Siemens 3SU1401-1BB40-3AA0 (SIRIUS) control push-button

The Siemens 3SU1401-1BB40-3AA0 is a SIRIUS series panel-mounted push-button / operator control element for industrial control and signalling applications. Its modular design allows integration with SIRIUS contact blocks and accessories (sold separately). Built for reliable manual control in machinery and automation panels, offering robust construction and long service life. Verify compatibility with existing contact blocks and mounting arrangements before installation.