1snk506414r0000 – zs4-s-r2 [pk=50] switch block

Why Choose the TE Connectivity ZS4-S-R2 1SNK506414R0000 Disconnect Terminal Block?

The TE Connectivity ZS4-S-R2 1SNK506414R0000 is a compact grey and orange screw-clamp disconnect terminal block designed for controlled circuit isolation in industrial control panels, instrumentation systems and automation equipment. Part of the TE Connectivity ENTRELEC SNK series, it combines reliable screw-clamp conductor termination with an integrated lever disconnect for convenient commissioning, testing and maintenance.

The ZS4-S-R2 is specifically designed with the same profile as the ZS4-SF fuse terminal block. Its disconnect lever can be operated by hand, helping simplify isolation operations when disconnect and fuse terminals are installed together. The aligned profile also makes wiring alternate disconnect and fused circuits easier and more organised.

With a rated cross-section of 2.5 mm², conductor capacity up to 4 mm², an IEC rated current of 18 A and an IEC rated voltage of 400 V, the ZS4-S-R2 provides dependable connectivity for industrial control and signal circuits. Its compact 6 mm spacing and standard TH35 DIN-rail mounting support efficient, high-density terminal assemblies.

Key Advantages

• Integrated lever disconnect enables convenient circuit isolation without removing conductors.
• Disconnect lever is designed for easy hand operation.
• Profile is aligned with the ZS4-SF fuse terminal block.
• Simplifies wiring of alternating disconnect and fuse circuits.
• Accepts flexible and rigid stranded conductors up to 4 mm².
• 18 A IEC rated current and 400 V IEC rated voltage.
• Compact 6 mm terminal spacing helps maximise DIN-rail capacity.
• Supplied in a pack quantity of 50 for production and panel-building requirements.

Key Features

• TE Connectivity ENTRELEC SNK series.
• ZS4-S-R2 disconnect terminal block.
• Proven screw-clamp connection technology.
• Lever-type disconnect.
• 1 circuit, 1 level and 2 connection positions.
• Rated cross-section of 2.5 mm².
• Flexible conductor capacity of 0.22–4 mm².
• Rigid stranded conductor capacity of 0.2–4 mm².
• 10.5 mm wire stripping length.
• 6 mm product spacing.
• Grey and orange polyamide housing.
• IP20 protection rating.
• UL 94V-0 flammability-rated housing.
• Operating temperature range of -55 to +110 °C.

Convenient Lever Isolation Alongside Fuse Terminals

The ZS4-S-R2 provides an integrated lever that opens the electrical circuit directly at the terminal strip, allowing technicians to isolate circuits while leaving permanent field wiring connected. The hand-operated lever supports efficient commissioning, troubleshooting and maintenance in industrial control and instrumentation systems.

A key advantage of the ZS4-S-R2 is its profile alignment with the ZS4-SF fuse terminal block. This allows disconnect and fuse terminals to be installed next to one another in an organised arrangement, simplifying the wiring of alternating protected and disconnectable circuits while maintaining a compact 6 mm terminal pitch.

Typical Applications

• Industrial control panels and automation cabinets.
• Instrumentation and measurement circuits.
• PLC input and output wiring.
• Signal and control circuit isolation.
• Alternating fuse and disconnect terminal assemblies.
• Testing, commissioning and troubleshooting circuits.
• Process automation and marshalling cabinets.
• Machine building and OEM electrical systems.