Siemens 3RT1956-1CD02: Surge Suppressor (RC Element) for 3RT1 S6-S12 Contactors, 127-240V AC / 150-250V DC with Spring-Type Terminals Original Brand New

Overview

The Siemens 3RT1956-1CD02 is a high-performance surge suppressor designed specifically for the SIRIUS 3RT1 series power contactors, including sizes S6, S10, and S12. This RC element effectively protects contactor coils from damaging voltage peaks and transient overvoltages, ensuring the longevity and reliability of your industrial control systems. Its compact design and integrated spring-type terminals simplify installation, making it a perfect drop-in solution for new and existing applications. Engineered for a wide range of operating voltages—127-240V AC and 150-250V DC—this surge suppressor provides robust protection in diverse industrial environments.

Key Features & Benefit

• Optimized Protection: Utilizes an RC (Resistor-Capacitor) element to effectively dampen and absorb voltage spikes, preventing premature failure of contactor coils.
• Extended Equipment Life: Protects sensitive components from electrical noise and voltage transients, significantly extending the operational lifespan of your contactors and connected machinery.
• Easy Installation: Features innovative spring-type terminals for quick, secure, and tool-free wiring. This reduces installation time and simplifies maintenance.
• Wide Voltage Compatibility: Supports both AC (127…240 V) and DC (150…250 V) control supply voltages, offering versatility across different applications.
• Seamless Integration: Specifically designed for seamless mechanical and electrical integration with Siemens SIRIUS 3RT1 contactors (sizes S6, S10, and S12).
• Reliable Performance: Manufactured by Siemens, a global leader in industrial automation, ensuring high quality and dependable performance in demanding applications.

Function

The Siemens 3RT1956-1CD02 surge suppressor works by connecting in parallel with the contactor coil. When the coil is de-energized, the collapsing magnetic field generates a high-voltage spike (back EMF). The RC element acts as a low-impedance path for this energy, diverting the voltage spike and dissipating it as heat. This process protects the coil and any associated control electronics, such as PLCs or relays, from damage. The spring-type terminals provide a reliable, vibration-resistant connection, ensuring consistent performance even in harsh industrial settings.

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