Siemens Auxiliary switch transverse, 1NO+1NC, spring Part number 3RV2901-2E

Product Overview

The Siemens 3RV2901-2E is a SIRIUS auxiliary switch designed for transverse mounting on SIRIUS 3RV2 motor protection circuit breakers. It provides one normally open (1NO) and one normally closed (1NC) contact, operated via a spring-loaded mechanism. This auxiliary switch enables reliable status signaling, control feedback, and interlocking functions in motor control and automation systems.

Key Features

• Auxiliary switch for SIRIUS 3RV2 motor protection circuit breakers
• Transverse (side) mounting design
• Contact configuration: 1 NO + 1 NC
• Spring-loaded switching mechanism
• Provides electrical status indication and control signaling
• Compact design for space-efficient panel layouts
• Reliable mechanical coupling to breaker switching state

Technical Specifications

• Article Number: 3RV2901-2E
• Product Family: SIRIUS 3RV2 Accessories
• Accessory Type: Auxiliary switch
• Mounting Method: Transverse (side-mounted)
• Contact Configuration: 1 NO + 1 NC
• Contact Operation: Spring-loaded
• Compatible Devices: SIRIUS 3RV2 motor protection circuit breakers
• Rated Insulation Voltage: According to associated 3RV2 device
• Connection Type: Screw terminals
• Installation Environment: Industrial control panels and switchgear

Compliance & Standards

• Designed to integrate with Siemens SIRIUS 3RV2 motor protection systems
• Meets Siemens requirements for auxiliary signaling and control devices
• Suitable for industrial low-voltage control and automation applications

Applications

The Siemens 3RV2901-2E auxiliary switch is used to provide feedback signals such as ON/OFF status, trip indication, or interlocking logic in motor starters and protection circuits. It is commonly applied in motor control centers, automation panels, and industrial switchgear where reliable auxiliary signaling from 3RV2 motor protection circuit breakers is required.