Why Choose the TE Connectivity ZK2.5-BK 1SNK705066R0000 PI-Spring Terminal Block?
The TE Connectivity ZK2.5-BK 1SNK705066R0000 is a black PI-Spring feed-through terminal block from the ENTRELEC SNK Series, designed for fast, secure conductor termination in industrial control panels, machinery and automation systems. Its PI-Spring technology combines push-in connection for suitably prepared conductors with spring-mode operation for other conductor types, helping streamline panel wiring.
With a compact 5.2 mm pitch, two positions, one circuit and a single-level configuration, the ZK2.5-BK supports high-density DIN rail terminal assemblies. It accepts flexible conductors from 0.22–2.5 mm² and rigid stranded conductors from 0.2–4 mm², as well as insulated and non-insulated ferrules from 0.22–2.5 mm².
The ZK2.5-BK is rated at 24 A and 1000 V IEC, with 20 A UL and CSA current ratings and an 8000 V IEC impulse withstand voltage. Its black polyamide housing, IP20 protection, DIN rail compatibility and operating temperature range of -55 to +110 °C make it a practical choice for professional industrial wiring.
Key Advantages
- PI-Spring connection technology combines convenient push-in wiring with spring-mode conductor connection.
- Compact 5.2 mm pitch helps maximise available DIN rail space.
- 24 A IEC current rating for industrial power, control and signal circuits.
- 1000 V IEC voltage rating provides substantial electrical capability in a compact terminal.
- Accepts flexible conductors from 0.22–2.5 mm² and rigid stranded conductors from 0.2–4 mm².
- 300 A short-time withstand current for 1 s.
- Black housing supports clear identification in colour-coded terminal assemblies.
- Standard DIN rail mounting simplifies installation alongside other SNK Series components.
Key Features
- TE Connectivity ENTRELEC SNK Series.
- ZK2.5-BK PI-Spring feed-through terminal block.
- Black polyamide housing.
- PI-Spring / spring clamp connection technology.
- Single-level, two-position, one-circuit configuration.
- 5.2 mm product spacing.
- 24 A IEC current rating.
- 20 A UL and CSA current ratings.
- 1000 V IEC voltage rating.
- 600 V CSA voltage rating.
- 600 V maximum UL/CSA main-circuit operating voltage.
- 300 A short-time withstand current at 1 s.
- 8000 V IEC impulse withstand voltage.
- 2200 V maximum dielectric withstand voltage.
- 1 W power loss.
- IP20 protection rating.
- UL 94V-0 flammability-rated housing.
- Compatible with TH35-15 and TH35-7.5 DIN rails.
- Supplied in a pack quantity of 50.
Reliable PI-Spring Connections for Efficient Panel Wiring
TE Connectivity PI-Spring technology combines two conductor-connection methods within one terminal design. Suitably prepared solid conductors and stranded conductors fitted with ferrules can be inserted using push-in operation, while spring-mode operation with a screwdriver enables convenient connection of non-prepared stranded conductors. This flexibility helps reduce conductor preparation and installation time across varied panel-wiring tasks.
The ZK2.5-BK combines this connection system with a compact 5.2 mm pitch, 24 A IEC current rating and 1000 V IEC voltage rating. Its support for conductors up to 4 mm², standard DIN rail mounting and black identification housing make it suitable for organised, high-density industrial terminal assemblies.
Typical Applications
- Industrial control panels and automation cabinets.
- PLC and control-system wiring.
- Machine building and OEM electrical equipment.
- Power and signal distribution circuits.
- Process control and instrumentation systems.
- Building automation and electrical controls.
- Manufacturing and production equipment.
- DIN rail assemblies requiring black PI-Spring feed-through terminals.
