1snk505315r0000 – zs4-d2-s screw double deck – grey

Why Choose the TE Connectivity ZS4-D2-S 1SNK505315R0000 Double-Deck Terminal Block?

The TE Connectivity ZS4-D2-S 1SNK505315R0000 is a compact double-deck screw-clamp terminal block with feed-through and disconnect functions, designed for space-efficient industrial control-panel wiring. Part of the TE Connectivity ENTRELEC SNK series, it combines two circuit functions within a narrow terminal profile, helping reduce DIN-rail space requirements in densely populated electrical cabinets.

The ZS4-D2-S features two levels and four connection positions, with a feed-through circuit and a blade-disconnect circuit incorporated into one terminal block. This configuration enables a complete circuit to be connected within only 5.2 mm of terminal spacing while retaining convenient access for wiring, testing, isolation and maintenance.

With a rated cross-section of 4 mm², an IEC current rating of 25 A and an IEC voltage rating of 630 V, the ZS4-D2-S is suitable for industrial control, instrumentation and distribution applications. Its grey polyamide housing, screw-clamp connections and standard TH35 DIN-rail mounting make it a practical choice for professional panel building and machine wiring.

Key Advantages

• Space-saving double-deck terminal block combines two circuit functions in one unit.
• Integrated feed-through and blade-disconnect functions simplify circuit wiring and isolation.
• 4 mm² rated cross-section for industrial power, control and instrumentation wiring.
• 25 A IEC current rating and 630 V IEC voltage rating.
• Only 5.2 mm spacing helps maximise available DIN-rail capacity.
• Four connection positions arranged across two terminal levels.
• Reliable screw-clamp technology provides secure conductor termination.
• Compatible with standard TH35-7.5 and TH35-15 DIN rails.

Key Features

• TE Connectivity ENTRELEC SNK series.
• ZS4-D2-S double-deck terminal block.
• Combined feed-through and disconnect circuit functionality.
• Blade-type disconnect mechanism.
• Proven screw-clamp connection technology.
• 2 levels and 4 connection positions.
• 4 mm² rated cross-section.
• 5.2 mm product spacing for high-density installations.
• Grey polyamide housing.
• Compatible with standard SNK-series marking, jumper and end-section systems.
• UL 94V-0 flammability-rated housing.
• Wide -55 to +110 °C operating temperature range.

Space-Saving Double-Deck Connectivity and Circuit Isolation

Double-deck terminal blocks allow multiple electrical circuits to be accommodated within the footprint normally required by a single-level terminal arrangement. The ZS4-D2-S takes this concept further by combining a disconnect circuit and feed-through return circuit in a terminal only 5.2 mm wide, making efficient use of valuable DIN-rail space.

The integrated blade disconnect provides a convenient means of isolating a circuit for testing, commissioning or maintenance without removing the connected conductors. Its screw-clamp connections provide secure and serviceable conductor termination, while the common profile with compatible SNK double-deck terminals helps simplify marking, jumpering and terminal-strip assembly.

Typical Applications

• Industrial control panels and automation cabinets.
• Instrumentation and measurement circuits.
• PLC input and output wiring.
• Control and signal circuit isolation.
• Machine building and OEM electrical systems.
• Electrical distribution and switchgear assemblies.
• Process automation and control equipment.
• High-density DIN-rail terminal strips.