Siemens 3RT2017-2KA42 SIRIUS Power Contactor 12A, 12VDC, S00 Original Brand New

Overview: Siemens 3RT2017-2KA42 SIRIUS 3RT2 Power Contactor 

The Siemens 3RT2017-2KA42 is a compact, high-performance SIRIUS 3RT2 power contactor specifically designed for switching motors, as well as auxiliary and control circuits. Part of the SIRIUS modular system, this size S00 contactor offers outstanding performance with a slim design and high contact reliability, making it an excellent choice for modern industrial control applications.

Key features include a $12\text{ A}$ operational current (AC-3e/AC-3), a robust $5.5\text{ kW}$ power rating at $400\text{ V}$, and a highly efficient $12\text{ V DC}$ operating coil with an extended control range (0.7−1.25×Uc​) and integrated suppressor diode for protection against voltage peaks. The unit features spring-loaded terminals for fast, maintenance-free, and vibration-proof wiring, and includes one integrated Normally Closed ($\text{1 NC}$) auxiliary contact. It is perfectly suitable for direct connection to PLC outputs.

Benefit

• Optimal SEO: Product number $3RT2017-2KA42$ is the primary keyword, ensuring high search engine ranking.
• Reliable Performance: High switching capacity for motors up to $5.5\text{ kW}$ in a compact size S00.
• PLC Integration Ready: The low $12\text{ V DC}$ control voltage and integrated suppressor diode are ideal for direct, safe, and reliable connection to sensitive electronic PLC outputs.
• Fast & Secure Wiring: Spring-loaded terminals dramatically reduce wiring time, are resistant to vibration, and are maintenance-free, offering long-term reliability.
• Integrated Protection: Built-in suppressor diode eliminates coil switch-off surges, protecting sensitive control electronics (PLCs/digital outputs).

Function

The 3RT2017-2KA42 Power Contactor functions as an electromechanical switching device primarily to:

1. Switch 3-Phase Loads: Safely make and break circuits for three-phase motors and other loads up to $12\text{ A}$ (AC-3e/AC-3).
2. Remote Control: Enables remote switching operations in automation systems using a $12\text{ V DC}$ control signal.
3. Circuit Indication: The integrated $1\text{ NC}$ auxiliary contact provides feedback on the contactor’s status to the control system or interlocking circuits.

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