When do lever wire connectors make sense?
Lever wire connectors join conductors without tools and can be reopened. This guide shows when the lever type beats push-in and screw terminals, and how to pick the connector by conductor type and cross-section.
View wire connectorsWhen is the lever type worth it?
Lever wire connectors pay off when a joint is opened and closed repeatedly or when different conductor types are mixed. The lever opens the spring contact so that even fine-stranded flexible wire can be clamped safely without a ferrule - a clear edge over plain push-in connectors.
For permanent joints with only rigid conductors of the same size, a push-in connector is often cheaper and more compact. But as soon as flexible conductors, test work or frequent changes come into play, the lever type shows its strength.
- Mixed installations of rigid and flexible conductors.
- Joints that are reopened for testing or maintenance.
- Fine-stranded flexible wire clamped safely without a ferrule.
- Vibration-loaded applications with no screw re-tightening.
- Fast wiring in electrical installation and control cabinets.
How do I pick the connector by conductor and cross-section?
Two figures decide the right type: the conductor kind (rigid, flexible, fine-stranded) and the cross-section in mm². Universal lever connectors take roughly 0.08 to 4 mm², heavy-duty ranges up to 6 mm². Always check the range printed on the connector.
- Rated voltage usually 400 V, rated current up to 32 A by cross-section (6 mm² up to 41 A).
- Choose 2 to 5 clamping points depending on the task.
- Use fine-stranded wire without a ferrule only in connectors approved for it.
- Data on the housing and datasheet override rules of thumb.
What matters for installation and safety?
A safe joint only forms with a cleanly stripped, undamaged conductor and a fully closed lever. After clamping, give the wire a short tug (pull test) to check the hold. The transparent housing area on many connectors lets you verify the conductor is inserted deep enough.
Watch the permitted mix of cross-sections in a multi-way connector and never exceed the stated rated current. In fixed installations, local wiring rules add requirements for accessibility and marking of the joint.
Frequently asked questions
Can I mix rigid and flexible conductors in one connector?
Yes, universal lever connectors are designed for it. Each clamping point takes one conductor, rigid or flexible, within the stated cross-section range.
Do stranded wires need a ferrule?
With lever connectors usually not: the lever opens the contact so fine-stranded wire clamps directly. Push-in connectors often do require a ferrule.
What cross-section and current do they handle?
Universal types take about 0.08 to 4 mm², heavy-duty ranges up to 6 mm². Rated current reaches up to 32 A by cross-section, and up to 41 A at 6 mm².
Are lever connectors reusable?
Yes, that is their main advantage. The lever opens and closes repeatedly without loss of clamping force or contact reliability.
Looking for the right wire connectors?
We supply lever, push-in and rail terminals for rigid and flexible conductors from 0.08 to 6 mm² - tested to IEC 60998.
Standard-tested
Connectors to IEC 60998-2-2 for safe joints.
Tool-free
Open and close the lever without a screwdriver.
Every conductor
Rigid, flexible and fine-stranded from 0.08 to 6 mm².
Expert advice
Our specialists help you choose the type.