TE Connectivity M4/8.SN1 1SNA115660R0400 is an ENTRELEC SNA screw clamp disconnect terminal block with 8 mm spacing, 630 V AC operating voltage and lever isolation for industrial signal circuits.
£8.99
The TE Connectivity M4/8.SN1 1SNA115660R0400 is a durable and reliable screw clamp disconnect terminal block designed for signal circuits in industrial control, automation and electrical distribution systems. As part of the established TE Connectivity ENTRELEC SNA series, it provides secure conductor termination together with a convenient lever disconnect function for circuit isolation, testing and maintenance.
The M4/8.SN1 uses proven screw-terminal connection technology to maintain dependable electrical contact in industrial environments. Its integrated lever disconnect mechanism enables technicians to isolate a connected circuit without removing field conductors, helping simplify commissioning, diagnostics and maintenance within control cabinets and machine wiring systems.
With an operating voltage rating of 630 V AC, a maximum contact current rating of 6.3 A and conductor capacity up to 6 mm² for rigid stranded conductors, the M4/8.SN1 is suitable for a wide range of industrial signal applications. Its compact 8 mm spacing and DIN rail mounting make it easy to incorporate into organised terminal assemblies.
Disconnect terminal blocks such as the TE Connectivity M4/8.SN1 provide a convenient point for terminating and isolating electrical signal circuits inside control panels. The integrated lever disconnect allows a circuit to be opened during testing, commissioning or fault finding without disconnecting the installed conductors from the screw terminals.
The ENTRELEC SNA series is designed for dependable DIN rail-mounted industrial wiring. Its robust polyamide housing, screw-clamp termination and compatibility with common DIN rail profiles make the M4/8.SN1 suitable for machine builders, panel builders and automation engineers requiring reliable circuit management in compact electrical assemblies.
| Manufacturer | TE Connectivity / ENTRELEC |
|---|---|
| Series | ENTRELEC SNA |
| Model | M4/8.SN1 |
| Part number | 1SNA115660R0400 |
| Product type | Screw clamp disconnect terminal block |
| Block function | Disconnect |
| Disconnect type | Lever |
| Number of positions | 2 |
| Gauge type | A4 |
| Operating voltage | 630 V AC |
| Maximum UL / CSA main-circuit operating voltage | 600 V |
| Maximum contact current | 6.3 A |
| Impulse withstand voltage | 8000 V |
| Dielectric withstand voltage | 2500 V |
| Short-time withstand current at 1 s | 90 A |
| Wire size | up to 4 mm² / 12 AWG |
| Rigid stranded conductor capacity | 0.5–6 mm² |
| Flexible conductor capacity | 0.5–4 mm² |
| Termination method | Screw terminal |
| Tightening torque | 0.5 Nm |
| Wire stripping length | 9.5 mm |
| Product spacing | 8 mm |
| Dimensions (H × W × D) | 56.5 × 8 × 41 mm |
| Product length | 41 mm |
| Weight | approx. 13 g |
| Housing material | Polyamide |
| Colour | Grey |
| Protection rating | IP20 |
| Flammability rating | UL 94V-0 |
| Operating temperature | -55 to 110 °C |
| Mounting type | DIN rail |
| DIN rail compatibility | G32 / TH35-15 / TH35-7.5 |
| Circuit application | Signal |
This disconnect terminal block is designed for terminating and isolating signal circuits in industrial control panels, automation equipment and DIN rail-mounted electrical assemblies.
The M4/8.SN1 has an operating voltage rating of 630 V AC and a maximum contact current rating of 6.3 A.
The terminal accepts rigid stranded conductors from 0.5–6 mm² and flexible conductors from 0.5–4 mm², with a listed wire size up to 12 AWG.
The M4/8.SN1 incorporates a lever-type disconnect that allows the electrical circuit to be opened for testing, commissioning or maintenance without removing the connected field wiring.
The terminal block is designed for DIN rail mounting and is compatible with G32, TH35-15 and TH35-7.5 rail profiles.
TE Connectivity ENTRELEC SNA terminal blocks provide dependable electrical termination and circuit management for industrial automation, control panels, machine building and other professional electrical installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...