A303030-A – Yarn Break Sensor

The yarn break sensor is a contact device used to detect a broken yarn or wire. Integrating the sensors into the machine control circuit can provide an immediate alert and so reduce wastage and downtime.

Click on the magnifying glass to view an enlarged drawing.


All our single-end sensors feature a feeler-arm which touches the yarn / wire and switches an integrated microswitch when a break occurs. Should only be wired into a low-voltage (max 24v) circuit; the 3-terminal microswitch can be wired as N/O or N/C.

Entry and Exit Guide Options for Yarn Break Sensors

For this model, a tube can also be added to the sensing arm.

A303030-A - Yarn Break Sensor photo and detailed drawing