TE Connectivity M4/6.SNB 1SNA115986R0000 is a 4 mm² screw clamp switch disconnect terminal block with a blade isolator, 20 A IEC current rating and 400 V IEC voltage rating for industrial signal and control circuits.
£3.07
The TE Connectivity M4/6.SNB 1SNA115986R0000 is a compact and reliable screw clamp switch disconnect terminal block designed for circuit isolation in industrial control panels, automation equipment and signal wiring systems. As part of the established TE Connectivity ENTRELEC SNA series, it combines secure conductor termination with an accessible blade disconnect mechanism for efficient testing, commissioning and maintenance.
The M4/6.SNB incorporates a blade-type disconnect that can be operated by hand or with a screwdriver, allowing an individual circuit to be isolated without removing its connected conductors. The terminal shares the same profile as compatible M4/6 feed-through terminals, supporting neat terminal rows and aligned marking when disconnect and standard terminals are installed together.
With an IEC rated current of 20 A, IEC rated voltage of 400 V and rated conductor cross-section of 4 mm², the M4/6.SNB is well suited to industrial signal and auxiliary control circuits. Its compact 6 mm width, IP20 construction and compatibility with G32, TH35-7.5 and TH35-15 DIN rails provide flexible installation in control cabinets and machine electrical systems.
Switch disconnect terminal blocks such as the TE Connectivity M4/6.SNB provide an accessible means of opening individual electrical circuits while leaving permanently installed conductors securely terminated. The integrated blade disconnect can be operated by hand or with a suitable screwdriver, making isolation straightforward during commissioning, measurement, troubleshooting and planned maintenance.
The ENTRELEC SNA series is designed for dependable industrial panel wiring, and the M4/6.SNB combines robust screw-clamp termination with a compact 6 mm footprint and flexible DIN rail compatibility. Its electrical ratings and disconnect functionality make it particularly suitable for sensor feeds, instrumentation loops, auxiliary circuits and other signal connections that may require independent isolation.
| Manufacturer | TE Connectivity / ENTRELEC |
|---|---|
| Series | ENTRELEC SNA |
| Model | M4/6.SNB |
| Part number | 1SNA115986R0000 |
| Previous part number | 011598600 |
| Product type | Screw clamp switch disconnect terminal block |
| Block function | Disconnect |
| Disconnect type | Blade |
| Number of circuits | 1 |
| Number of poles | 2 |
| Number of positions | 2 |
| Number of levels | 1 |
| Gauge type | A4 |
| IEC rated current | 20 A |
| UL rated current | 10 A |
| CSA rated current | 15 A |
| IEC rated voltage | 400 V |
| CSA rated voltage | 600 V |
| Maximum UL / CSA main-circuit operating voltage | 300 V |
| Operating voltage | 400 V AC |
| Maximum contact current | 20 A |
| IEC impulse withstand voltage | 4000 V |
| Short-time withstand current at 1 s | 300 A |
| Rated conductor cross-section | 4 mm² |
| Flexible conductor capacity | 0.5–4 mm² |
| Rigid stranded conductor capacity | 0.5–4 mm² |
| Wire size | up to 10 AWG |
| Termination method | Screw terminal |
| Tightening torque | 0.5 Nm |
| Wire stripping length | 9.5 mm |
| Recommended tool size | 4 mm |
| Product width / spacing | 6 mm |
| Dimensions (H × W × D) | 44.5 × 6 × 44.5 mm |
| Weight | approx. 11 g |
| Housing material | Polyamide 6.6 |
| Colour | Grey / orange |
| Protection rating | IP20 |
| Flammability rating | UL 94V-0 |
| Operating temperature | -55 to +110 °C |
| Installation temperature | -5 to +40 °C |
| Mounting type | DIN rail |
| DIN rail compatibility | G32 / TH35-7.5 / TH35-15 |
| Circuit application | Signal |
| EAN | 3472591159868 |
| Country of origin | Poland |
The M4/6.SNB is a screw clamp switch disconnect terminal block used to terminate and isolate signal and control circuits in industrial control panels, automation equipment and machine electrical systems.
The M4/6.SNB has an IEC rated current of 20 A and an IEC rated voltage of 400 V.
The terminal block accepts rigid and flexible conductors from 0.5–4 mm², with a rated conductor cross-section of 4 mm² and wire capacity up to 10 AWG.
The terminal incorporates a blade-type disconnect that can be operated by hand or with a screwdriver, allowing the circuit to be isolated for testing or maintenance without removing the connected wiring.
The M4/6.SNB can be mounted on G32, TH35-7.5 and TH35-15 DIN rail profiles, providing flexible installation in industrial electrical panels.
TE Connectivity ENTRELEC SNA disconnect terminal blocks provide dependable conductor termination and convenient circuit isolation for industrial automation, instrumentation, machine building and professional control panel applications.
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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...