Siemens 3RT1955-5AD31 Withdrawable Coil Drive for SIRIUS 3RT105/3RT145 Contactors, 42-48V AC/DC, Screw Terminal Original Brand New

Overview

The Siemens 3RT1955-5AD31 is a high-performance withdrawable magnet coil, often referred to as a “drive” or operating mechanism, specifically designed as a spare part or accessory for the SIRIUS 3RT105 and 3RT145 power contactors (Size S6). As a critical component in industrial control systems, this coil ensures reliable and flexible operation of your contactors, providing essential control for motors and other electrical loads. Its universal AC/DC capability and dual operating modes make it a versatile choice for modern industrial automation.

Key Benefit

• Universal Voltage: Operates on both AC (50/60 Hz) and DC control power, simplifying inventory and application flexibility.
• Wide Voltage Range: Specifically designed for a control supply voltage of 42 V to 48 V UC (Universal Control), ensuring consistent performance even with minor voltage fluctuations.
• Energy Efficiency: Features a switchable Standard/Economy Circuit operating mechanism, allowing for reduced power consumption (economy mode) once the contactor has been reliably closed (held). This lowers operating costs and heat generation.
• Easy Installation: Designed as a withdrawable drive for straightforward replacement and maintenance in 3RT105 and 3RT145 contactors.
• Secure Connection: Utilizes robust screw terminals for a reliable, high-integrity connection of the control wiring.
• Genuine Siemens Quality: A core component of the highly reliable SIRIUS modular system, manufactured in Germany for long-term industrial use.

Technical Function & Compatibility

The 3RT1955-5AD31 coil is the electromagnetic actuator responsible for opening and closing the main contacts in the Siemens SIRIUS Size S6 contactors.

• Product Number: 3RT1955-5AD31
• Product Type: Withdrawable Magnet Coil / Drive / Operating Mechanism
• Contactor Compatibility: Siemens SIRIUS Power Contactors 3RT105 (for motor switching, up to 150kW/AC-3) and 3RT145 (for switching resistive loads, up to 300A/AC-1).
• Contactor Size: S6
• Control Supply Voltage (UC): 42-48V AC (50/60Hz) / DC
• Terminal Type: Screw Terminal
• Operating Modes: Standard circuit and economy circuit for reduced holding power.

Application

Ideal for maintenance, repair, and operations (MRO) or as a replacement part in applications using Siemens SIRIUS 3RT105/3RT145 contactors, including:

• Motor control centers (MCCs)
• Industrial machine control panels
• HVAC systems
• Pumping stations
• Conveyor systems

For more of our high-quality industrial automation and control products, visit Turll today!