Siemens 3RU2116-0AB0 SIRIUS Thermal Overload Relay, 0.11-0.16A, Size S00 Original Brand New

Overview

The Siemens 3RU2116-0AB0 is a cornerstone of the Siemens SIRIUS modular system, specifically engineered to provide current-dependent protection for loads with normal starting conditions. This thermal overload relay is designed to safeguard three-phase and single-phase AC motors against excessive temperature rises resulting from overloads or phase failures.

By integrating seamlessly with Siemens 3RT contactors, the 3RU2116-0AB0 ensures a compact and efficient control cabinet layout. Its robust design and Class 10 tripping characteristic make it an industry standard for reliability in harsh industrial environments.

Key Benefit

• Space-Saving Design: As part of the S00 size family, it offers a compact footprint, allowing for high-density mounting in electrical panels.

• Flexible Reset Options: Features a versatile "Manual-Automatic-Reset" selector, allowing maintenance teams to choose the safest recovery method for their specific application.

• Cost-Effective Protection: Provides essential protection against motor burnout, significantly reducing downtime and equipment replacement costs.

• Easy Integration: Designed for direct mounting onto 3RT201 contactors, eliminating the need for additional wiring between the contactor and the relay.

• Global Compliance: Meets international standards (IEC, UL, CSA), ensuring its suitability for global export projects.

Functionality

• Overload Protection: Continuously monitors the current consumption of the connected load.

• Phase Failure Sensitivity: Integrated features allow the relay to trip faster in the event of a phase loss, preventing unbalanced heating in the motor.

• Temperature Compensation: The 3RU21 series is compensated for ambient temperature variations between -40°C and +70°C, ensuring consistent performance regardless of factory conditions.

• Signal Indication: Features a built-in switch position indicator and a "TEST" function to verify the wiring and functionality of the auxiliary contacts.

Application

The Siemens 3RU2116-0AB0 is typically utilized in low-power industrial applications, including:

1. Small Pump Motors: Protection for dosing pumps and precision fluid systems.

2. Conveyor Systems: Monitoring small drive motors in packaging or assembly lines.

3. HVAC Systems: Safeguarding fan motors and small actuators.

4. Machine Tooling: Protecting auxiliary spindles and cooling motors in CNC machinery.

Installation and Maintenance

Thanks to the SIRIUS modular system, installation is tool-free when mounting directly to a 3RT201 contactor. The screw terminals are designed for high pull-out resistance, ensuring a vibration-proof connection even in heavy-duty environments. For maintenance, the transparent cover over the current setting dial prevents accidental changes to the protection parameters.

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