Siemens 3RA1924-1A Mechanical Interlocking Module for Reversing Contactors

The Siemens 3RA1924-1A is a mechanical interlocking module specifically designed for reversing contactor assemblies. It is intended for front-side mounting on Siemens contactor sizes S0 through S3. This component ensures that only one contactor in a reversing pair can be energized at a time, preventing short circuits and protecting the motor.

This mechanical interlock is crucial in applications requiring motor reversing functionality, such as conveyor systems, machine tools, and hoists. By mechanically preventing simultaneous engagement of both forward and reverse contactors, it significantly enhances operational safety and equipment longevity. The successor product is the SIRIUS 3RA2 series.

Stanlo Automation, a veteran-owned business, provides surplus industrial automation parts like the Siemens 3RA1924-1A. While this is a phased-out product, we can help you source necessary components. We are committed to offering quality surplus inventory to keep your automation systems running efficiently.