ZS4-BK – 4mm SCREW TERMINAL BLACK

Why Choose the TE Connectivity ZS4-BK 1SNK505066R0000 Terminal Block?

The TE Connectivity ENTRELEC ZS4-BK 1SNK505066R0000 is a 4 mm² screw clamp feed-through terminal block designed for reliable conductor connection in industrial electrical panels, control cabinets and distribution systems. Part of the ENTRELEC SNK Series, this version has a black polyamide housing, two connection positions and a compact 5.2 mm pitch.

The ZS4-BK uses proven screw clamp connection technology and accepts flexible conductors from 0.22 to 4 mm² and rigid stranded conductors from 0.2 to 4 mm². It mounts directly onto TH35-7.5 or TH35-15 DIN rail, making it suitable for organised terminal assemblies where secure, serviceable connections and efficient use of panel space are required.

Rated at 32 A and 1000 V to IEC and 20 A and 600 V to UL/CSA, the terminal block supports demanding industrial circuits while maintaining a compact footprint. Its polyamide housing carries a UL 94V-0 flammability rating, the terminal has an IP20 protection rating, and its specified operating temperature range extends from -55 to +110 °C.

Key Advantages

• 4 mm² feed-through terminal for general industrial wiring applications.
• Reliable screw clamp connection for secure conductor termination.
• 32 A / 1000 V IEC rating for demanding electrical circuits.
• Compact 5.2 mm pitch supports space-efficient terminal assemblies.
• Mounts on standard TH35-7.5 and TH35-15 DIN rails.
• Black housing enables easy colour differentiation within terminal assemblies.
• Wide -55 to +110 °C operating temperature range.
• UL 94V-0 polyamide housing for industrial electrical installations.

Key Features

• TE Connectivity / ENTRELEC ZS4-BK terminal block.
• SNK Series modular terminal block design.
• Feed-through block function.
• Screw clamp termination technology.
• 2 positions, 1 circuit and 1 level.
• Black primary product colour.
• 5.2 mm terminal pitch.
• 32 A IEC current rating.
• 1000 V IEC voltage rating.
• IP20 ingress protection rating.
• 10.5 mm wire stripping length.
• 8.8 g product weight.

Reliable Screw Connections for Industrial Control Panels

Feed-through terminal blocks provide an organised method of joining conductors through electrical control and distribution assemblies. The TE Connectivity ZS4-BK combines a compact 5.2 mm pitch with screw clamp technology, allowing conductors to be securely terminated while keeping connections accessible for inspection, testing and maintenance.

With a 32 A IEC current rating, 1000 V IEC voltage rating and conductor capacity up to 4 mm², the ZS4-BK is suitable for a broad range of industrial wiring duties. Its black housing also provides a practical means of visually differentiating designated circuits or terminal groups within densely populated control cabinets.

Typical Applications

• Industrial electrical control panels.
• Machine control and automation cabinets.
• PLC and process control systems.
• Feed-through conductor connections.
• Switchgear and distribution assemblies.
• Instrumentation and control wiring.
• DIN rail terminal assemblies.
• Industrial machinery and equipment wiring.