Siemens First lateral auxiliary switch for 3RT1, 2NO, screw terminal Part number 3RH1921-1EA20

First lateral auxiliary switch

This product serves to expand auxiliary contacts in the control circuit for SIRIUS contactors.

Technical details:

• 2 NO contacts
• Screw terminal
• Compatible with contactors 3RT1 SIRIUS
• Can be fitted to 3RT1 contactors of sizes S0 - S12 without tools
• Available for front or lateral mounting
• Up to four instantaneous contacts or up to two leading NO and NC contacts
• Can be designed as positively driven contacts in 3RH contactor relays
• Available with screw terminal and spring-type terminal

Customer benefits:

• Simple and efficient solution
• Part of the always up-to-date SIRIUS modular system