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1snk705320r0000 – zk2.5-s-bl pi-spring disc with blade – b
TE Connectivity ZK2.5-S-BL 1SNK705320R0000 is a blue two-position PI-Spring DIN rail disconnect terminal block with blade isolation, rated at 20 A and 630 V IEC for industrial control, testing and instrumentation circuits.
£1.85
Why Choose the TE Connectivity ZK2.5-S-BL 1SNK705320R0000 PI-Spring Disconnect Terminal?
The TE Connectivity ZK2.5-S-BL 1SNK705320R0000 is a compact PI-Spring disconnect terminal block with blade disconnect designed for circuit isolation, testing and measurement in industrial control panels and automation systems. As part of the TE Connectivity ENTRELEC SNK series, it combines efficient spring connection technology with a disconnect function that allows circuits to be conveniently opened for testing, commissioning and maintenance.
The ZK2.5-S-BL features two connection positions, one circuit and a single-level design. Its integrated blade disconnect provides a practical method of isolating the circuit without removing conductors, making the terminal particularly useful in control, instrumentation and measurement applications. The blue polyamide housing provides clear circuit identification, while the compact 5.2 mm spacing supports high-density DIN rail installations.
With an IEC rated current of 20 A and rated voltage of 630 V, the ZK2.5-S-BL provides dependable electrical performance for industrial wiring. It accepts flexible conductors from 0.22–2.5 mm² and rigid stranded conductors from 0.2–4 mm², while its DIN rail format enables straightforward integration into electrical cabinets and machinery control systems.
Key Advantages
- Integrated blade disconnect function enables convenient circuit isolation for testing and maintenance.
- PI-Spring connection technology provides fast, secure and vibration-resistant conductor termination.
- 20 A IEC rated current suitable for industrial control, instrumentation and measurement circuits.
- 630 V IEC rated voltage for demanding industrial electrical applications.
- Compact 5.2 mm terminal spacing helps maximise wiring density on the DIN rail.
- Blue housing provides clear identification within organised terminal assemblies.
Key Features
- TE Connectivity ENTRELEC SNK series.
- PI-Spring disconnect terminal block.
- Integrated blade disconnect for circuit isolation.
- Two-position, single-circuit configuration.
- 20 A IEC rated current.
- 630 V IEC rated voltage.
- 20 A UL rated current.
- 300 V UL / CSA operating voltage rating.
- 300 A short-time withstand current at 1 s.
- 6000 V IEC impulse withstand voltage.
- Compatible with TH35-7.5 and TH35-15 DIN rails.
- Blue polyamide housing with UL 94V-0 flammability rating.
Reliable Circuit Isolation for Industrial Control Systems
Disconnect terminal blocks such as the TE Connectivity ZK2.5-S-BL allow an electrical circuit to be opened at the terminal without disconnecting the installed wiring. The integrated blade disconnect makes circuit isolation straightforward, supporting efficient testing, fault finding, commissioning and maintenance within industrial control and instrumentation systems.
PI-Spring technology provides consistent spring pressure on connected conductors, helping maintain reliable electrical contact in demanding industrial environments. Combined with the disconnect functionality and compact DIN rail format, the ZK2.5-S-BL provides a practical solution for applications where convenient circuit isolation and high wiring density are required.
Typical Applications
- Industrial control panels and electrical cabinets.
- Instrumentation and measurement circuits.
- PLC and industrial automation wiring.
- Control circuit isolation and testing.
- Commissioning and fault-finding circuits.
- Industrial machinery and production equipment.
- OEM equipment and industrial panel building.
Technical Specifications
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| Number of Levels | 1 | |
|---|---|---|
| Connection | Push-in | |
| Terminal Type | Disconnect / Test | |
| Product Series | TE SNK | |
| Colour | Blue | |
| Manufacturer | TE Connectivity | |
| Brand / range | ENTRELEC SNK | |
| Series | ZK | |
| Model | ZK2.5-S-BL | |
| Manufacturer part number | 1SNK705320R0000 | |
| Product type | PI-Spring disconnect terminal block | |
| Terminal function | Disconnect / circuit isolation | |
| Disconnect type | Blade disconnect | |
| Connection type | PI-Spring connection | |
| Number of positions | 2 | |
| Number of circuits | 1 | |
| Number of levels | 1 | |
| Gauge type | A2 / 2.3 mm diameter | |
| Rated current (IEC) | 20 A | |
| Rated current (UL) | 20 A | |
| Rated current (CSA) | 14 A | |
| Rated voltage (IEC) | 630 V | |
| Rated voltage (CSA) | 300 V | |
| Operating voltage (UL / CSA) | 300 V | |
| Impulse withstand voltage (IEC) | 6000 V | |
| Short-time withstand current at 1 s | 300 A | |
| Power loss | 1 W | |
| 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 | |
| Insulated ferrule conductor range | 26–12 AWG | |
| Non-insulated ferrule conductor range | 26–14 AWG | |
| Twin ferrule conductor range | 26–20 AWG | |
| Wire stripping length | 11 mm | |
| Tool size | 3.5 mm | |
| Terminal spacing | 5.2 mm | |
| Housing material | Polyamide | |
| Colour | Blue | |
| Protection rating | IP20 | |
| Flammability rating | UL 94V-0 | |
| Mounting type | DIN rail | |
| DIN rail compatibility | TH35-7.5 / TH35-15 | |
| Dimensions (H × W × D) | 65.3 × 5.2 × 44.2 mm | |
| Weight | 8.1 g | |
| Operating temperature | -55–110 °C | |
| Installation temperature | -5–40 °C |
Frequently Asked Questions
What is the TE Connectivity ZK2.5-S-BL 1SNK705320R0000 used for?
This PI-Spring terminal block is designed for circuit connection and isolation in industrial control, instrumentation and automation systems, allowing circuits to be disconnected for testing, commissioning and maintenance.
Does the ZK2.5-S-BL include a disconnect function?
Yes. The ZK2.5-S-BL is a disconnect terminal block with an integrated blade disconnect, allowing the electrical circuit to be opened without removing the connected conductors.
What conductor sizes does the ZK2.5-S-BL support?
The terminal accepts flexible conductors from 0.22–2.5 mm² and rigid stranded conductors from 0.2–4 mm².
What are the current and voltage ratings of the ZK2.5-S-BL?
The terminal is rated at 20 A and 630 V under IEC specifications. Its UL current rating is 20 A, with a maximum UL / CSA main-circuit operating voltage of 300 V.
Where is the ZK2.5-S-BL typically installed?
The terminal is designed for mounting on TH35-7.5 or TH35-15 DIN rails inside industrial control panels, electrical cabinets, instrumentation systems and automation equipment.
Trusted Industrial Terminal Technology
TE Connectivity ENTRELEC SNK PI-Spring disconnect terminals combine efficient spring connection technology, compact DIN rail installation and convenient circuit isolation for reliable industrial control, testing and automation applications.
