Siemens SIRIUS 3RT20 Power Contactor, 9A, 4kW, 24V DC, 1NC Auxiliary, Size S00, with Varistor Original Brand New

Overview

The Siemens 3RT2016-1WB42 is a high-performance, compact power contactor from the globally recognized SIRIUS 3RT2 series. Specifically designed for switching three-phase motors and other inductive loads, this device is engineered for maximum reliability and efficiency in industrial automation and control applications.

It is rated for $9\text{ A}$ (AC-3e/AC-3) and $4\text{ kW}$ at $400\text{ V}$. Key features include a highly reliable $24\text{ V DC}$ control coil with an extended operating range ($\text{0.85-1.85 }\ast \text{Uc}$) and an integrated varistor for effective surge suppression and coil protection. The compact Size S00 frame makes it ideal for space-constrained installations.

Benefit

• Exceptional Reliability: Part of the proven Siemens SIRIUS modular system, ensuring high contact reliability and a long mechanical service life (up to 30,000,000 switching cycles).
• Space-Saving Design: The ultra-compact S00 size allows for higher density mounting in control panels, optimizing cabinet space.
• System Protection: The integrated varistor provides essential surge suppression, protecting the contactor coil and the $24\text{ V DC}$ control system from harmful voltage peaks.
• Simplified Wiring: Comes with a pre-installed $1\text{ NC}$ auxiliary contact, reducing the need for external components for basic control circuit feedback and interlocking.
• Global Standard Compliance: $\text{IE3/IE4}$ ready and approved for worldwide use ($\text{IEC}$, $\text{UL/CSA}$), simplifying standardization across global operations.

Application

The 3RT2016-1WB42 power contactor is primarily used for:

• Switching of three-phase squirrel-cage motors (AC-3/AC-3e duty).
• Switching of resistive loads (AC-1 duty).
• Controlling auxiliary and lighting circuits in industrial and commercial environments.
• Integration into motor starters, reversing contactor assemblies, and complex industrial control panels.

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