TE Connectivity ZS4-SP 1SNK505313R0000 is a grey 5.2 mm disconnect screw clamp DIN rail terminal block rated at 18 A and 400 V IEC for conductors up to 4 mm² and supplied in a pack of 50.
£2.79
The TE Connectivity ZS4-SP 1SNK505313R0000 is a grey 4 mm² disconnect screw clamp terminal block from the ENTRELEC SNK series, designed for circuits that require a convenient means of electrical isolation while maintaining an organised DIN rail terminal assembly. Its compact 5.2 mm spacing makes it particularly suitable for control panels, instrumentation systems and industrial automation equipment where wiring density and straightforward circuit access are important.
The ZS4-SP combines a 2-position, single-circuit, single-level configuration with established screw clamp connection technology. It accepts flexible conductors from 0.22–4 mm² and rigid stranded conductors from 0.2–4 mm², while mounting directly onto standard TH35-7.5 and TH35-15 DIN rails.
Rated at 18 A and 400 V IEC, the 1SNK505313R0000 provides a 6000 V impulse withstand rating and a short-time withstand current of 300 A for 1 s. Its durable grey polyamide housing offers IP20 protection and a UL 94 V-0 flammability rating, while the -55 to +110 °C operating temperature range supports demanding industrial environments. This product is supplied in a pack of 50.
The TE Connectivity ZS4-SP combines secure screw clamp termination with an integrated disconnect function, allowing circuits to be isolated at the terminal strip when testing, commissioning or maintenance is required. This makes the terminal particularly useful in control and instrumentation systems where individual circuits may need to be separated without disturbing surrounding wiring.
With conductor capacities up to 4 mm², compact 5.2 mm spacing and standard DIN rail mounting, the 1SNK505313R0000 supports space-efficient and maintainable panel layouts. Its industrial polyamide housing, IP20 protection and wide operating temperature range provide a dependable solution for machine builders, panel builders and automation engineers.
| Manufacturer | TE Connectivity |
|---|---|
| Brand / range | ENTRELEC SNK |
| Series | ZS4 |
| Manufacturer part number | 1SNK505313R0000 |
| Manufacturer description | ZS4-SP |
| Product type | Screw clamp terminal block |
| Block function | Disconnect |
| Colour | Grey |
| Housing material | Polyamide |
| Number of positions | 2 |
| Number of circuits | 1 |
| Number of levels | 1 |
| Gauge type | A3-B3 |
| Product spacing | 5.2 mm |
| IEC current rating | 18 A |
| UL current rating | 18 A |
| IEC voltage rating | 400 V |
| CSA voltage rating | 150 V |
| UL / CSA operating voltage | 150 V |
| IEC impulse withstand voltage | 6000 V |
| Maximum dielectric withstand voltage | 1890 V |
| Short-time withstand current at 1 s | 300 A |
| Power loss | 0.6 W |
| Flexible conductor capacity | 0.22–4 mm² |
| Rigid stranded conductor capacity | 0.2–4 mm² |
| Flexible conductor range | 24–10 AWG |
| Insulated ferrule capacity | 0.22–2.5 mm² |
| Non-insulated ferrule capacity | 0.22–4 mm² |
| Twin ferrule capacity | 0.22–1.5 mm² |
| Two flexible conductors per screw clamp | 0.2–1.5 mm² |
| Two rigid stranded conductors per screw clamp | 0.2–1.5 mm² |
| Wire stripping length | 10.5 mm |
| Tool size | 3.5 mm |
| DIN rail mounting | TH35-7.5 / TH35-15 |
| Height | 53 mm |
| Length | 47.3 mm |
| Depth | 47.3 mm |
| Product weight | 8.2 g |
| Installation temperature | -5 to +40 °C |
| Operating temperature | -55 to +110 °C |
| Protection rating | IP20 |
| Flammability rating | UL 94 V-0 |
| Pack quantity | 50 |
| Barcode | 3472595053131 |
The 1SNK505313R0000 is the ZS4-SP disconnect screw clamp terminal block from the TE Connectivity ENTRELEC SNK series. It has 2 positions, 1 circuit and 1 level.
The terminal accepts a single flexible conductor from 0.22–4 mm² and a single rigid stranded conductor from 0.2–4 mm². It also supports insulated, non-insulated and twin ferrules within the specified conductor ranges.
The ZS4-SP has an IEC rating of 18 A at 400 V, an IEC impulse withstand voltage of 6000 V and a short-time withstand current of 300 A for 1 s.
The 1SNK505313R0000 is designed for mounting on standard TH35-7.5 and TH35-15 DIN rails.
The TE Connectivity ZS4-SP 1SNK505313R0000 is supplied as a pack of 50 grey disconnect terminal blocks.
TE Connectivity ENTRELEC SNK terminal blocks provide panel builders, automation engineers and machine manufacturers with compact, dependable connection and disconnect technology for organised industrial control, instrumentation and equipment wiring 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...