1snk505316r0000 – zs4-d2-s-t2 screw double deck – grey

Why Choose the TE Connectivity ZS4-D2-S-T2 1SNK505316R0000 Double-Deck Disconnect Terminal Block?

The TE Connectivity ZS4-D2-S-T2 1SNK505316R0000 is a compact double-deck screw-clamp terminal block with feed-through and disconnect functions, designed for high-density industrial control, instrumentation and automation wiring. Part of the TE Connectivity ENTRELEC SNK series, it combines one disconnect circuit with one feed-through circuit in a space-efficient DIN-rail terminal.

A key feature of the ZS4-D2-S-T2 is its two built-in test socket screws, which provide convenient test access during commissioning, troubleshooting and maintenance. Together with the integrated blade disconnect, these test points allow technicians to perform signal testing and circuit isolation without unnecessarily disturbing permanent field wiring.

The terminal provides four connection positions across two levels within a narrow 5.2 mm pitch. It accommodates conductors up to 4 mm² and carries an IEC rating of 25 A at 630 V, making it particularly suitable for compact control and measurement circuits where dependable termination, testing and isolation are required.

Key Advantages

• Compact double-deck design saves valuable DIN-rail space.
• Combines one disconnect circuit and one feed-through circuit in a single terminal.
• Integrated two test socket screws simplify signal testing and commissioning.
• Blade disconnect provides convenient circuit isolation for testing and maintenance.
• Supports conductors up to 4 mm².
• 25 A IEC current rating and 630 V IEC voltage rating.
• Only 5.2 mm pitch for efficient high-density terminal assemblies.
• Reliable screw-clamp technology provides secure and serviceable conductor connections.

Key Features

• TE Connectivity ENTRELEC SNK series.
• ZS4-D2-S-T2 double-deck disconnect terminal block.
• Feed-through and disconnect block function.
• One disconnect circuit with 2 built-in test socket screws.
• One integrated feed-through circuit.
• Blade-type disconnect mechanism.
• Screw-clamp connection technology.
• 2 levels and 4 connection positions.
• Conductor capacity up to 4 mm².
• 5.2 mm terminal spacing.
• Grey polyamide housing.
• IP20 ingress protection.
• UL 94V-0 flammability-rated housing material.
• Operating temperature range of -55 to +110 °C.

Efficient Circuit Testing and Isolation in a Compact Terminal

The ZS4-D2-S-T2 is designed for applications where circuit density and convenient test access are both important. Its double-deck construction combines a disconnect circuit and feed-through circuit within a 5.2 mm footprint, allowing panel builders to accommodate more wiring functions on the available DIN rail.

Two integrated test socket screws distinguish the ZS4-D2-S-T2 from a standard double-deck disconnect terminal. They provide accessible points for signal testing during commissioning and maintenance, while the blade disconnect enables controlled circuit isolation without removing the permanently connected conductors.

Typical Applications

• Industrial control panels and automation cabinets.
• Instrumentation and measurement circuits.
• PLC input and output wiring.
• Signal testing and commissioning circuits.
• Control circuit isolation and troubleshooting.
• Process control and factory automation equipment.
• Machine building and OEM electrical systems.
• High-density DIN-rail terminal assemblies.