Why Choose the TE Connectivity ZK4-PE-3P 1SNK706151R0000 PI-Spring Earth Terminal?
The TE Connectivity ZK4-PE-3P 1SNK706151R0000 is a compact 4 mm² three-position PI-Spring protective earth terminal block designed for reliable grounding connections in industrial control panels, machinery and automation systems. As part of the TE Connectivity ENTRELEC SNK series, it combines fast spring-clamp wiring with a screwless rail contact for secure protective earth connections.
The ZK4-PE-3P provides three conductor connection positions on a single ground circuit, making it particularly useful where multiple protective earth conductors need to be connected within a compact DIN rail assembly. Its green and yellow polyamide housing provides immediate identification as a protective earth terminal, while the 6 mm spacing supports space-efficient panel construction.
With a rated cross-section of 4 mm², the ZK4-PE-3P accepts flexible conductors from 0.5–4 mm² and rigid stranded conductors from 0.5–6 mm². Its screwless rail contact is designed to provide reliable protective earthing independently of operator tightening, while the terminal's DIN rail format enables straightforward installation in industrial electrical cabinets.
Key Advantages
- Purpose-designed three-position protective earth terminal for industrial grounding circuits.
- PI-Spring connection technology provides fast and reliable conductor termination.
- Screwless rail contact provides a dependable protective earth connection to the DIN rail.
- Three connection positions simplify the termination of multiple earth conductors.
- Compact 6 mm terminal spacing supports high-density panel installations.
- Green and yellow housing provides clear protective earth identification.
Key Features
- TE Connectivity ENTRELEC SNK series.
- 4 mm² rated cross-section.
- Protective earth / ground terminal configuration.
- Three-position, single-circuit design.
- PI-Spring connection technology.
- Screwless protective earth rail contact.
- 480 A short-time withstand current at 1 s.
- 8000 V IEC impulse withstand voltage.
- 2200 V maximum dielectric withstand voltage.
- Compatible with TH35-7.5 and TH35-15 DIN rails.
- Green and yellow polyamide housing with UL 94V-0 flammability rating.
Reliable PI-Spring Protective Earthing for Industrial Systems
Protective earth terminal blocks such as the TE Connectivity ZK4-PE-3P provide a dedicated connection between protective conductors and the DIN rail within an electrical installation. Its screwless rail contact helps create a dependable earth path without relying on operator-applied screw torque, supporting consistent grounding performance in industrial panels and machinery.
The three-position design allows several protective earth conductors to be terminated at a single compact point, while PI-Spring technology simplifies conductor installation and maintains consistent spring pressure. This combination makes the ZK4-PE-3P particularly suitable for modern control panels where reliable grounding, efficient wiring and high terminal density are important.
Typical Applications
- Industrial control panels and electrical cabinets.
- Protective earth and grounding circuits.
- PLC and industrial automation systems.
- Industrial machinery and production equipment.
- Power distribution and switchgear assemblies.
- Motor control centres and machine control systems.
- OEM equipment and industrial panel building.
