Why Choose the TE Connectivity ZK2.5-3P-RD 1SNK705069R0000 Red PI-Spring Feed-Through Terminal Block?
The TE Connectivity ZK2.5-3P-RD 1SNK705069R0000 is a compact three-position PI-Spring feed-through terminal block from the ENTRELEC SNK series, designed for fast and reliable conductor connections in industrial control panels, machinery, automation systems and electrical distribution equipment. Its red polyamide housing provides clear visual identification within organised terminal assemblies.
The ZK2.5-3P-RD provides three connection positions, one circuit and one level within a narrow 5.2 mm terminal spacing. The three positions are electrically connected through the same feed-through circuit, making the terminal particularly useful for branching or distributing a common potential or signal between multiple conductors.
With IEC ratings of 24 A and 1000 V, an 8000 V impulse withstand voltage and a 300 A short-time withstand current at 1 s, the ZK2.5-3P-RD combines compact dimensions with strong electrical performance. It accepts flexible conductors from 0.22–2.5 mm² and rigid stranded conductors from 0.2–4 mm².
Key Advantages
- Three connection positions provide convenient conductor branching and potential distribution.
- PI-Spring connection technology supports fast, secure and maintenance-friendly wiring.
- Compact 5.2 mm terminal spacing maximises available DIN rail space.
- 24 A IEC current rating supports industrial power and signal circuits.
- 1000 V IEC voltage rating provides high electrical capability in a compact terminal.
- Accepts flexible conductors from 0.22–2.5 mm² and rigid stranded conductors up to 4 mm².
- Red housing enables clear circuit identification and colour-coded wiring.
- Compatible with standard TH35-7.5 and TH35-15 DIN rails.
Key Features
- TE Connectivity ENTRELEC SNK series.
- ZK2.5-3P-RD PI-Spring feed-through terminal block.
- Three connection positions.
- One circuit and one level.
- PI-Spring / spring clamp connection technology.
- 24 A IEC current rating.
- 20 A UL and CSA current ratings.
- 1000 V IEC voltage rating.
- 600 V UL and CSA maximum operating voltage.
- 8000 V IEC impulse withstand voltage.
- 300 A short-time withstand current at 1 s.
- 5.2 mm product spacing.
- Red polyamide insulating housing.
- IP20 protection.
- UL 94V-0 flammability rating.
Three-Position PI-Spring Connections for Efficient Circuit Distribution
The ZK2.5-3P-RD combines three conductor connection positions within a single electrical circuit. This configuration allows an incoming conductor to be connected to two outgoing conductors or enables three conductors to share the same electrical potential, reducing the need for separate distribution terminals in suitable circuits.
TE Connectivity's PI-Spring connection system provides spring-loaded conductor retention in a compact terminal format. With only 5.2 mm of DIN rail width required, the ZK2.5-3P-RD is particularly useful in densely populated control cabinets where wiring efficiency, connection density and clear circuit identification are important. The red housing also allows the terminal to be readily distinguished from standard grey terminal groups.
Typical Applications
- Three-conductor feed-through and branching connections.
- Potential and signal distribution circuits.
- Colour-coded industrial control panel wiring.
- PLC and automation system connections.
- Machine control and production equipment.
- Instrumentation and process-control circuits.
- Building automation and electrical cabinets.
- OEM machinery and compact DIN rail assemblies.
