Siemens blocco contatti ausiliari 3RH2911-2GA31, 1 NA + 1 NC, collegamento a vite, montaggio frontale

This auxiliary switch block expands the functionality of SIRIUS 3RT2 contactors and 3RH2 control relays with one normally open and one normally closed contact. It mounts directly on the front of the device and uses screw terminals for secure wiring.

Advantages

Front mounting allows quick installation without tools. Screw terminals accept solid or finely stranded conductors from 0.5 to 2.5 mm², ensuring reliable connections in industrial environments.

Suitable for

• Switching auxiliary circuits in motor control applications
• Status signaling and interlocking in control systems
• Use with SIRIUS 3RT2 contactors and 3RH2 control relays

Key specifications

• Contact configuration: 1 NO + 1 NC
• Rated insulation voltage: 690 V AC/DC
• Operating current at AC-15, 230 V: 6 A
• Operating current at DC-13, 24 V: 10 A
• Mechanical endurance: 30,000,000 switching cycles
• Degree of protection: IP40 front, IP20 terminals

Recommendations

Ideal for control panels where reliable auxiliary contacts are required for signaling and interlocking functions.