Siemens First lateral auxiliary switch, screw, 1NO + 1NC

Product Overview

First lateral auxiliary switch providing 1 NO + 1 NC contact configuration designed for side mounting on 3RT1 contactors. This SIRIUS 3RH19 auxiliary switch enables expansion of auxiliary contacts in control circuits with tool-free installation on contactors from sizes S0 to S12, featuring screw terminal connections and 10mm lateral mounting profile.

Key Features:

• Lateral mounting side-mounted design for space-efficient installation
• 1 NO + 1 NC configuration provides one normally open and one normally closed contact
• Tool-free installation easily fitted to 3RT1 contactors without additional tools
• Wide size compatibility fits contactors from Size S0 to S12
• 10mm profile compact lateral design minimizes panel space requirements
• Screw terminal connections secure and reliable wire termination

Technical Specifications:

• Contact Configuration: 1 NO + 1 NC
• Mounting Type: First lateral auxiliary switch
• Compatible Contactors: 3RT1 series (Sizes S0-S12)
• Connection Type: Screw terminal
• Standard Compliance: EN 50012
• Lateral Profile: 10mm
• Current Rating: 10A
• Voltage Rating: 250V AC/DC
• Net Weight: 0.048 kg
• Packaging Dimensions: 76mm x 85mm x 23mm
• Country of Origin: Romania

Contact Specifications:

• 1 Normally Open (NO) contact closes when contactor is energized
• 1 Normally Closed (NC) contact opens when contactor is energized
• Mixed contact configuration provides flexibility for control logic applications
• 10A current rating suitable for control circuit switching applications
• 250V AC/DC voltage capability for various control systems
• Instantaneous operation immediate response with contactor switching

Installation & Mounting:

• Lateral mounting side installation on compatible 3RT1 contactors
• Tool-free installation simple snap-on mounting without additional hardware
• 10mm lateral profile compact design for space-constrained applications
• Up to four auxiliary contacts can be mounted with various auxiliary switch block combinations
• Location digit compliance proper positioning according to contactor specifications

Applications: Essential component for expanding auxiliary contact capability in motor control applications, automation systems, and industrial control circuits. Ideal for applications requiring additional auxiliary contacts for interlocking, status indication, or control logic without front-mounting space limitations.

Compatibility: Designed specifically for 3RT1 contactor series from Size S0 to S12, providing seamless integration with SIRIUS contactor systems. The laterally mountable auxiliary switch blocks can only be used if no 4-pole auxiliary switch blocks are mounted on the front.

System Integration: Auxiliary switch SIRIUS 3RH19 for expansion of auxiliary contacts in control circuits. Available as versions for front or lateral mounting, with instantaneous contacts or leading NO and NC contacts. Can be designed as positively driven contacts in 3RH contactor relays or mirror contacts in 3RT power contactors.

Design Flexibility: The lateral mounting capability allows for flexible system design when front mounting space is limited or when additional auxiliary contacts are needed beyond front-mounted options. Multiple auxiliary switches can be combined for comprehensive control functionality.

Environmental Specifications:

• Industrial grade construction suitable for demanding control applications
• Reliable operation consistent performance in industrial environments
• Long service life designed for extended operational cycles
• Maintenance-free operation reliable contact performance without periodic maintenance

Compliance & Certifications:

• EN 50012 standard compliance
• IEC 60947-5-1 conformity
• RoHS directive compliant since July 1, 2006
• WEEE take-back obligation compliant
• REACH regulation compliant

Shipping Details:

• Net Weight: 0.048 kg
• Packaging Dimensions: 76mm x 85mm x 23mm
• EAN: 4011209379862
• UPC: 754554738857

Download existing graphical data for this product:

Product Datasheet

SIRIUS Auxiliary Switch Blocks Catalog

SIRIUS 3RT1 Contactor Technical Documentation

Lateral Auxiliary Switch Installation Guide