3RH2911-1FA22
The Siemens SIRIUS 3RH2911-1FA22 is a 4-pole front-mounted auxiliary switch with 2 normally open and 2 normally closed contacts (2 NO + 2 NC), for a total of 4 sets of contacts. The current path is NO, NC, NC, NO in sequence. It is connected by screw terminals and is suitable for front mounting of 3RT2 contactors and 3RH2 contact relays.
Product Positioning
The 3RH2911-1FA22 is a SIRIUS 3RH29 front-mounted 4-pole auxiliary switch, which provides four sets of two normally open and two normally closed contacts at once. It is suitable for motor control and automation equipment control panels that require a lot of interlocking and feedback signals.
Core Product Advantages and Features
4-pole contact primary expansion
A single module provides 4 sets of contacts: 2 normally open and 2 normally closed, reducing the number of parts and installation time.
Front-mounted snap-fit installation
It snaps directly onto the front of the contactor, requiring no additional fasteners, making maintenance and replacement convenient.
Applicable to 3RT2 and 3RH2
It can be used with SIRIUS 3RT2 contactors and 3RH2 contact relays, and has high spare parts versatility.
Screw terminal connection
The screw terminals provide a secure connection, making them suitable for general control panel wiring and on-site maintenance practices.