Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1snk706310r0000 – zk2.5-s pi-spring disc with blade – grey
TE Connectivity ZK2.5-S 1SNK706310R0000 is a grey ENTRELEC SNK PI-Spring disconnect terminal block with an integrated knife-blade disconnect, 6 mm spacing, conductor capacity up to 4 mm² / 12 AWG and IEC ratings of 20 A and 630 V.
£5.25
Why Choose the TE Connectivity ZK2.5-S PI-Spring Disconnect Terminal Block?
The TE Connectivity ZK2.5-S, manufacturer designation ZK2.5-S-R1, is a compact PI-Spring disconnect terminal block with knife-blade disconnection designed for testing, isolation and circuit distribution in industrial control and marshalling panels. Part of the TE Connectivity ENTRELEC SNK series, this grey terminal combines convenient circuit disconnection with reliable spring-force conductor termination.
Its integrated disconnect blade enables a circuit to be opened without removing connected conductors, simplifying commissioning, testing, troubleshooting and maintenance. The terminal's profile is aligned with compatible ZK2.5-SF fuse terminals, helping create neat and consistent terminal rows in marshalling cabinets and automation systems.
With a 6 mm spacing, the ZK2.5-S is rated at 20 A and 630 V to IEC and accepts rigid stranded conductors up to 4 mm² / 12 AWG. Its grey polyamide housing, IP20 protection and compatibility with standard TH35 DIN rails make it a practical choice for professional industrial wiring applications requiring convenient circuit isolation.
Key Advantages
- Integrated knife-blade disconnect enables convenient circuit isolation without removing conductors.
- PI-Spring connection technology provides fast, secure and consistent conductor termination.
- Ideal for testing, commissioning, troubleshooting and maintenance circuits.
- 20 A IEC current rating for industrial power and signal applications.
- 630 V IEC voltage rating supports demanding control-panel circuits.
- Accepts rigid stranded conductors up to 4 mm² / 12 AWG.
- 6 mm terminal spacing provides a compact DIN rail footprint.
- Profile aligned with ZK2.5-SF fuse terminals for consistent terminal assemblies.
Key Features
- TE Connectivity ENTRELEC SNK series.
- PI-Spring disconnect terminal block.
- Knife-blade / switch disconnect function.
- Two-position, single-level configuration.
- One electrical circuit.
- 6 mm product spacing.
- 20 A rated current to IEC and UL.
- 14 A rated current to CSA.
- 630 V rated voltage to IEC.
- 300 V maximum operating voltage to UL and CSA.
- 300 A short-time withstand current for 1 s.
- 6000 V IEC impulse withstand voltage.
- Grey polyamide insulating housing.
- UL 94 V-0 flammability-rated material.
- IP20 protection.
- Operating temperature range of -55 to +110 °C.
Convenient Circuit Isolation with PI-Spring Technology
Disconnect terminal blocks allow individual circuits to be opened for testing, measurement, commissioning or maintenance without disconnecting the field wiring. The ZK2.5-S incorporates a knife-blade disconnect into a compact PI-Spring terminal, allowing technicians to isolate a circuit quickly while leaving conductors securely terminated.
The ENTRELEC SNK design also aligns the ZK2.5-S profile with the ZK2.5-SF fuse terminal family, helping simplify circuit distribution in marshalling cabinets and supporting consistent terminal-row construction. Its 6 mm footprint and spring-force connections make it especially useful where compact dimensions, efficient wiring and straightforward circuit isolation are required.
Typical Applications
- Industrial control and automation panels.
- Marshalling cabinets and junction panels.
- PLC and distributed I/O circuits.
- Signal testing and measurement circuits.
- Commissioning and maintenance isolation points.
- Process control and instrumentation systems.
- Machine building and OEM electrical equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Number of Levels | 1 | |
|---|---|---|
| Product Series | TE SNK | |
| Connection | Push-in | |
| Terminal Type | Disconnect / Test | |
| Conductor Size | 2.5 mm² | |
| Colour | Grey | |
| Manufacturer | TE Connectivity | |
| Brand / range | ENTRELEC | |
| Series | SNK | |
| Model | ZK2.5-S / ZK2.5-S-R1 | |
| Manufacturer part number | 1SNK706310R0000 | |
| Product type | PI-Spring disconnect terminal block | |
| Block function | Disconnect | |
| Disconnect type | Switch / knife blade | |
| Number of circuits | 1 | |
| Number of levels | 1 | |
| Number of positions | 2 | |
| Gauge type | A2 / 2.3 mm diameter | |
| Rated cross-section | 2.5 mm² | |
| Flexible conductor capacity | 0.22–2.5 mm² | |
| Rigid stranded conductor capacity | 0.2–4 mm² / 26–12 AWG | |
| Insulated ferrule capacity | 0.22–2.5 mm² / 26–14 AWG | |
| Non-insulated ferrule capacity | 0.22–2.5 mm² / 26–14 AWG | |
| Twin ferrule capacity | 0.22–0.5 mm² / 26–20 AWG | |
| Product spacing | 6 mm | |
| Rated current (IEC) | 20 A | |
| Rated current (UL) | 20 A | |
| Rated current (CSA) | 14 A | |
| Rated voltage (IEC) | 630 V | |
| Maximum operating voltage (UL / CSA) | 300 V | |
| Short-time withstand current (1 s) | 300 A | |
| Impulse withstand voltage (IEC) | 6000 V | |
| Power loss | 1.6 W | |
| Wire stripping length | 11 mm | |
| Tool size | 3.5 mm | |
| Connection type | PI-Spring clamp | |
| Housing material | Polyamide | |
| Flammability rating | UL 94 V-0 | |
| Colour | Grey | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Compatible DIN rails | TH35-7.5 / TH35-15 | |
| Installation temperature | -5 to +40 °C | |
| Operating temperature | -55 to +110 °C | |
| Product height | 63.1 mm | |
| Product width / spacing | 6 mm | |
| Product length / depth | 47.3 mm | |
| Product weight | 8.9 g | |
| Pack quantity | 50 |
Frequently Asked Questions
What is the TE Connectivity ZK2.5-S used for?
The ZK2.5-S is a PI-Spring disconnect terminal block used to connect conductors while providing a convenient point for isolating a circuit during testing, commissioning, troubleshooting or maintenance.
How does the ZK2.5-S disconnect a circuit?
The terminal incorporates a switch / knife-blade disconnect that can open the electrical circuit without requiring the connected conductors to be removed from their spring clamps.
What are the electrical ratings of the ZK2.5-S?
The ZK2.5-S is rated at 20 A and 630 V according to IEC specifications, with a 300 A short-time withstand current for 1 s and a 6000 V IEC impulse withstand rating.
What conductor sizes can the ZK2.5-S accept?
The terminal accepts flexible conductors from 0.22–2.5 mm² and rigid stranded conductors from 0.2–4 mm² / 26–12 AWG.
What DIN rails are compatible with the ZK2.5-S?
The ZK2.5-S is designed for mounting on standard TH35-7.5 and TH35-15 DIN rails commonly used in industrial control cabinets and automation panels.
Trusted Industrial Connection Technology
TE Connectivity ENTRELEC SNK PI-Spring terminal blocks provide panel builders, automation engineers and machine manufacturers with compact, modular and dependable connection technology for efficient circuit distribution, testing and isolation in professional industrial installations.
