Siemens First lateral auxiliary switch for 3RT1, 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 lateral mounting profile for space-efficient installations.

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
• Compact lateral profile 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
• Current Rating: 10A
• Voltage Rating: 230V AC
• Dimensions: 80mm (L) x 10mm (W) x 71mm (H)
• Net Weight: 0.049 kg
• Packaging Dimensions: 75mm x 85mm x 23mm
• Country of Origin: Czech Republic

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
• 230V AC voltage capability for motor 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
• Compact lateral design space-efficient for crowded control panels
• Up to four auxiliary contacts can be mounted with various auxiliary switch block combinations
• Easy removal laterally mountable blocks can be removed by pressing on fluted grips

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 where lateral mounting is preferred over front mounting.

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 for front or lateral mounting, with instantaneous contacts for immediate switching response. Can be designed as positively driven contacts in 3RH contactor relays or mirror contacts in 3RT power contactors.

Design Flexibility: Single or 2-pole auxiliary switch blocks with only one connection option from above or below are provided for easy and clearly arranged wiring, especially for the installation of feeders. The lateral mounting capability allows for flexible system design when front mounting space is limited.

Wiring Configuration: The auxiliary switch blocks are offered only with screw terminals and provide clear wiring arrangements for both normally open and normally closed contact functions. If single-pole auxiliary switch blocks are used in addition, the location digits on the contactor must be noted.

Environmental Specifications:

• Industrial grade construction suitable for demanding motor 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: 0.049 kg
• Packaging Dimensions: 75mm x 85mm x 23mm
• EAN: 4011209293526
• UPC: 754554401850

Download existing graphical data for this product:

Product Datasheet

SIRIUS Auxiliary Switch Blocks Catalog

SIRIUS 3RT1 Contactor Technical Documentation

Lateral Auxiliary Switch Installation Guide