Siemens SENTRON 5ST3805-1 handle coupler is a compact accessory for residual current miniature circuit breakers with a 70 mm diameter, enabling mounting of additional components on SENTRON devices. It is sold as one set containing five units in a poly bag. Each unit has a net weight of about 5.3 g. This handle coupler provides a secure mounting interface for optional components on SENTRON residual current protection devices, supporting modular installations and easy retrofits in electrical panels.
