TE Connectivity ZS4-S-R1 1SNK506310R0000 is a grey 4 mm² screw-clamp DIN-rail disconnect terminal block with a blade disconnect, 6 mm spacing and IEC ratings of 26 A and 400 V, supplied in a pack of 50.
£4.46
The TE Connectivity ZS4-S-R1 1SNK506310R0000 is a compact 4 mm² screw-clamp disconnect terminal block designed for controlled circuit isolation in industrial control panels, switchgear, instrumentation and automation systems. Part of the TE Connectivity ENTRELEC SNK series, it combines reliable screw-clamp conductor termination with an integrated blade disconnect for straightforward testing, commissioning and maintenance.
The ZS4-S-R1 incorporates a hand- or screwdriver-operated disconnect blade, allowing technicians to open the electrical circuit without removing the connected conductors. Two jumper channels are aligned with compatible ZS4 feed-through terminal blocks, helping simplify alternate distribution and maintain an organised terminal-strip layout.
With a rated cross-section of 4 mm², the ZS4-S-R1 carries an IEC rated current of 26 A and an IEC rated voltage of 400 V. Its compact 6 mm spacing, grey polyamide housing and compatibility with standard TH35 DIN rails make it well suited to professional industrial panel building where reliable circuit isolation is required.
Disconnect terminal blocks allow an electrical circuit to be opened at the terminal strip without disconnecting permanent field wiring. The ZS4-S-R1 uses an integrated blade that can be operated by hand or with a screwdriver, providing a convenient method of isolating circuits during commissioning, testing, troubleshooting and scheduled maintenance.
The terminal also incorporates two jumper channels aligned with compatible ZS4 feed-through terminal blocks, helping simplify alternate distribution arrangements. Combined with its 6 mm width and screw-clamp connections, this makes the ZS4-S-R1 a practical solution for compact and serviceable industrial terminal assemblies.
| Manufacturer | TE Connectivity |
|---|---|
| Brand / family | ENTRELEC |
| Series | SNK |
| Model | ZS4-S-R1 |
| Part number | 1SNK506310R0000 |
| Product type | Screw-clamp terminal block |
| Block function | Disconnect |
| Disconnect type | Blade |
| Connection type | Screw clamp |
| Rated cross-section | 4 mm² |
| Number of circuits | 1 |
| Number of levels | 1 |
| Number of positions | 2 |
| Gauge type | A3-B3 |
| Colour | Grey |
| IEC rated current | 26 A |
| IEC rated voltage | 400 V |
| UL rated current | 26 A |
| UL / CSA operating voltage | 150 V |
| Impulse withstand voltage | 6000 V |
| Dielectric withstand voltage | 1890 V |
| Short-time withstand current at 1 s | 480 A |
| Power loss | 0.8 W |
| Flexible conductor capacity | 0.22–4 mm² |
| Rigid stranded conductor capacity | 0.2–4 mm² |
| Insulated ferrule capacity | 0.22–4 mm² |
| Non-insulated ferrule capacity | 0.22–4 mm² |
| Two flexible conductors per screw clamp | 0.2–1.5 mm² |
| Two rigid stranded conductors per screw clamp | 0.2–1.5 mm² |
| Twin ferrule capacity | 0.22–1.5 mm² |
| Wire stripping length | 10.5 mm |
| Tool size | 3.5 mm |
| Product spacing / width | 6 mm |
| Product height | 70.5 mm |
| Product length | 51.35 mm |
| Product depth | 51.4 mm |
| Product weight | 13.2 g |
| Housing material | Polyamide |
| DIN rail mounting | TH35-7.5 / TH35-15 |
| Protection rating | IP20 |
| Flammability rating | UL 94V-0 |
| Operating temperature | -55 to +110 °C |
| Installation temperature | -5 to +40 °C |
| Pack quantity | 50 |
It is a screw-clamp disconnect DIN-rail terminal block used to connect and selectively isolate electrical circuits in industrial control, instrumentation and automation systems.
The terminal uses an integrated blade disconnect that can be operated by hand or with a screwdriver, allowing the circuit to be opened without removing the connected conductors.
The ZS4-S-R1 has an IEC rated current of 26 A and an IEC rated voltage of 400 V.
The terminal accepts flexible conductors from 0.22–4 mm² and rigid stranded conductors from 0.2–4 mm².
The TE Connectivity ZS4-S-R1 1SNK506310R0000 is supplied in a pack quantity of 50 terminal blocks.
TE Connectivity ENTRELEC SNK disconnect terminal blocks provide dependable conductor termination and convenient circuit isolation, helping panel builders and maintenance engineers create compact, organised and serviceable industrial electrical systems.
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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...