Why Choose the TE Connectivity ZK16 PI-Spring Feed-Through Terminal Block?
The TE Connectivity ZK16 (1SNK712010R0000) is a high-capacity PI-Spring feed-through terminal block designed for reliable power distribution and conductor termination in industrial control panels, machinery and electrical installations. Part of the TE Connectivity ENTRELEC SNK series, it combines fast spring connection technology with a robust DIN rail mounting format for efficient and dependable panel wiring.
The ZK16 provides two connection positions on one level and one electrical circuit. Its PI-Spring connection system enables efficient conductor installation while maintaining consistent spring pressure for dependable electrical contact. The screwless termination principle reduces installation effort and eliminates the routine retightening associated with conventional screw-clamp terminals.
With a 16 mm² nominal terminal size, 76 A IEC rated current and 1000 V IEC voltage rating, the ZK16 delivers high electrical performance within a compact 12 mm-wide terminal profile. It accommodates flexible conductors up to 16 mm² and rigid stranded conductors up to 25 mm², making it particularly suitable for higher-current industrial power and distribution circuits.
Key Advantages
- High-capacity 16 mm² PI-Spring feed-through terminal block for industrial wiring.
- 76 A IEC current rating supports demanding power distribution applications.
- 1000 V IEC voltage rating for industrial power and control systems.
- PI-Spring connection technology provides fast and secure conductor termination.
- Accepts flexible conductors up to 16 mm² and rigid stranded conductors up to 25 mm².
- Compact 12 mm terminal spacing helps optimise DIN rail installation space.
- Spring-pressure connections eliminate routine screw-terminal retightening.
- Grey polyamide housing provides a standard colour for general-purpose feed-through circuits.
Key Features
- TE Connectivity ENTRELEC SNK ZK series.
- ZK16 PI-Spring terminal block.
- Feed-through terminal function.
- 2 connection positions.
- 1 circuit and 1 level.
- 16 mm² nominal terminal size.
- 76 A IEC rated current.
- 75 A UL / CSA rated current.
- 1000 V IEC voltage rating.
- 600 V UL / CSA operating voltage rating.
- 1920 A short-time withstand current for 1 s.
- Flexible conductor capacity from 0.5–16 mm².
- Rigid stranded conductor capacity from 0.5–25 mm².
- 12 mm product spacing.
- DIN rail mounting on TH35-7.5 and TH35-15 rails.
- Wide operating temperature range from -55 to +110 °C.
High-Current PI-Spring Connections for Industrial Wiring
PI-Spring terminal technology combines rapid conductor installation with reliable spring-force contact pressure. The spring connection maintains consistent pressure on the installed conductor without depending on screw torque, helping provide dependable electrical continuity while reducing installation and maintenance requirements.
The ZK16 is particularly suited to higher-current circuits where larger conductor sizes are required. Its ability to accommodate flexible conductors up to 16 mm² and rigid stranded conductors up to 25 mm², combined with a 76 A IEC current rating, makes it a practical solution for power distribution, machinery and industrial control-panel applications.
Typical Applications
- Industrial control panels and switchgear assemblies.
- Higher-current power distribution circuits.
- Machine building and OEM electrical systems.
- Industrial automation and control cabinets.
- Manufacturing and process equipment.
- DIN rail mounted electrical distribution assemblies.
