1snk505311r0000 – zs4-s-t2 [pk=50] switch terminal block

Why Choose the TE Connectivity ENTRELEC ZS4-S-T2 1SNK505311R0000 Switch Terminal Block?

The TE Connectivity ENTRELEC ZS4-S-T2 1SNK505311R0000 is a compact 4 mm² disconnect screw clamp terminal block designed for switching, isolation and testing functions within industrial control panels and electrical distribution systems. Part of the established ENTRELEC SNK Series, it combines two screw clamp connection positions with an integrated blade disconnect mechanism in a space-saving grey DIN rail housing.

The ZS4-S-T2 provides a convenient means of electrically disconnecting a circuit without removing its conductors, supporting commissioning, maintenance, measurement and fault-finding procedures. Its 5.2 mm pitch allows high-density terminal assemblies, while the screw clamp connection system accommodates rigid and flexible conductors up to 4 mm².

Rated at 25 A and 400 V IEC, the 1SNK505311R0000 offers an operating temperature range of -55 to 110 °C, IP20 protection and a UL 94V-0 flammability rating. The combination of DIN rail mounting, blade disconnection and screw termination makes it a practical solution for professional industrial control and testing applications.

Key Advantages

• Integrated blade disconnect function enables convenient circuit isolation.
• Supports conductor cross-sections up to 4 mm².
• Compact 5.2 mm pitch helps maximise available DIN rail space.
• Reliable screw clamp connections for industrial wiring.
• Rated at 25 A and 400 V IEC.
• Wide -55 to 110 °C operating temperature range.
• IP20 protection and UL 94V-0 flammability rating.
• Compatible with standard TH35 DIN rails.

Key Features

• TE Connectivity ENTRELEC ZS4-S-T2 disconnect terminal block.
• Screw clamp termination technology.
• Blade-type disconnect mechanism.
• 2 positions, 1 circuit and 1 level.
• Compact 5.2 mm product spacing.
• Grey polyamide housing.
• 25 A IEC current rating.
• 400 V IEC voltage rating.
• 25 A UL current rating.
• 150 V UL/CSA maximum main-circuit operating voltage.
• DIN rail mounting on TH35-7.5 and TH35-15 rails.
• 10.5 mm conductor stripping length.

Reliable Disconnect Connections for Industrial Control Panels

Disconnect terminal blocks provide an efficient way to isolate individual electrical circuits while retaining the permanent conductor connections on either side of the terminal. The TE Connectivity ENTRELEC ZS4-S-T2 incorporates a blade disconnect mechanism, allowing the electrical path to be opened when circuit isolation is required for commissioning, inspection, testing or maintenance.

With a compact 5.2 mm pitch, conductor capacity up to 4 mm² and ratings of 25 A and 400 V IEC, the 1SNK505311R0000 is well suited to organised industrial control wiring. Its screw clamp connections provide dependable conductor termination, while compatibility with standard TH35 DIN rails allows straightforward integration into SNK Series terminal assemblies.

Typical Applications

• Industrial electrical control panels.
• Control circuit isolation and switching.
• Testing, commissioning and fault-finding circuits.
• Machine building and OEM equipment.
• Automation and process control cabinets.
• Instrumentation and measurement circuits.
• DIN rail terminal assemblies.
• Industrial maintenance and troubleshooting applications.