TE Connectivity ZK2.5-BL 1SNK705020R0000 is a blue ENTRELEC SNK PI-Spring feed-through terminal block with a 2.5 mm² rated cross-section, 5.2 mm spacing, 24 A IEC current rating and 1,000 V IEC voltage rating for industrial power and signal wiring.
£0.83
The TE Connectivity ZK2.5-BL 1SNK705020R0000 is a blue 2.5 mm² PI-Spring feed-through terminal block designed for fast, secure conductor termination in industrial control panels, automation systems and electrical distribution assemblies. Part of the TE Connectivity ENTRELEC SNK Series, it combines compact DIN rail installation with spring connection technology for efficient power and signal wiring.
The ZK2.5-BL provides a two-position, single-level feed-through configuration within a narrow 5.2 mm pitch. Its PI-Spring connection system supports rapid conductor installation while maintaining consistent spring contact pressure, helping reduce wiring time and simplifying assembly compared with conventional screw termination.
With a rated cross-section of 2.5 mm², an IEC current rating of 24 A and an IEC voltage rating of 1,000 V, the ZK2.5-BL delivers dependable electrical performance despite its compact dimensions. The terminal accepts flexible conductors up to 2.5 mm² and rigid stranded conductors up to 4 mm², making it a versatile solution for industrial power and signal circuits.
The TE Connectivity ZK2.5-BL uses PI-Spring technology to provide a fast and reliable alternative to conventional screw terminal connections. The spring terminal maintains consistent contact pressure on the conductor, supporting dependable electrical performance while simplifying installation and subsequent maintenance.
At only 5.2 mm wide, the ZK2.5-BL is particularly useful in densely populated control cabinets where DIN rail space is valuable. Its 24 A IEC current capability, support for rigid stranded conductors up to 4 mm² and wide -55 to +110 °C operating range make it suitable for a broad range of industrial automation, power and signal applications.
| Manufacturer | TE Connectivity |
|---|---|
| Series | ENTRELEC SNK |
| Model | ZK2.5-BL |
| Part number | 1SNK705020R0000 |
| Product type | PI-Spring terminal block |
| Terminal type | Feed-through |
| Connection type | Spring connection |
| Termination method | Spring terminal |
| Circuit application | Power & signal |
| Number of circuits | 1 |
| Number of positions | 2 |
| Number of levels | 1 |
| Gauge type | A2 / 2.3 mm diameter |
| Colour | Blue |
| Rated cross-section | 2.5 mm² |
| Product spacing | 5.2 mm |
| Rated current (IEC) | 24 A |
| Rated voltage (IEC) | 1,000 V |
| Rated current (UL) | 20 A |
| Rated current (CSA) | 20 A |
| Rated voltage (CSA) | 600 V |
| Dielectric withstand voltage | 2,200 V |
| Short-time withstand current at 1 s | 300 A |
| Flexible conductor capacity | 0.22–2.5 mm² |
| Rigid stranded conductor capacity | 0.2–4 mm² |
| Insulated ferrule capacity | 0.22–2.5 mm² |
| Non-insulated ferrule capacity | 0.22–2.5 mm² |
| Twin ferrule capacity | 0.22–0.5 mm² |
| Rigid stranded conductor range | 26–12 AWG |
| Ferrule conductor range | 26–14 AWG |
| Wire stripping length | 11 mm |
| Tool size | 3.5 mm |
| Housing material | Polyamide |
| Flammability rating | UL 94V-0 |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| DIN rail compatibility | TH35-7.5 / TH35-15 |
| Product height | 50.9 mm |
| Product width / spacing | 5.2 mm |
| Product depth | 40.2 mm |
| Product weight | 5.5 g |
| Installation temperature range | -5 to +40 °C |
| Operating temperature range | -55 to +110 °C |
The ZK2.5-BL is a PI-Spring feed-through terminal block designed for connecting power and signal conductors in industrial control panels, automation equipment and DIN rail assemblies.
The terminal uses TE Connectivity's PI-Spring spring connection technology, providing fast conductor installation and consistent spring contact pressure without a conventional screw clamp.
It accepts flexible conductors from 0.22–2.5 mm² and rigid stranded conductors from 0.2–4 mm².
The ZK2.5-BL has an IEC current rating of 24 A and an IEC voltage rating of 1,000 V, with a short-time withstand current of 300 A for 1 s.
The ZK2.5-BL has a blue polyamide housing, allowing easy visual differentiation from other terminal circuits within an electrical panel.
TE Connectivity ENTRELEC SNK PI-Spring terminal blocks provide fast, compact and dependable electrical connectivity for industrial automation, control and distribution systems, combining efficient spring termination with space-saving DIN rail installation.
● 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...