Siemens 3RV2901-1F SIRIUS Auxiliary Switch 2NO Screw Terminal 3RV2

The Siemens 3RV2901-1F is a SIRIUS transverse auxiliary switch with 2 instantaneous normally open (NO) contacts and screw terminals. It attaches via plug-in fixing directly onto 3RV2 motor circuit breakers in frame sizes S00, S0, S2, and S3. Rated at 300 V insulation voltage with 4 kV surge voltage resistance, it suits AC-12 control circuits up to 2.5 A.

Technical specifications:

• MLFB: 3RV2901-1F
• Manufacturer: Siemens
• Product line: SIRIUS
• Product type designation: 3RV29
• Design: Transverse auxiliary switch
• Contact arrangement: 2 NO instantaneous, 0 NC, 0 CO
• Compatible circuit breakers: 3RV2, sizes S00, S0, S2, S3
• Insulation voltage: 300 V
• Surge voltage resistance: 4 kV
• Operational current AC-12: 2.5 A at 24 V and 230 V
• Operational current AC-15: 2 A at 24 V, 0.5 A at 230 V
• Operational current DC-13: 1 A at 24 V, 0.3 A at 48 V, 0.15 A at 60 V
• IP rating (front): IP20 per IEC 60529
• Degree of pollution: 3
• Operating temperature: -20 ... +60 °C
• Storage temperature: -50 ... +80 °C
• Fastening: Plug-in
• Dimensions (W x H x D): 45 x 12 x 17 mm
• Net weight: 18 g
• Terminal type: Screw-type
• Conductor cross-section: 0.5 ... 2.5 mm² (solid, stranded, or finely stranded with core end processing)
• AWG range: 20 ... 14
• Certifications: CE, UL, CSA, CCC

Features and benefits:

• Transverse mounting fits across the circuit breaker body without increasing panel depth
• Plug-in fixing allows tool-free attachment to 3RV2 circuit breakers across all four frame sizes
• Finger-safe IP20 touch protection on the front per IEC 60529
• Wide operating temperature range of -20 to +60 °C for industrial environments
• Approved to CE, UL, CSA, and CCC for international use
• Compact 18 g design with no LED indicator

Applications:

• Signaling the switching status of 3RV2 motor circuit breakers in control panels
• Auxiliary interlocking in motor control centers requiring two NO contacts
• Status feedback in AC-15 and DC-13 control circuits within automation systems
• Position monitoring of 3RV2 breakers in industrial switchgear assemblies

Approved to CE, UL, CSA, and CCC. IP20 rated per IEC 60529. Part of the Siemens SIRIUS 3RV29 range.

Also known as: Siemens 3RV2901-1F, SIRIUS 3RV29 transverse auxiliary switch, 3RV2 auxiliary contact block 2NO.