SQUARE D Interlock Attachment: Interlock Attachment

The Square D QO2DTI interlock attachment is used to mechanically interlock two Square D QO or QOB miniature circuit breakers, preventing both from being in the ON position simultaneously. This is common in generator transfer or dual-power-source applications where only one source should feed the load at a time.

The Square D QO2DTI is a steel interlock attachment for Square D QO and QOB miniature circuit breakers. It includes one steel component and is classified as an interlock accessory. The manufacturer part number is QO2DTI. It is designed for circuit breaker locking applications to ensure safe power-source selection.

3G Electric supplies the Square D QO2DTI interlock attachment worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source genuine Square D accessories for industrial and commercial applications.

To install the Square D QO2DTI interlock attachment, first ensure both QO or QOB circuit breakers are in the OFF position. Mount the steel interlock bracket between the two breakers according to the manufacturer's instructions. The interlock mechanically prevents both breakers from being ON at the same time. Always follow local electrical codes and consult a qualified electrician.