1snk508424r0000 – zs4-d2-sf1-r3 screw double deck – grey

Why Choose the TE Connectivity ZS4-D2-SF1-R3 Double-Deck Screw Clamp Terminal Block?

The TE Connectivity ZS4-D2-SF1-R3 1SNK508424R0000 is a compact double-deck screw clamp terminal block designed to combine feed-through and fused circuit functions within a single DIN rail module. Part of the TE Connectivity ENTRELEC SNK Series, it provides two independent circuits across two levels, helping panel builders achieve high wiring density while retaining clear circuit separation.

This grey and dark grey terminal block provides four connection positions in an 8 mm pitch format. Its feed-through and fuse configuration makes it particularly suitable for control, instrumentation and signal applications where one circuit requires conventional continuity while another benefits from fuse protection.

The ZS4-D2-SF1-R3 has an IEC current rating of 6.3 A and an IEC voltage rating of 800 V. It accepts rigid stranded conductors up to 6 mm² and flexible conductors up to 4 mm², while its polyamide housing, IP20 protection and UL 94V-0 flammability rating support reliable operation in industrial electrical environments.

Key Advantages

• Combines feed-through and fuse functions within one compact terminal block.
• Double-deck design provides two independent circuits while conserving DIN rail space.
• Four connection positions simplify organised field and control wiring.
• Compact 8 mm pitch supports high-density panel layouts.
• 800 V IEC voltage rating for demanding industrial installations.
• Secure screw clamp technology provides reliable conductor retention.
• Compatible with standard TH35-7.5 and TH35-15 DIN rails.

Key Features

• TE Connectivity ENTRELEC SNK Series.
• ZS4-D2-SF1-R3 double-deck terminal block.
• Feed-through and fuse block function.
• 2 circuits.
• 2 levels.
• 4 connection positions.
• 8 mm product spacing.
• 6.3 A IEC rated current.
• 800 V IEC rated voltage.
• 12 A UL/CSA rated current.
• 300 V CSA voltage rating.
• 8,000 V IEC impulse withstand voltage.
• Grey and dark grey polyamide housing.
• IP20 protection rating.
• UL 94V-0 flammability rating.

Reliable Double-Deck Fused Connectivity

Double-deck terminal blocks increase wiring density by placing two independent circuits within a single terminal footprint. The TE Connectivity ZS4-D2-SF1-R3 extends this concept by combining a conventional feed-through circuit with a fused circuit, allowing protection and standard connectivity to be grouped together in a compact DIN rail assembly.

Its screw clamp connections provide secure mechanical conductor retention, while the two-level layout simplifies circuit organisation in control and instrumentation cabinets. The compact 8 mm width makes the terminal especially useful where panel space is limited but reliable fused protection and clear wiring segregation are required.

Typical Applications

• Industrial control panels and automation cabinets.
• Instrumentation and measurement circuits.
• Fused signal and control wiring.
• Process control systems.
• PLC and I/O marshalling cabinets.
• Machine building and factory automation.
• High-density DIN rail terminal assemblies.