MC4 test pin (PV-PST)

The MC4 test pin (PV-PST) is an essential tool for checking the correct assembly of MC4 connectors. With this test pin you easily check whether the contact is properly clicked into the insulation.

Why use an MC4 test pin?

When assembling MC4 connectors it is crucial that the contacts are fully and correctly clicked into place. A poorly assembled connector can lead to:

• Increased resistance
• Heat build-up
• Power loss
• Faults or even fire hazard

With this test pin you prevent that risk by carrying out a quick and reliable check.

How it works

The test pin is used to check whether the contact is correctly locked in the connector housing. :contentReference[oaicite:0]{index=0}

• Place the test pin in the MC4 connector
• Check whether the contact is properly secured
• In the event of incorrect assembly, the contact can be corrected immediately

Application

• Installation of solar panels
• Assembling MC4 connectors
• Quality control on handover
• Service and maintenance

Compatibility

Suitable for standard MC4 connectors from Stäubli (Multi-Contact).

Why this tool is indispensable

An MC4 connector may look simple, but assembly errors occur regularly. With the MC4 test pin you add a quick quality check to every installation, without additional measuring equipment or complex operations.

Installation tip: use the test pin as standard with every assembly of MC4 connectors, so that you prevent assembly errors straight away instead of having to solve them afterwards.