Secured breaking: SIRCO M transfer switches include contact point technology and double break per pole as standard, enabling safe, optimal operation of LV electrical circuits. Modular device: Thanks to their modular format, SIRCO M transfer switches can be fixed to a DIN rail, a backplate or a modular panel. Improved on-load switching: The SIRCO M switch comprises two mechanically interlocked load break switches. Its AC23 characteristics enable it to perform on-load changeover switching.