1snk705220r0000 – zk2.5-d2-bl pi-spring double deck – blue

Why Choose the TE Connectivity ZK2.5-D2-BL PI-Spring Double Deck Terminal Block?

The TE Connectivity ZK2.5-D2-BL (1SNK705220R0000) is a compact double-deck PI-Spring feed-through terminal block designed to provide two independent electrical circuits within a space-saving DIN rail footprint. Part of the TE Connectivity ENTRELEC SNK series, it combines high-density wiring with reliable spring-clamp technology for industrial control panels, machinery and automation systems.

The double-level configuration provides two feed-through circuits and four connection positions within a terminal only 5.2 mm wide. PI-Spring connection technology enables quick conductor termination while maintaining consistent spring pressure on connected wires, helping provide secure electrical connections without routine screw tightening. Two jumper channels and generous marker areas on each deck further simplify circuit distribution and identification.

With a 2.5 mm² rated cross-section, 24 A IEC current rating and 800 V IEC voltage rating, the ZK2.5-D2-BL provides high electrical performance in a compact format. Its blue polyamide housing and compatibility with standard TH35 DIN rails make it well suited to organised, high-density industrial wiring installations.

Key Advantages

• Compact double-deck terminal design with two independent feed-through circuits.
• PI-Spring connection technology provides fast and dependable conductor termination.
• Four connection positions arranged across two levels.
• 24 A IEC current rating and 800 V IEC voltage rating.
• Only 5.2 mm wide for efficient use of DIN rail space.
• Two jumper channels support flexible circuit distribution.
• Large input and output marker zones on each deck simplify circuit identification.
• Blue housing provides clear visual differentiation within terminal assemblies.

Key Features

• TE Connectivity ENTRELEC SNK ZK series.
• Double-deck PI-Spring feed-through terminal block.
• 2 independent circuits.
• 2 levels and 4 connection positions.
• 2.5 mm² rated cross-section.
• 24 A IEC rated current.
• 800 V IEC voltage rating.
• 600 V UL / CSA operating voltage rating.
• Rigid stranded conductor capacity up to 4 mm².
• Flexible conductor capacity up to 2.5 mm².
• 5.2 mm terminal spacing.
• Blue polyamide housing.
• DIN rail mounting for TH35-7.5 and TH35-15 rails.

Space-Saving Double-Deck Connections for Industrial Wiring

Double-deck terminal blocks allow two separate electrical circuits to occupy approximately the same DIN rail width normally required by a single-level terminal. The ZK2.5-D2-BL therefore helps increase wiring density in control cabinets while retaining individual feed-through connections and convenient access to each circuit.

Its PI-Spring technology maintains reliable spring pressure on connected conductors and enables efficient wiring during panel assembly and maintenance. Combined with two jumper channels and dedicated marker areas on both decks, the ZK2.5-D2-BL provides a flexible solution for high-density signal, control and power distribution wiring.

Typical Applications

• Industrial control panels and switchgear assemblies.
• PLC and automation cabinets.
• High-density control and signal wiring.
• Machine building and OEM electrical systems.
• Power and control circuit distribution.
• Manufacturing and process automation equipment.