TE Connectivity ZS4-D2 1SNK505210R0000 is a 4 mm² double deck feed-through DIN rail terminal block with screw connections, two levels, four positions and IEC ratings of 29 A and 800 V.
£2.12
The TE Connectivity ZS4-D2 1SNK505210R0000 is a compact and highly reliable double deck feed-through terminal block designed for space-efficient power and signal connections in industrial control panels, switchgear and automation systems. As part of the TE Connectivity ENTRELEC SNK series, it combines two connection levels within a narrow terminal profile, helping panel builders increase wiring density while maintaining clear and accessible connections.
This terminal block uses proven screw clamp connection technology to provide secure conductor termination in demanding industrial applications. Its two-level configuration provides two independent circuits and four connection positions, making it particularly useful where control-panel space is limited and a high density of electrical connections is required.
With a nominal conductor capacity of 4 mm², an IEC current rating of 29 A and an IEC voltage rating of 800 V, the ZS4-D2 is suitable for a wide range of power and signal circuits. Its slim 5.2 mm terminal spacing and DIN rail mounting format provide an efficient solution for compact industrial electrical assemblies.
Double deck terminal blocks allow two independent electrical circuits to be accommodated within the footprint of a single terminal position. This makes them particularly valuable in high-density control cabinets where DIN rail space is limited while maintaining convenient access to individual conductors for installation, testing and maintenance.
The ZS4-D2 combines the compact architecture of the ENTRELEC SNK series with screw clamp termination and a broad conductor range. Its 29 A IEC current rating, 800 V IEC voltage rating and two-level configuration make it a versatile solution for power and signal distribution in industrial machinery, process control and factory automation systems.
| Manufacturer | TE Connectivity |
|---|---|
| Brand / product family | ENTRELEC |
| Series | SNK / ZS |
| Model | ZS4-D2 |
| Manufacturer part number | 1SNK505210R0000 |
| Product type | Double deck feed-through terminal block |
| Terminal size | 4 mm² |
| Connection type | Screw connection |
| Block function | Feed-through |
| Number of levels | 2 |
| Number of circuits | 2 |
| Number of positions | 4 |
| Rated current (IEC) | 29 A |
| Rated current (UL / CSA) | 20 A |
| Rated voltage (IEC) | 800 V |
| Rated voltage (UL / CSA) | 300 V |
| Impulse withstand voltage (IEC) | 8000 V |
| Dielectric withstand voltage | 2000 V |
| Short-time withstand current at 1 s | 480 A |
| Flexible conductor range | 0.22–4 mm² / 24–12 AWG |
| Rigid stranded conductor range | 0.2–4 mm² / 24–12 AWG |
| Insulated ferrule capacity | 0.22–2.5 mm² / 24–14 AWG |
| Wire stripping length | 10 mm |
| Terminal spacing | 5.2 mm |
| Housing material | Polyamide |
| Colour | Grey |
| Protection rating | IP20 |
| Flammability rating | UL 94V-0 |
| Mounting type | DIN rail |
| DIN rail compatibility | TH35-7.5 / TH35-15 |
| Height | 70.4 mm |
| Length / depth | 65.5 mm |
| Weight | 15.3 g |
| Operating temperature | -55–110 °C |
| Installation temperature | -5–40 °C |
The ZS4-D2 is a double deck feed-through terminal block used to connect power and signal conductors in industrial control panels, switchgear, machinery and automation systems.
The terminal has a nominal 4 mm² size and accepts conductors up to 4 mm², with the precise permitted range depending on conductor and ferrule type.
The ZS4-D2 is rated at 29 A and 800 V under IEC specifications, with UL and CSA ratings of 20 A and 300 V.
The terminal block has two levels, two independent circuits and four connection positions, providing a compact solution for high-density panel wiring.
The ZS4-D2 is designed for DIN rail mounting and supports TH35-7.5 and TH35-15 mounting rails, making it suitable for standard industrial electrical cabinets and control panels.
TE Connectivity ENTRELEC SNK terminal blocks are designed to provide reliable, space-efficient electrical connections for panel builders, automation engineers and machine manufacturers working with modern industrial control and power distribution systems.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...