Siemens 3RT2016-2KB42 SIRIUS Power Contactor, 9A, 4kW, 24V DC, 1 NC, Spring-Loaded Terminal, S00 Original Brand New

Overview

The Siemens 3RT2016-2KB42 is a compact, high-performance SIRIUS power contactor designed for switching motors up to $4\text{ kW }(400\text{ V})$ in standard AC-3 and the new AC-3e efficiency class. Part of the reliable SIRIUS modular system, this size S00 contactor is engineered specifically for control applications, particularly those driven by sensitive PLC outputs.

It features a low-power $24\text{ V DC}$ operating coil with a wide operating range of $0.7-1.25\times \text{ Uc}$ and an integrated suppressor diode for coil protection, minimizing voltage peaks and simplifying wiring. The spring-loaded terminals ensure quick, reliable, and vibration-proof wiring, making it ideal for high-vibration environments and fast assembly. The unit comes equipped with $1\text{ NC}$ (Normally Closed) auxiliary contact.

Benefit

• Reliable PLC Interface: Built-in suppressor diode and optimized coil power make it directly suitable for coupling to PLC outputs, reducing the need for external components.
• Fast, Secure Wiring: Spring-loaded terminals (cage clamp connection) drastically cut wiring time, offer a vibration-proof connection, and ensure maintenance-free operation.
• Space-Saving Design: Its compact S00 frame size helps to save valuable space within control cabinets and panels.
• Global Standard Compliance: Approved worldwide (IEC, UL/CSA ready) for use in international projects.
• High Efficiency: Complies with both AC-3 and the energy-efficient AC-3e operation classes.

Function & Application

The Siemens 3RT2016-2KB42 power contactor is primarily used in industrial automation and control systems for switching 3-phase asynchronous motors and other resistive loads.

• Switching Motors: Controlling the ON/OFF operation of smaller motors, pumps, and fans up to $4\text{ kW}$.
• PLC Interfacing: Acting as a crucial interface between low-power PLC digital outputs ($24\text{ V DC}$) and the higher power circuits of a motor or load.
• Heating Loads: Switching resistive heating elements.
• Machinery: Integration into machine tools, conveyor systems, and packaging equipment where reliable motor control is essential.

Installation & Compatibility

This specific contactor model features an extended control voltage operating range to ensure reliable operation even under voltage fluctuations. The spring-loaded technology allows for conductor insertion without tools, ensuring rapid, error-free installation. Due to its integrated features, this particular model is designed as a standalone solution and cannot be expanded with additional clip-on auxiliary switch blocks.

For more products and technical information on the SIRIUS 3RT20 series, visit Turll today!