Siemens Auxiliary switch transverse, screw, 1 NO+1 NC

Product Overview

The SIRIUS 3RV2901-1E is a transverse auxiliary switch designed for front-mounted integration with 3RV2 circuit breakers. This compact auxiliary contact block provides 1 NO + 1 NC contact configuration with screw terminal connections, offering versatile circuit breaker status monitoring and control capabilities in industrial automation applications.

Key Features

This auxiliary switch is part of the SIRIUS modular system, featuring a unique transverse (front-mounted) design that differs from side-mounted versions. Provides simple, efficient, and reliable signaling with mechanical fixed actuator and copper contacts, suitable for applications requiring both normally open and normally closed contact configurations.

Technical Specifications

• Contact Configuration: 1 NO + 1 NC (1 Normally Open + 1 Normally Closed)
• Mounting Type: Transverse (front-mounted)
• Connection Type: Screw terminals
• Frame Size Compatibility: S00/S0/S3 circuit breakers
• Compatible Products: 3RV2 series circuit breakers
• Rated Operational Current: 0.5A at AC-15, 230V
• Actuator Type: Mechanical fixed actuator
• Contact Material: Copper contacts
• Weight: 0.018kg
• Number of Contacts: 2 (1 NO + 1 NC)
• Number of Changeover Contacts: 0
• Switching Positions: 2-position operation

Electrical Ratings

• Operational Current: 0.5A at AC-15, 230V
• Contact Configuration: 1 NO + 1 NC arrangement
• Switching Capacity: Suitable for low-current control circuit applications
• Mechanical Life: High-reliability contact operation
• Electrical Life: Extended operational cycles for control applications
• Insulation: Suitable for industrial voltage levels

Design & Construction

Features unique transverse (front-mounted) design with clip-on mounting mechanism for easy installation. The mechanical fixed actuator provides reliable contact operation linked directly to circuit breaker position. Screw terminal connections ensure secure electrical connections for both NO and NC circuits.

Applications

This transverse auxiliary switch is designed for various control and monitoring applications, including:

• Circuit breaker status monitoring with dual contact states
• Control circuit interlocking requiring both NO and NC contacts
• Alarm and signaling systems with complementary outputs
• Motor control applications requiring status feedback
• Industrial automation systems with mixed signal requirements
• Process control applications with dual-state indication
• Safety circuit applications requiring fail-safe operation
• Remote indication with both active and passive signals

Installation & Mounting

• Mounting: Transverse (front-mounted) on 3RV2 circuit breakers
• Installation: Clip-on design for easy attachment
• Mounting Method: Front-mounting with secure clip mechanism
• Compatibility: Compatible with 3RV2 series circuit breakers S00-S3
• Tool Requirements: Standard screwdriver for terminal connections
• Accessibility: Front-accessible for easy maintenance

SIRIUS System Integration

• Modular System: Part of the comprehensive SIRIUS modular system
• Compatibility: Designed specifically for 3RV2 circuit breakers
• Flexibility: Can be combined with other SIRIUS components
• Standardization: Consistent design and connections across SIRIUS range
• Current Generation: Part of modern SIRIUS product line

Wiring & Connections

• Terminal Type: Screw terminals
• Wire Range: Standard control circuit wire sizes
• Connection Method: Screw-clamp connections
• Terminal Markings: Clearly marked NO and NC terminals
• Accessibility: Easy access for wiring and maintenance
• Dual Circuits: Independent NO and NC terminal sets

Contact Configuration Details

• NO Contact: Closes when circuit breaker is ON
• NC Contact: Opens when circuit breaker is ON
• Mechanical Operation: Direct mechanical linkage to circuit breaker
• Complementary Action: NO and NC contacts operate in opposite states
• Isolation: Electrical isolation between contact circuits
• Reliability: Positive mechanical operation ensures reliable switching

Transverse Design Advantages

• Space Efficiency: Front-mounting saves lateral space
• Easy Access: Front-accessible for maintenance and wiring
• Compact Installation: Minimal additional footprint
• Visual Indication: Easy to identify switch position
• Mechanical Reliability: Direct mechanical actuation from circuit breaker

Compliance & Certifications

• Country of Origin: Czech Republic
• EAN: 4011209790964
• RoHS Compliance: Since 01.10.2009
• WEEE Compliance: Yes
• REACH Regulation: Compliant with current substance restrictions
• Product Class: A: Standard stock item
• Quality Standards: Manufactured to Siemens quality standards

Operating Characteristics

• Contact Operation: Mechanical operation linked to circuit breaker
• Position Indication: Direct indication of circuit breaker status
• Response Time: Instantaneous operation with circuit breaker
• Operating Temperature: Industrial temperature range
• Environmental Protection: Suitable for industrial environments
• Vibration Resistance: Robust construction for industrial applications

Replacement & Compatibility

• Replaces: 3RV1901-1E (previous generation)
• Equivalent Products: Comparable to Schneider Electric Square D GVAE11 & LA1LC021
• Compatibility: Designed specifically for 3RV2 series
• Size Range: Compatible with S00/S0/S3 frame sizes
• Note: Transverse design provides alternative to side-mounted versions

Environmental Considerations

The device is designed for industrial environments and meets environmental compliance requirements. It complies with WEEE take-back obligations and RoHS substance restrictions for environmentally responsible manufacturing and disposal.

Application Benefits

• Dual Contact States: Provides both NO and NC contacts for versatile applications
• Mechanical Reliability: Direct mechanical operation ensures positive contact action
• Compact Design: Transverse mounting minimizes space requirements
• Easy Installation: Clip-on design simplifies installation process
• Maintenance Access: Front-mounted design provides easy access for service

Download existing graphical data for this product:

• Technical Datasheet (PDF)
• CAD Models and Technical Drawings
• Product Documentation
• Installation Manual