TE Connectivity ZS4-SP-R1 1SNK506313R0000 is a grey 4 mm²-class ENTRELEC SNK Series screw clamp disconnect terminal block with 6 mm spacing, rated at 18 A and 400 V IEC and supplied in a pack of 50.
£4.27
The TE Connectivity ZS4-SP-R1 1SNK506313R0000 is a grey 4 mm² screw clamp disconnect terminal block designed for circuit isolation, testing and organised conductor termination in industrial electrical panels. Part of the TE Connectivity ENTRELEC SNK Series, this specialised terminal combines secure screw clamp connections with a removable disconnect component system for flexible control and measurement circuit design.
The ZS4-SP-R1 provides a single circuit across two positions and has a compact 6 mm pitch. Its disconnect configuration allows the electrical path to be opened without removing the field conductors, helping simplify commissioning, fault-finding and maintenance. The corresponding disconnect plug is supplied separately, allowing the terminal assembly to be configured for the required application.
With an IEC rated current of 18 A and an IEC rated voltage of 400 V, the ZS4-SP-R1 is suitable for industrial control and signal circuits. It accepts single flexible conductors from 0.22–4 mm² and rigid stranded conductors from 0.2–4 mm², while its polyamide housing, IP20 protection and DIN rail mounting provide a robust solution for professional panel building.
Disconnect terminal blocks allow individual electrical circuits to be isolated while leaving field conductors securely terminated. The TE Connectivity ZS4-SP-R1 uses screw clamp technology for dependable conductor retention and incorporates a disconnect interface that accepts a compatible removable plug, providing a practical method of opening or reconnecting the circuit during testing, commissioning and maintenance.
The compact 6 mm terminal spacing and aligned jumper channels help the ZS4-SP-R1 integrate efficiently alongside compatible SNK Series feed-through and disconnect terminals. This makes it particularly useful in control, instrumentation and automation panels where circuit accessibility, organised wiring and efficient use of DIN rail space are important.
| Manufacturer | TE Connectivity / ENTRELEC |
|---|---|
| Series | SNK Series |
| Model | ZS4-SP-R1 |
| Part number | 1SNK506313R0000 |
| Product type | Screw clamp disconnect terminal block |
| Block function | Disconnect |
| Disconnect configuration | Removable plug, supplied separately |
| Connection method | Screw clamp |
| Number of levels | 1 |
| Number of positions | 2 |
| Number of circuits | 1 |
| Gauge type | A3-B3 |
| Single flexible conductor capacity | 0.22–4 mm² |
| Single rigid stranded conductor capacity | 0.2–4 mm² |
| Single conductor range | 24–10 AWG |
| Single insulated ferrule capacity | 0.22–4 mm² |
| Single non-insulated ferrule capacity | 0.22–4 mm² |
| Two flexible conductor capacity | 0.2–1.5 mm² |
| Two rigid stranded conductor capacity | 0.2–1.5 mm² |
| Twin ferrule capacity | 0.22–1.5 mm² |
| IEC rated current | 18 A |
| IEC rated voltage | 400 V |
| UL rated current | 20 A |
| CSA rated voltage | 150 V |
| UL / CSA maximum operating voltage | 150 V |
| Short-time withstand current (1 s) | 300 A |
| IEC impulse withstand voltage | 6000 V |
| Maximum dielectric withstand voltage | 1890 V |
| Power loss | 0.6 W |
| Product spacing | 6 mm |
| Wire stripping length | 10.5 mm |
| Tool size | 3.5 mm |
| Mounting type | DIN rail |
| DIN rail compatibility | TH35-7.5 / TH35-15 |
| Housing material | Polyamide |
| Colour | Grey |
| Protection rating | IP20 |
| Flammability rating | UL 94V-0 |
| Product height | 70.5 mm |
| Product length | 47.3 mm |
| Product depth | 47.3 mm |
| Product weight | 14.2 g |
| Operating temperature range | -55 to +110 °C |
| Installation temperature range | -5 to +40 °C |
| Pack quantity | 50 |
The ZS4-SP-R1 is a 4 mm²-class screw clamp disconnect terminal block used for connecting and isolating control, signal and instrumentation circuits in industrial electrical panels.
No. The ZS4-SP-R1 is designed to accept the compatible disconnect component, but the plug is supplied separately.
The terminal has an IEC rated current of 18 A and an IEC rated voltage of 400 V, with an impulse withstand voltage rating of 6000 V.
The terminal accepts a single flexible conductor from 0.22–4 mm² or a single rigid stranded conductor from 0.2–4 mm², with additional configurations available for two conductors and ferrules.
The terminal mounts on standard TH35-7.5 or TH35-15 DIN rails, and part number 1SNK506313R0000 is supplied in a pack quantity of 50.
TE Connectivity ENTRELEC SNK Series disconnect terminal blocks provide panel builders, automation engineers and maintenance teams with compact, dependable conductor termination and convenient circuit isolation for industrial control and instrumentation 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...