1snk705151r0000 – zk2.5-pe-3p pi-spring clamp – green yell

Why Choose the TE Connectivity ZK2.5-PE-3P PI-Spring Earth Terminal?

The TE Connectivity ZK2.5-PE-3P, part number 1SNK705151R0000, is a compact three-position PI-Spring protective earth terminal block designed for reliable grounding connections in industrial control panels, machinery and electrical distribution systems. Part of the TE Connectivity ENTRELEC SNK Series, it combines efficient spring termination with a space-saving DIN rail format.

The ZK2.5-PE-3P provides three connection positions within a single-level ground terminal, making it particularly useful where multiple conductors need to be incorporated into a protective earth circuit. Its PI-Spring connection system enables fast and dependable conductor termination without conventional screw clamping, while the green and yellow housing provides immediate visual identification of the earth connection.

Designed around a 2.5 mm² nominal wire size, the terminal accepts flexible conductors from 0.22–2.5 mm² and rigid stranded conductors from 0.2–4 mm². Its compact 5.2 mm spacing, TH35 DIN rail compatibility and robust polyamide construction make it well suited to high-density industrial panel installations.

Key Advantages

• Dedicated three-position protective earth terminal for industrial grounding circuits.
• PI-Spring connection technology provides fast and reliable conductor termination.
• Three connection positions within a single-level terminal block.
• Designed around a 2.5 mm² nominal wire size.
• Accepts rigid stranded conductors up to 4 mm².
• Compact 5.2 mm spacing helps maximise DIN rail installation density.
• Green and yellow housing provides clear protective earth identification.

Key Features

• TE Connectivity ENTRELEC SNK Series.
• PI-Spring ground terminal block.
• 3 positions with 1 electrical circuit.
• Single-level terminal configuration.
• 5.2 mm product spacing.
• 300 A short-time withstand current for 1 s.
• 8 kV IEC impulse withstand voltage.
• Flexible conductor capacity from 0.22–2.5 mm².
• Rigid stranded conductor capacity from 0.2–4 mm².
• Compatible with TH35-7.5 and TH35-15 DIN rails.
• Polyamide housing with UL 94V-0 flammability rating.
• IP20 ingress protection rating.

Reliable Three-Position Protective Earth Connections

Protective earth terminal blocks provide an essential connection between equipment conductors and the grounding system. The ZK2.5-PE-3P offers three connection positions within one terminal, allowing multiple conductors to be integrated efficiently into a common protective earth circuit while maintaining a compact DIN rail footprint.

PI-Spring technology provides consistent spring contact pressure and simplifies wiring compared with conventional screw-clamp termination. Combined with the ENTRELEC SNK Series modular design, the ZK2.5-PE-3P provides a practical solution for machine builders, panel builders and automation engineers requiring dependable and clearly identifiable grounding connections.

Typical Applications

• Protective earth connections in industrial control panels.
• Machine building and OEM equipment.
• Factory automation systems.
• Motor control centres and electrical cabinets.
• Power and signal distribution assemblies.
• Multi-conductor DIN rail grounding applications.