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1sna115657r2500 – m4/8 sf
TE Connectivity 1SNA115657R2500 M4/8.SF is an 8 mm grey screw-clamp fuse terminal block rated at 6.3 A and 630 V IEC for protected industrial signal and automation circuits.
£2.88
Why Choose the TE Connectivity 1SNA115657R2500 M4/8.SF Fuse Terminal Block?
The TE Connectivity 1SNA115657R2500, also identified as M4/8.SF, is a compact screw-clamp fuse terminal block from the ENTRELEC SNA range. Designed for industrial signal circuits, control panels and automation equipment, it combines secure conductor termination with an accessible fuse function for convenient circuit protection and maintenance.
The M4/8.SF provides two connection positions on a single level and uses proven screw-terminal technology for dependable electrical connections. Its lever-type disconnect arrangement provides convenient access to the fuse circuit, helping simplify inspection, troubleshooting and servicing without compromising the organisation of the terminal assembly.
With an IEC rating of 6.3 A at 630 V, an 8 mm width and support for conductors up to 4 mm² nominal / 12 AWG, the 1SNA115657R2500 is well suited to compact industrial control cabinets. It mounts on G32, TH 35-7.5 or TH 35-15 DIN rails and features a robust grey polyamide 6.6 housing.
Key Advantages
- Integrated fuse terminal block for protection of industrial signal circuits.
- 6.3 A IEC current rating with a 630 V IEC voltage rating.
- Compact 8 mm width helps conserve DIN rail space.
- Reliable screw-terminal connection technology for serviceable conductor termination.
- Lever-type disconnect supports convenient fuse circuit access.
- Compatible with G32, TH 35-7.5 and TH 35-15 DIN rails.
Key Features
- TE Connectivity / ENTRELEC M4/8.SF fuse terminal block.
- Fuse block function for signal circuit applications.
- Two positions, one circuit and one level.
- 630 V AC operating voltage.
- 6.3 A IEC rated current.
- Nominal conductor size of 4 mm² / 12 AWG.
- IP20 protection rating.
- Grey polyamide 6.6 housing with UL 94V-0 flammability rating.
Reliable Fuse Protection for Industrial Signal Circuits
Fuse terminal blocks combine conductor termination and overcurrent protection within a modular DIN rail assembly. This allows individual circuits to be protected at the terminal level while keeping fuse access convenient for inspection, replacement and electrical troubleshooting.
The M4/8.SF is specifically configured for signal applications and combines its fuse function with robust screw-clamp termination. Its compact construction, broad DIN rail compatibility and industrial temperature range make it suitable for dependable integration into machinery and automation control systems.
Typical Applications
- Industrial electrical control panels.
- PLC and automation signal circuits.
- Machine control and production equipment.
- Instrumentation and monitoring circuits.
- Fused control and signal wiring.
- Industrial DIN rail terminal assemblies.
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 | |
| Model | M4/8 | |
| Manufacturer | TE Connectivity / ENTRELEC | |
| Series | ENTRELEC SNA | |
| Manufacturer part number | 1SNA115657R2500 | |
| 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 | |
| IEC rated current | 6.3 A | |
| IEC rated voltage | 630 V | |
| UL rated current | 15 A | |
| CSA rated current | 10 A | |
| CSA rated voltage | 250 V | |
| Maximum UL / CSA main-circuit operating voltage | 600 V | |
| IEC impulse withstand voltage | 8000 V | |
| Nominal conductor size | 4 mm² / 12 AWG | |
| Rigid stranded conductor capacity | 0.5–6 mm² | |
| Flexible conductor capacity | 0.5–4 mm² | |
| Wire stripping length | 9.5 mm | |
| Tightening torque | 0.5 Nm | |
| Disconnect type | Lever | |
| Width / spacing | 8 mm | |
| Height | 56.5 mm | |
| Depth | 41 mm | |
| Weight | 14 g | |
| Colour | Grey | |
| Housing material | Polyamide 6.6 | |
| Protection rating | IP20 | |
| Flammability rating | UL 94V-0 | |
| Operating temperature | -55 to +110 °C | |
| DIN rail mounting | G32 / TH 35-7.5 / TH 35-15 |
Frequently Asked Questions
What is the TE Connectivity 1SNA115657R2500?
The 1SNA115657R2500 is an M4/8.SF screw-clamp fuse terminal block from the ENTRELEC SNA range, designed for protected signal wiring in industrial control and automation systems.
What are the IEC electrical ratings of the M4/8.SF?
The M4/8.SF has an IEC rated current of 6.3 A and an IEC rated voltage of 630 V.
What conductor sizes can the 1SNA115657R2500 accommodate?
The terminal has a nominal conductor size of 4 mm² / 12 AWG, with specified capacity up to 6 mm² for rigid stranded conductors and 4 mm² for flexible conductors.
What is the protection rating of the M4/8.SF?
The TE Connectivity M4/8.SF has an IP20 protection rating and uses a polyamide 6.6 housing with a UL 94V-0 flammability rating.
Which DIN rails are compatible with the M4/8.SF?
The terminal block can be mounted on G32, TH 35-7.5 and TH 35-15 DIN rails, providing flexibility for industrial panel construction.
Trusted Industrial Circuit Protection
TE Connectivity’s ENTRELEC SNA terminal block range combines robust industrial connection technology with specialised functions such as fuse protection, helping panel builders create organised, serviceable and dependable control and automation wiring systems.
