Siemens 3RT2017-1BW42 SIRIUS Power Contactor, 12A, 48V DC, 1NC Original Brand New

Overview: Siemens SIRIUS 3RT2017-1BW42 Power Contactor

The Siemens 3RT2017-1BW42 is a compact and highly reliable SIRIUS 3RT20 series power contactor designed for switching motors and other electrical loads. As an essential component of the modular SIRIUS system, this 3-pole contactor is engineered for performance, climate resistance, and global use (IEC/UL/CSA approved).

It features a robust design in Size S00 and comes equipped with durable screw terminals for secure and straightforward wiring. The integrated $1\text{ NC}$ (Normally Closed) auxiliary contact in the base unit saves space and simplifies your control circuit design.

Benefit

• Exceptional Reliability: Part of the globally recognized Siemens SIRIUS range, known for high contact reliability and prolonged mechanical endurance.
• Compact Design: The Size S00 form factor and integrated auxiliary contact allow for maximum packing density in control cabinets, saving valuable space.
• Simplified Wiring: Screw terminals provide a time-tested, secure, and robust connection for both main and control circuits.
• DC Coil Efficiency: The $48\text{ V DC}$ coil ensures consistent and quiet operation with low power consumption.
• Global Standard Compliance: Approved for worldwide use (IEC, UL/CSA) and climate-resistant, making it suitable for diverse industrial environments.
• Future-Proof: The contactor is IE3/IE4-ready, supporting the latest high-efficiency motor standards.

Function

The 3RT2017-1BW42 Power Contactor functions as an electrically controlled switch used for the remote control of power circuits. It is primarily used for switching 3-phase AC motors up to $5.5\text{ kW}$ at $400\text{ V}$ (AC-3/AC-3e rating). When the $48\text{ V DC}$ control coil is energized, the three main contacts close, connecting the load to the power supply. The integrated $1\text{ NC}$ auxiliary contact provides feedback or control interlocking functionality in the overall automation system.

Application

• Switching of $3\text{-phase}$ standard and high-efficiency motors.
• Controlling resistive loads.
• Integration into complex machinery and automation systems.
• Use in motor starter combinations (in conjunction with an overload relay).
• Any industrial control application requiring a reliable $12\text{ A}$ switching device with $48\text{ V DC}$ control.

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