Siemens 3RT1956-1CB00 Surge Suppressor (RC Element) for 3RT1 Contactors, 24-48V AC / 24-70V DC, Screw Terminals Original Brand New

Overview

The Siemens 3RT1956-1CB00 is a high-performance surge suppressor designed to protect sensitive electronic components within your control systems. Specifically engineered as an RC (Resistor-Capacitor) element, it’s a vital accessory for Siemens SIRIUS 3RT1 power contactors in sizes S6, S10, and S12. This suppressor effectively dampens voltage peaks and electrical noise, which can be generated when switching inductive loads. By absorbing these surges, the 3RT1956-1CB00 prevents damage to contactor coils and other control circuit components, significantly extending the operational life of your equipment and ensuring system reliability.

Key Benefit

• Enhanced Equipment Protection: Shields your contactor’s coil and adjacent electronics from damaging voltage spikes, prolonging the lifespan of your components.
• Increased System Reliability: Reduces the risk of unexpected failures and downtime caused by electrical surges, ensuring a more stable and dependable operation.
• Broad Voltage Compatibility: Designed to work seamlessly with a wide range of control voltages, operating on 24-48V AC and 24-70V DC. This versatility makes it suitable for various applications.
• Simple and Secure Installation: Features convenient screw terminals for a robust and reliable electrical connection to your contactor’s operating mechanism.
• Compact Design: The compact form factor allows for easy integration into existing control panels without requiring significant space.
• Genuine Siemens Quality: Manufactured by Siemens, a global leader in industrial automation, ensuring top-tier quality, performance, and long-term durability.

Function

The 3RT1956-1CB00 functions as an RC element, a passive electrical circuit consisting of a resistor and a capacitor connected in series. When the contactor’s coil is de-energized, the collapsing magnetic field generates a high-voltage inductive spike (also known as a flyback voltage). The RC element’s capacitor absorbs this surge, while the resistor helps to dissipate the energy, effectively clamping the voltage to a safe level. This action protects the contactor’s internal electronics and any connected solid-state control devices (like PLCs or relays) from potential damage.

Technical Specification

• Product Number: 3RT1956-1CB00
• Accessory Type: Surge Suppressor (RC element)
• Compatibility: Siemens SIRIUS 3RT1 Power Contactors, Sizes S6, S10, S12
• Connection Type: Screw Terminals
• Operating Voltage Range:
  • 24…48 V AC
  • 24…70 V DC
• Manufacturer: Siemens
• Series: SIRIUS

Application

• Industrial machinery control panels
• Motor control centers (MCCs)
• Automation systems and PLCs
• HVAC systems
• Pump and fan control
• Any application using Siemens 3RT1 S6, S10, or S12 contactors where inductive loads are switched

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