rated impulse withstand voltage (IEC) | 4 kV |
| Wire size | 4 mm² / 12 AWG |
| Flexible conductor capacity | 0.5–4 mm² |
| Rigid stranded conductor capacity | 0.5–6 mm² |
| Wire stripping length | 9.5 mm |
| Tightening torque | 0.5 N·m |
| Mounting type | DIN rail |
| Compatible DIN rails | G32, TH35-7.5, TH35-15 |
| Width | 8 mm |
| Height | 56.5 mm |
| Length | 41 mm |
| Depth | 41 mm |
| Product spacing | 8 mm |
| Housing material | Polyamide 6.6 |
| Colour | Grey |
| Protection rating | IP20 |
| Flammability rating | UL 94 V-0 |
| Installation temperature | -5 to +40 °C |
| Operating temperature | -55 to +110 °C |
| Weight | approximately 14 g |
The 1SNA115665R2500 is a fuse terminal block designed to provide conductor termination, circuit protection and convenient isolation for industrial signal and control circuits.
The M4/8.SFDT has an IEC rated current of 6.3 A and an IEC rated voltage of 400 V.
The terminal accommodates flexible conductors from 0.5–4 mm² and rigid stranded conductors from 0.5–6 mm².
Yes. The terminal uses a lever-type disconnect mechanism, allowing the circuit to be conveniently opened for testing, troubleshooting and maintenance.
The terminal is designed for installation on G32, TH35-7.5 and TH35-15 DIN rails.
TE Connectivity and Entrelec SNA terminal blocks provide dependable modular connectivity and circuit protection for industrial automation, machinery and control-panel applications where secure termination, convenient isolation and reliable electrical performance are essential.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...