1snk506313r0000 – 4mm disconnect terminal grey [pk=50]

Why Choose the TE Connectivity ZS4-SP-R1 1SNK506313R0000 Disconnect Terminal Block?

The TE Connectivity ZS4-SP-R1 1SNK506313R0000 is a grey 4 mm² screw clamp disconnect terminal block designed for circuit isolation, testing and organised conductor termination in industrial electrical panels. Part of the TE Connectivity ENTRELEC SNK Series, this specialised terminal combines secure screw clamp connections with a removable disconnect component system for flexible control and measurement circuit design.

The ZS4-SP-R1 provides a single circuit across two positions and has a compact 6 mm pitch. Its disconnect configuration allows the electrical path to be opened without removing the field conductors, helping simplify commissioning, fault-finding and maintenance. The corresponding disconnect plug is supplied separately, allowing the terminal assembly to be configured for the required application.

With an IEC rated current of 18 A and an IEC rated voltage of 400 V, the ZS4-SP-R1 is suitable for industrial control and signal circuits. It accepts single flexible conductors from 0.22–4 mm² and rigid stranded conductors from 0.2–4 mm², while its polyamide housing, IP20 protection and DIN rail mounting provide a robust solution for professional panel building.

Key Advantages

• Specialised 4 mm² disconnect terminal block for industrial circuit isolation.
• Disconnect design enables circuits to be opened without removing connected conductors.
• 18 A IEC current rating for control, signal and measurement circuits.
• 400 V IEC voltage rating for industrial electrical applications.
• Accepts flexible and rigid stranded conductors up to 4 mm².
• Compact 6 mm pitch supports high-density DIN rail installations.
• Two aligned jumper channels support efficient integration with compatible SNK terminal assemblies.

Key Features

• TE Connectivity ENTRELEC SNK Series.
• ZS4-SP-R1 screw clamp disconnect terminal block.
• 4 mm² conductor class.
• Disconnect configuration with plug supplied separately.
• Single-level, two-position, one-circuit design.
• 18 A IEC rated current.
• 400 V IEC rated voltage.
• 20 A UL rated current.
• 150 V UL / CSA maximum main-circuit operating voltage.
• 6 mm product spacing.
• Grey polyamide housing.
• IP20 protection rating.
• UL 94V-0 flammability rating.
• Compatible with TH35-7.5 and TH35-15 DIN rails.
• Supplied in a pack quantity of 50.

Reliable Circuit Isolation for Industrial Control Systems

Disconnect terminal blocks allow individual electrical circuits to be isolated while leaving field conductors securely terminated. The TE Connectivity ZS4-SP-R1 uses screw clamp technology for dependable conductor retention and incorporates a disconnect interface that accepts a compatible removable plug, providing a practical method of opening or reconnecting the circuit during testing, commissioning and maintenance.

The compact 6 mm terminal spacing and aligned jumper channels help the ZS4-SP-R1 integrate efficiently alongside compatible SNK Series feed-through and disconnect terminals. This makes it particularly useful in control, instrumentation and automation panels where circuit accessibility, organised wiring and efficient use of DIN rail space are important.

Typical Applications

• Industrial control panels and automation cabinets.
• Instrumentation and measurement circuits.
• PLC input and output wiring.
• Process control and monitoring equipment.
• Circuit isolation for commissioning and maintenance.
• Electrical testing and troubleshooting systems.
• Machine building and OEM electrical equipment.