221 Series Lever Nut Wire Connectors Wago

The Wago 221 Series Lever Nut Wire Connectors represent the industry-leading standard in tool-free electrical connection technology, offering fast, reliable, and reusable wire splicing for professional electrical installations and DIY projects. Manufactured by Wago, the original inventor of the lever connector, these compact terminal blocks feature the patented orange lever mechanism that enables secure connections of solid, stranded, and flexible conductors without any tools or special training.

Each Wago 221 connector accepts all conductor types by simply lifting the orange operating lever, inserting the stripped wire into the clamping unit, and releasing the lever to create a gas-tight, maintenance-free connection. The transparent housing provides clear visual confirmation of proper wire insertion, while the CAGE CLAMP® spring pressure terminal technology ensures permanent, vibration-proof connections that won’t loosen over time. Unlike cheaper imitations, genuine Wago connectors undergo rigorous quality testing and carry comprehensive international certifications.

The 221 series design allows conductors of different cross-sections to be connected within a single connector, accommodating wire sizes from 0.14mm² to 4mm² (AWG 28-12) in the same terminal. This flexibility eliminates the need to stock multiple connector types and simplifies field installations. The compact, slim-line design saves valuable space in crowded junction boxes and electrical panels. Widely used in residential lighting circuits, commercial electrical installations, industrial control panels, renewable energy systems, and HVAC installations where reliable, inspectable, and easily modifiable connections are essential.

Specification :

• Brand: Wago
• Series: 221 Compact Lever Connectors
• Available Variants: 221-412 (2-port), 221-413 (3-port), 221-415 (5-port)
• Connection Technology: Spring pressure terminal
• Conductor Type: Solid, stranded, and flexible (all types)
• Wire Gauge Range: 0.14mm² – 4.0mm² (AWG 28-12)
• Fine Stranded Range: 0.14mm² – 4.0mm² (with ferrule)
• Stripped Length: 10mm – 11mm recommended
• Rated Voltage: 450V AC (per IEC) / 600V (per UL)
• Rated Current: 32A per terminal (depends on cross-section)
• Housing Material: Transparent polycarbonate with orange polypropylene levers
• Contact Material: Electrolytic copper with tin plating
• Installation: Tool-free lever operation
• Reusability: Unlimited connect/disconnect cycles