TE Connectivity ZS4-S-R1-OR 1SNK506330R0000 is an orange ENTRELEC SNK screw clamp disconnect terminal block with a blade disconnect, 0.2–4 mm² conductor capacity and IEC ratings of 26 A and 400 V, supplied in a pack of 50.
£4.64
The TE Connectivity ZS4-S-R1-OR 1SNK506330R0000 is a compact screw clamp disconnect terminal block designed for reliable circuit isolation in industrial control panels, machinery and automation systems. Part of the ENTRELEC SNK series, this orange terminal combines secure screw clamp conductor termination with an integrated blade disconnect for convenient switching and isolation.
The ZS4-S-R1-OR provides two connection positions, one circuit and one level within a 6 mm terminal spacing. Its blade disconnect allows the electrical circuit to be opened without removing the connected conductors, making it particularly useful for commissioning, troubleshooting, testing and maintenance applications.
With an IEC rating of 26 A and 400 V, the ZS4-S-R1-OR accommodates flexible conductors from 0.22–4 mm² and rigid stranded conductors from 0.2–4 mm². Its orange polyamide housing, IP20 protection and compatibility with standard TH35 DIN rails provide a dependable solution for professional industrial wiring. The 1SNK506330R0000 is supplied in a pack of 50.
Disconnect terminal blocks provide a clearly defined point at which an electrical circuit can be opened without removing the connected conductors. The TE Connectivity ZS4-S-R1-OR uses an integrated blade disconnect together with dependable screw clamp connections, allowing technicians to isolate circuits efficiently during commissioning, fault finding and maintenance.
The compact ENTRELEC SNK design combines a 6 mm terminal spacing with conductor capacity up to 4 mm² and an IEC rating of 26 A at 400 V. Its orange housing also enables straightforward visual identification within mixed terminal assemblies, helping panel builders create organised and serviceable industrial wiring systems.
| Manufacturer | TE Connectivity |
|---|---|
| Brand / product family | ENTRELEC |
| Series | SNK |
| Model | ZS4-S-R1-OR |
| Manufacturer part number | 1SNK506330R0000 |
| Product type | Screw clamp disconnect terminal block |
| Block function | Disconnect |
| Disconnect type | Blade |
| Connection method | Screw clamp |
| Number of positions | 2 |
| Number of circuits | 1 |
| Number of levels | 1 |
| Gauge type | A3-B3 |
| IEC current rating | 26 A |
| IEC voltage rating | 400 V |
| UL current rating | 26 A |
| CSA voltage rating | 150 V |
| UL / CSA maximum operating voltage | 150 V |
| Short-time withstand current at 1 s | 480 A |
| Dielectric withstand voltage | 1890 V |
| IEC impulse withstand voltage | 6000 V |
| Power loss | 0.8 W |
| Flexible conductor capacity | 0.22–4 mm² |
| Rigid stranded conductor capacity | 0.2–4 mm² |
| Single conductor range | 24–10 AWG |
| 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 | 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 |
| Colour | Orange |
| DIN rail mounting | TH35-7.5 / TH35-15 |
| Protection rating | IP20 |
| Flammability rating | UL 94V-0 |
| Installation temperature range | -5 to +40 °C |
| Operating temperature range | -55 to +110 °C |
| Pack quantity | 50 |
The ZS4-S-R1-OR is a screw clamp disconnect terminal block used to provide a secure conductor connection with a convenient blade-operated isolation point in industrial control and automation circuits.
The terminal has an IEC current rating of 26 A and an IEC voltage rating of 400 V.
The terminal accepts single flexible conductors from 0.22–4 mm² and rigid stranded conductors from 0.2–4 mm².
The terminal incorporates an integrated blade disconnect that opens the electrical circuit while allowing the connected conductors to remain securely terminated in their screw clamps.
The ZS4-S-R1-OR has an orange polyamide housing, providing clear visual differentiation within an organised DIN rail terminal assembly.
The terminal is designed for DIN rail mounting and is compatible with TH35-7.5 and TH35-15 rails.
The 1SNK506330R0000 is supplied in a pack quantity of 50 terminal blocks.
TE Connectivity ENTRELEC SNK terminal blocks provide compact and dependable connection and isolation technology for professional industrial wiring, helping panel builders, automation engineers and machine manufacturers create organised and maintainable 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...