Siemens 3RT2017-1HB42 SIRIUS Power Contactor, 12A, 5.5kW, 24V DC, 1NC Auxiliary, Screw Terminal, Size S00 Original Brand New

Overview

The Siemens 3RT2017-1HB42 is a high-performance SIRIUS series power contactor designed for reliable switching of electrical loads. This compact and robust 3-pole contactor is ideal for use in industrial control applications, particularly for controlling motors, heaters, and other resistive loads. With a rated operational current of 12A and a power rating of 5.5 kW at 400V, it offers excellent performance in a small frame. Its 24V DC operating coil is specifically designed to be compatible with PLC outputs, making it a perfect choice for modern automated systems. The integrated 1 NC auxiliary contact provides essential feedback for control circuits, and its screw terminals ensure a secure and durable connection.

Key Features & Benefit

• Compact & Space-Saving: The S00 frame size allows for high-density installation in control cabinets, helping you save valuable panel space.
• PLC-Compatible: The wide-range 24V DC operating voltage (0.7-1.25* Uc) makes it perfectly suited for direct control by PLC outputs without the need for additional interface relays.
• Reliable Performance: Engineered by Siemens, a global leader in industrial automation, this contactor provides long-term reliability and high switching capability for AC-3 and AC-3e applications.
• Integrated Auxiliary Contact: Comes with a pre-installed 1 Normally Closed (NC) auxiliary contact, simplifying wiring and reducing component count.
• Secure Screw Terminals: Ensures a strong, vibration-resistant connection, crucial for industrial environments.
• IEC 60947 Compliant: Meets international standards for low-voltage switchgear and controlgear, guaranteeing quality and safety.

Technical Specification

• Product Type: Power Contactor
• Product Number: 3RT2017-1HB42
• Series: SIRIUS 3RT2
• Rated Operational Current (AC-3e/AC-3): 12 A
• Rated Power (AC-3e/AC-3): 5.5 kW @ 400 V
• Number of Poles: 3-pole
• Operating Coil Voltage: 24 V DC (wide-range 0.7 to 1.25 * Uc)
• Auxiliary Contacts: 1 NC (Normally Closed)
• Terminal Type: Screw Terminal
• Frame Size: S00
• Switching Compatibility: Suitable for PLC outputs
• Additional Information: Cannot be extended with an auxiliary switch block.

Function

The Siemens 3RT2017-1HB42 power contactor serves as an electrically operated switch for a power circuit. When the 24V DC coil is energized, it closes the three main poles, allowing current to flow to a connected load, such as a motor. Simultaneously, the integrated 1 NC auxiliary contact opens, providing a signal that the contactor is engaged. This mechanism is fundamental for starting and stopping motors, and for controlling other power-consuming devices in automated systems.

Application

• Motor control circuits
• HVAC systems
• Pump and compressor control
• Lighting control
• Resistive load switching (e.g., heating elements)
• Integration into PLC-controlled machinery and automation systems.

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