Product Overview

Thermistor motor protection relay compact evaluation unit 17.5 mm enclosure screw terminal 1 NO contact, 1 NC contact Us = 24 V AC/DC Auto RESET suitable for bimetallic switch 2 LEDs (ready/tripped) electrical isolation

This SIRIUS 3RN2 thermistor motor protection relay (Article Number: 3RN2010-1CA30) is a compact evaluation unit designed for reliable motor protection through thermistor monitoring. The device features a 17.5 mm wide enclosure with screw terminals and operates on 24 V AC/DC supply voltage. It provides comprehensive motor protection with automatic reset functionality, dual LED status indication, and electrical isolation for safe operation in industrial environments.

Key Features

• Compact 17.5 mm width for space-efficient installation
• Thermistor evaluation for precise temperature monitoring
• 24 V AC/DC operation for versatile power supply options
• Auto RESET functionality for automatic recovery after fault clearing
• Dual LED indicators (ready/tripped) for clear status display
• 1 NO + 1 NC contacts for flexible switching applications
• Electrical isolation ensuring safe operation
• Bimetallic switch compatibility for enhanced protection options
• Screw terminal connections for secure and reliable wiring

Technical Specifications

• Net Weight: 0.135 kg
• Packaging Dimensions: 111.00 x 128.00 x 38.00 mm
• Packaging Quantity: 1 piece
• Quantity Unit: 1 Piece
• Country of Origin: Germany
• Enclosure Width: 17.5 mm
• Supply Voltage: 24 V AC/DC
• Contact Configuration: 1 NO + 1 NC
• Reset Type: Auto RESET
• Terminal Type: Screw terminals
• LED Indicators: 2 LEDs (ready/tripped)

Applications

• Motor protection in industrial automation systems
• Temperature monitoring of electric motors and drives
• Process control systems requiring thermal protection
• Manufacturing equipment with motor-driven components
• HVAC systems with motor protection requirements
• Pumping systems requiring thermal monitoring
• Material handling equipment with motor protection needs
• Machine tool applications requiring precise thermal protection

Protection Features

• Thermistor monitoring for accurate temperature detection
• Automatic reset after fault condition clears
• Fault indication through dedicated LED display
• Electrical isolation between input and output circuits
• Bimetallic switch support for additional protection options
• Temperature-based switching for motor protection
• Reliable fault detection preventing motor damage

Installation Benefits

• Compact design maximizing panel space utilization
• Simple wiring with screw terminal connections
• Clear status indication through dual LED display
• Flexible mounting on standard DIN rail systems
• Easy maintenance with accessible terminal design
• Professional appearance maintaining system aesthetics
• Reliable operation in demanding industrial environments

Compatibility

• Thermistor sensors for temperature monitoring
• Bimetallic switches for enhanced protection
• Motor control systems requiring thermal protection
• Industrial control panels with space constraints
• 24 V AC/DC power systems for versatile installation
• Standard DIN rail mounting systems

Product Classifications

• Product Lifecycle: PM300 Active Product
• eClass: 27-37-15-03 (versions 6-14)
• ETIM: EC002568 (versions 7, 8 & 9)
• UNSPSC: 39-12-22-29

Compliance & Certifications

• Export Control: AL: N / ECCN: N
• RoHS Compliance: Since 28.05.2009
• WEEE Take-Back Obligation: Yes

REACH Compliance

Information obligation imposed by Article 33, REACH Regulation: This product includes articles containing substances from the candidate list in concentrations higher than 0.1% weight by weight (w/w): Lead and Lead monoxide (lead oxide). Based on current information, these substances do not pose risk when used as intended, including disposal. Please refer to product documentation for additional guidance.

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For technical documentation and CAD files, please visit:

• Official Product Datasheet (PDF)
• Siemens Industry Mall Product Page
• Siemens PARTcommunity for 3D CAD Models
• Siemens Technical Support Center for technical documentation requests