Terminal connector (rail) Eti-Polam VS 4 PA+ red — threaded 4 mm²

Eti-Polam VS 4 PA+ red is a threaded rail terminal connector designed for secure screw-clamp connections of single or stranded conductors up to 4 mm². The compact, color-coded red housing is built for mounting on distribution rails and provides consistent electrical contact in residential and industrial panels, junctions and control cabinets where clear phase or circuit identification is required.

Advantages

The connector offers a threaded screw-clamp contact that ensures reliable mechanical and electrical connection for 4 mm² conductors. Its compact profile allows efficient use of rail space while the red color simplifies identification and wiring organization. The product is compatible with standard DIN-style distribution rails and is manufactured to provide stable contact pressure over repeated insertions and removals.

Suitable for

• Connecting single-core or stranded copper conductors up to 4 mm² on DIN rail systems
• Color-coded phase or circuit identification in distribution boards and control cabinets
• Wiring tasks in residential, commercial and light industrial electrical installations
• Terminal assemblies and junction blocks where compact threaded connections are required

When it may not be suitable

This terminal connector is designed for conductors with cross-sections up to 4 mm²; it is not suitable for larger gauge cables or busbars that require higher current capacity. It is intended for standard screw-clamp terminations on distribution rails and may not be appropriate for insulation-displacement systems, specialized high-vibration environments without additional securing measures, or for applications requiring integrated fusing or surge protection.

Key specifications

• Conductor capacity: up to 4 mm² (single or stranded conductors)
• Connection type: threaded screw-clamp contact
• Mounting: rail-mounted for standard distribution rails
• Housing color: red for circuit or phase identification
• Form factor: compact terminal for space-efficient rail installation

How to use

Mount the connector on the distribution rail until it locks into position. Strip the conductor to the recommended length for secure contact, insert the conductor into the terminal entry and tighten the screw to the appropriate torque specified for screw-clamp terminals. Verify the mechanical tightness and electrical continuity after installation and, if required, label the terminal according to circuit identification standards. For repeated maintenance, loosen the screw fully before removing the conductor to avoid conductor damage.

What to consider before purchase

• Confirm conductor cross-section does not exceed 4 mm² and that wire type (solid or stranded) is compatible
• Ensure the distribution rail type and dimensions are compatible with the terminal mounting method
• Check required tightening torque and whether insulating sleeves or markers are needed for your installation

Usage recommendations

Use a properly calibrated screwdriver and follow recommended torque values for screw-clamp terminals to ensure reliable contact. For installations subject to vibration, consider additional securing methods or periodic retorque checks. Maintain clear labeling and color-coding on the rail to simplify future maintenance and reduce wiring errors.