SIEMENS 3RM1201-2AA04 Used Working SIRIUS 3RM1 Motor Starter

Product Overview

The Siemens 3RM1201-2AA04 (SIRIUS 3RM1) is a high-performance Failsafe Reversing Starter designed for the efficient and safe control of small three-phase motors. Combining the functionality of a contactor, an overload relay, and a reversing relay in a single, ultra-slim 22.5 mm housing, this hybrid motor starter significantly reduces cabinet space requirements. As a Used Working unit, it offers a robust solution for reversing motor directions (e.g., in conveyor systems or small pumps) while providing integrated electronic overload protection and safety-related shutdown capabilities.

Key Features

• Ultra-Slim Hybrid Design: Combines relay technology with semiconductor technology to provide a long electrical life and high switching frequency in a compact 22.5 mm width.
• Failsafe Reversing Functionality: Provides integrated reversing capability for 3-phase motors up to 0.75 kW (at 400V), simplifying wiring compared to traditional contactor assemblies.
• Adjustable Overload Protection: Features a wide current setting range from 0.1 to 0.5 Amps, allowing for precise protection of low-power motors.
• Integrated Safety: Rated for safety-related applications, supporting SIL3 (IEC 62061) and PL e (ISO 13849-1) when integrated into a safety circuit.
• Group Shutdown Capability: Features a control input for safe torque off (STO), allowing multiple starters to be shut down simultaneously via a single safety relay.
• Screw Terminal Connections: Equipped with reliable screw-type terminals for secure power and control wiring in high-vibration industrial environments.
• Status Monitoring: Features clear LED indicators on the front panel for "Device," "Direction of Rotation," and "Group Fault" diagnostic feedback.

Item Condition (Used Working)

• Functional Status: Used Working. This reversing starter has been professionally bench-tested under load. Both forward and reverse switching cycles have been verified, and the electronic overload trip mechanism is functional.
• Physical State: Clean industrial condition. The DIN rail mounting clip is secure, and the screw terminals show no signs of stripping or excessive wear.
• Technical Integrity: No "Internal Fault" or "Overload Trip" LEDs remained active during testing. The unit has been cleared of any previous fault history.
• Note: Professional installation is recommended. This unit requires a 24V DC control supply voltage; ensure the motor current falls within the 0.1A – 0.5A range before commissioning.

Package Includes

1. 1 x Siemens 3RM1201-2AA04 SIRIUS 3RM1 Failsafe Reversing Starter