Terminal block Wago 221-413, 3-contact, for fine-stranded conductors 0.14–4 mm²

Wago 221-413 is a 3-contact push-wire terminal block for fine-stranded conductors with cross-sections from 0.14 to 4 mm². The compact connector uses Wago’s spring clamp technology to provide a tool-free, re-enterable connection suitable for distribution, appliance wiring and junctions in residential and light commercial electrical installations. Its transparent housing allows visual inspection of conductor insertion and contact integrity.

Advantages

The push-in spring clamp design enables quick, tool-free connections while maintaining consistent contact pressure over time. Being re-enterable, the terminal supports easy modifications and maintenance without damage to conductor strands. The compact footprint and transparent insulating body simplify installation in confined spaces and allow visual verification of correct conductor position. Materials and construction are intended to provide reliable electrical contact and secure mechanical hold for fine-stranded conductors within the specified cross-section range.

Suitable for

• Connecting and branching fine-stranded conductors in distribution boxes and junctions
• Internal wiring of household appliances and electrical equipment
• Temporary or permanent connections in lighting and small power circuits

Key specifications

• Number of poles: 3 contacts
• Conductor cross-section range: 0.14–4 mm² (fine-stranded conductors)
• Connection type: push-in spring clamp (tool-free, re-enterable)
• Insulating body: transparent for visual inspection
• Application environment: residential and light commercial electrical systems

How to use

Strip insulation from the conductor to the length recommended by Wago for this terminal type. Insert each conductor straight into the corresponding push-in port until it seats firmly against the metal contact; the spring clamp will retain the conductor without the need for screws or tools. To remove a conductor, use the manufacturer’s recommended release method (for example, insert a small screwdriver into the designated release slot) and withdraw the conductor carefully. Follow applicable electrical standards and ensure power is disconnected before making or changing connections.

Usage recommendations

Use the terminal within its specified conductor range (0.14–4 mm²) and avoid mixing solid and fine-stranded conductors in the same contact. Verify conductor insulation strip length and perform a pull test after installation. Ensure connections are made with power off and comply with local wiring regulations.