Siemens Auxiliary switch on the front, 1 NO + 3 NC Part number 3RH2911-1HA13

Auxiliary Switch

The 3RH29 auxiliary switch is designed for the expansion of auxiliary contacts in the control circuit for contactors and relay systems.

Technical details:

• Type: Auxiliary switch
• Mounting: Front-mounted
• Contacts: 1 NO + 3 NC
• Current path: 1 NC, 1 NC, 1 NC, 1 NO
• Terminal type: Screw terminal
• Compatible with: Contactors 3RT2 and contactor relays 3RH2
• Installation: Tool-free
• Versions: Front or lateral mounting
• Contact configurations: Up to four instantaneous contacts or up to two leading NO and NC contacts
• Contact type: Positively driven contacts in 3RH contactor relays or mirror contacts in 3RT power contactors
• Available terminal types: Screw terminal and spring-type terminal

Customer benefits:

• Simple and efficient installation
• Always up to date with SIRIUS modular system