3RH2911-1AA10
The Siemens SIRIUS 3RH2911-1AA10 is a single-pole front-mounted auxiliary switch with one normally open (1 NO) contact, terminal markings 73/74, top-entry wiring, screw terminal connection, and can be snapped onto the front of the 3RT2 contactor and 3RH2 contact relay to expand single-point control signals.
Product Positioning
The 3RH2911-1AA10 is a SIRIUS 3RH29 single-pole auxiliary switch. It can be installed independently when only a normally open signal needs to be added. The top-entry design makes it easy to select according to the wiring direction inside the panel, and it is suitable for flexible expansion of small control circuits.
Core Product Advantages and Features
Unipolar elastic expansion
A single normally open contact module can be added point by point as needed, eliminating the need to purchase a complete set of multi-pole auxiliary switches.
Top cable entry design
The wires are introduced into the terminals from above, and the placement of the wire trough can shorten the wiring and keep the panel tidy.
Front-mounted snap-fit installation
It snaps directly onto the front of the 3RT2 contactor or 3RH2 contact relay for quick, tool-free installation.
Screw terminal secure
The screw terminals can connect to 0.5 to 2.5 mm² wires, making them suitable for vibration environments and traditional wiring practices.