2-pole connector Wago 221-612 for fine-stranded conductors 0.14–6 mm²

Wago 221-612 is a 2-pole universal connector engineered for fine-stranded conductors with cross-sections from 0.14 to 6 mm². The compact push-in connector enables tool-free insertion and provides a secure spring-clamp contact that maintains reliable electrical continuity during extension, repair and routine household wiring tasks. The transparent housing allows visual inspection of conductor insertion, while the compact two-conductor format supports space-saving use in junction boxes and small enclosures.

Advantages

The connector offers tool-free push-in termination and a maintenance-free spring clamp that holds both solid and ferruled fine-stranded conductors without screwing. Its transparent housing facilitates quick visual checks of conductor position and contact integrity. The product supports a wide conductor cross-section range, reducing the need to carry multiple connector sizes and speeding up common installation workflows.

Suitable for

• Domestic lighting and power circuit extensions
• Repair and rework of existing wiring
• Connecting fine-stranded conductors with ferrules
• Temporary connections during testing or commissioning

Key specifications

• Number of poles: 2
• Conductor cross-section range: 0.14–6 mm²
• Suitable conductor types: fine-stranded (including ferruled) and solid conductors
• Termination method: push-in spring clamp (tool-free)
• Housing material: transparent insulating plastic for visual inspection
• Typical application: low-voltage building electrical installations and repairs

How to use

Prepare conductors by stripping insulation to the recommended length for the connector, ensuring exposed conductor strands are neat and, if applicable, use ferrules on fine-stranded wires. Insert each conductor into the corresponding opening until it seats firmly against the spring clamp; the push-in mechanism secures the conductor without additional tools. Verify the connection visually through the transparent housing and by a gentle pull test. To remove a conductor, follow the manufacturer's procedure which may require depressing the clamp release or using a small release tool where provided.

Usage recommendations

Use this connector within its specified conductor cross-section range and only for low-voltage building electrical circuits. Ensure conductors are correctly stripped and, for fine-stranded wires, apply ferrules if required by local regulations or installation practice. Do not overload beyond rated current for the circuit and avoid using the connector in exposed outdoor locations unless installed within appropriate enclosures.