Siemens Solid-state contactor, 1-phase, screw, 24VDC, 2A

Product Overview

Solid-state contactor for 1-phase applications providing reliable switching of resistive and inductive loads with zero-point switching technology. This SIRIUS 3RF2 series contactor delivers 20A switching capacity at 48-460V AC with 24V DC control voltage, featuring screw terminal connections and an integrated heat sink for efficient thermal management.

Key Features:

• 1-phase switching designed for single-phase resistive and inductive load control
• Zero-point switching wear-free operation with silent switching for noise-sensitive environments
• High current capacity 20A switching capability at AC-1 and AC-51 load types
• Wide voltage range operates from 48-460V AC for versatile application requirements
• 24V DC control low-voltage control circuit for safe operation
• Integrated heat sink built-in thermal management eliminates external cooling requirements

Technical Specifications:

• Load Voltage: 48-460V AC
• Control Voltage: 24V DC
• Rated Current: 20A (AC-1 and AC-51)
• Number of Phases: 1-phase
• Switching Type: Zero-point switching
• Connection Type: Screw terminal
• Operating Temperature: -25°C to 60°C (at 40°C derating)
• Dimensions: 22.5mm (W) x 100mm (H) x 140.5mm (D)
• Net Weight: 0.190 kg
• Protection Rating: IP20
• Country of Origin: Germany

Switching Technology:

• Zero-point switching ensures switching occurs at optimal voltage points for minimal electrical stress
• Solid-state design eliminates mechanical wear and provides silent operation
• High switching frequency capability ideal for applications requiring frequent switching cycles
• No contact bounce instantaneous and precise switching without mechanical contact issues

Applications: SIRIUS 3RF23 solid-state contactor designed for switching resistive and inductive loads such as heaters, valves in bottling plants, lighting systems, and other single-phase equipment. Perfect for noise-sensitive environments including offices, hospitals, and precision manufacturing facilities where silent operation is essential.

Installation & Mounting:

• DIN rail mounting standard 35mm DIN rail installation
• Panel mounting alternative mounting option for control panels
• Compact design space-efficient 22.5mm width saves DIN rail space
• Screw terminals secure and reliable wire connections
• Integrated design built-in heat sink eliminates external cooling requirements

System Integration: Simple, efficient, always up-to-date - the SIRIUS modular system. The solid-state contactors can be expanded with standardized 3RF29 function modules for various applications by simply clicking them on. Compatible with SIRIUS motor starter protectors, overload relays, and current monitoring relays.

Advantages:

• Wear-free operation solid-state technology eliminates mechanical contact wear
• Silent switching ideal for noise-sensitive applications
• High reliability extremely reliable even at high switching frequencies
• Maintenance-free no mechanical parts requiring service or replacement
• Worldwide approvals IEC and UL/CSA certifications

Compliance & Certifications:

• UL File E143112 in Vol.1 Sec.8
• IEC certified for international applications
• RoHS directive compliant since May 28, 2009
• WEEE take-back obligation compliant
• REACH regulation compliant with substance information disclosure

Shipping Details:

• Net Weight: 0.190 kg
• Packaging Dimensions: 28mm x 108.5mm x 147mm
• EAN: 4011209572423

Download existing graphical data for this product:

Product Datasheet

SIRIUS 3RF2 Solid-State Contactors Catalog

SIRIUS Solid-State Contactor Technical Documentation

Solid-State Switching Technology Guide