Siemens 3RT2016-1KB41 Power Contactor, 9A, 24V DC, S00 Original Brand New

Overview

The Siemens 3RT2016-1KB41 is a compact, high-performance SIRIUS 3RT2 power contactor designed for switching motors and auxiliary circuits. As part of the SIRIUS modular system, this size S00 coupling contactor offers reliable operation and space-saving integration into control cabinets.

It is rated for a maximum operational current of 9 A (AC-3e/AC-3) and 4 kW at 400 V, making it ideal for standard industrial motor control applications. This specific model features a 24 V DC control voltage with a wide operating range of 0.7−1.25×Uc​ and includes an integrated suppressor diode for coil protection, ensuring reliability when directly driven by sensitive PLC outputs. The unit provides a single Normally Open (1 NO) auxiliary contact and utilizes robust screw terminals for secure wiring.

Benefit

• PLC Compatibility: The 24V DC coil with an extended operating range and integrated suppressor diode ensures direct, reliable control from sensitive PLC outputs without external protective components.
• Compact Design: The Size S00 frame is extremely compact, saving valuable space in control panels and machinery.
• High Reliability: Part of the proven Siemens SIRIUS system, ensuring a long mechanical service life (typically 30,000,000 operating cycles) and high contact reliability.
• IE3/IE4 Ready: Optimized for efficient switching of modern, highly efficient IE3 and IE4 motors.
• Secure Connection: Screw terminals provide a time-tested, secure, and robust connection for main and auxiliary circuits.

Function

The 3RT2016-1KB41 functions as an electromechanical switching device (contactor) to control the flow of power to three-phase electrical loads, primarily motors, or heating elements.

1. Switching: It uses the 24V DC control signal to energize the coil, which closes the three main power contacts.
2. Motor Control: It is primarily used for AC-3 motor switching up to 4 kW (9 A) at 400 V.
3. Feedback/Interlocking: The integrated 1 NO auxiliary contact provides control feedback to the PLC or is used for simple interlocking circuits.
4. Coil Protection: The integrated suppressor diode protects the PLC output and contactor coil by absorbing voltage peaks generated when the coil is de-energized.

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