Why Choose the TE Connectivity ZK2.5-D2-PE PI-Spring Double Deck Terminal Block?
The TE Connectivity 1SNK705212R0000 ZK2.5-D2-PE is a compact PI-Spring double-deck feed-through and ground terminal block designed for high-density industrial control and automation wiring. Part of the TE Connectivity ENTRELEC SNK series, it combines feed-through and protective earth functionality within a single two-level terminal block, helping reduce DIN rail space while keeping related circuits organised.
The ZK2.5-D2-PE provides four connection positions across two levels and two circuits, with one level providing a feed-through connection and the grounded level providing a protective earth connection through the DIN rail. Its compact 5.2 mm spacing makes it particularly suitable for densely populated control cabinets where signal, power and protective earth wiring need to be arranged efficiently.
The main circuit is rated at 24 A and 800 V IEC and accepts flexible conductors from 0.22–2.5 mm² and rigid stranded conductors from 0.2–4 mm² / 26–12 AWG. Its grey polyamide housing, IP20 protection, UL 94V-0 flammability rating and wide -55–110 °C operating temperature range provide a durable solution for industrial machinery, control panels and automation equipment.
Key Advantages
- Combines feed-through and protective earth functions within one compact double-deck terminal block.
- Two-level, two-circuit design increases wiring density and reduces DIN rail space requirements.
- PI-Spring connection technology enables fast and reliable conductor termination without conventional screw tightening.
- Compact 5.2 mm terminal spacing is ideal for densely populated control panels.
- 24 A, 800 V IEC main-circuit rating supports industrial power and signal wiring.
- Dedicated grounded level provides an integrated protective earth connection through the DIN rail.
Key Features
- TE Connectivity ENTRELEC SNK series.
- ZK2.5-D2-PE PI-Spring double-deck terminal block.
- Manufacturer part number 1SNK705212R0000.
- Feed-through and ground block functions.
- 4 connection positions.
- 2 circuits across 2 levels.
- Compact 5.2 mm product spacing.
- 24 A rated current at 800 V IEC.
- 20 A UL current rating.
- 300 A short-time withstand current for 1 s.
- 8000 V IEC impulse withstand voltage.
- DIN rail mounting on TH35-7.5 and TH35-15 profiles.
Compact Feed-Through and Protective Earth Wiring
Double-deck terminal blocks increase connection density by arranging circuits vertically rather than requiring additional DIN rail width. The ZK2.5-D2-PE combines two separate circuits across two levels, providing feed-through connectivity alongside a grounded level within a compact 5.2 mm footprint. This arrangement is particularly effective where control, signal and protective earth wiring need to be grouped together.
PI-Spring technology provides spring-force conductor retention for rapid installation and consistent electrical contact. Combined with the integrated grounded level, the ZK2.5-D2-PE offers an efficient solution for industrial panel builders seeking to reduce wiring space while maintaining clearly organised feed-through and protective earth connections.
Typical Applications
- Industrial electrical control panels.
- Combined feed-through and protective earth wiring.
- PLC and automation system installations.
- High-density double-deck DIN rail assemblies.
- Machine building and OEM electrical systems.
- Process control and instrumentation panels.
- Industrial machinery and equipment cabinets.
- Power, signal and protective earth distribution.
