Auxiliary Conatct - 3RV190-1A - SIEMENS 3RV Contac Block 3RV1901A

Description:

The Siemens 3RV1901-1A Contact Block is used in motor protection and industrial control systems to provide auxiliary switching contacts for monitoring, signaling, and interlocking functions. Commonly installed on Siemens SIRIUS 3RV motor starter protectors in control panels, motor control centers, manufacturing equipment, and automation systems. Maintenance teams and system integrators use this part for replacement, retrofit, and expansion of motor protection circuits to improve control flexibility and system monitoring capabilities.

Applications:

The Siemens 3RV1901-1A Contact Block is widely used in industrial control panels, motor starter assemblies, conveyor systems, process automation equipment, packaging machinery, and OEM equipment. The auxiliary contact block provides additional normally open and normally closed contacts for status indication, electrical interlocking, alarm signaling, and control circuit expansion in motor protection applications.

Technical Specifications:

• Manufacturer Part Number (MPN): 3RV1901-1A
• Brand: Siemens
• Product Type: Contact Block
• Series: SIRIUS 3RV1
• Contact Configuration: 1NO + 1NC
• Mounting Style: Side Mounted / Lateral Mount
• Compatible Devices: Siemens 3RV Motor Starter Protectors
• Compatible Sizes: S00, S0, S2, S3
• Number of Contacts: 2
• Terminal Type: Screw Terminal
• Maximum Operating Current: 10 A
• Protection Rating: IP20
• Mounting Method: Plug-In Fixing
• Application: Auxiliary Signaling and Control Circuits
• Operating Temperature: -20°C to +60°C
• Certifications: CE, UL, CSA, CCC

Common Replacements:

• Siemens 3RV2901-1A Contact Block
• Siemens 3RV1901-1D Contact Block
• Siemens 3RH1921-1CA10 Auxiliary Contact Block