Siemens SIRIUS 3RT2916-1CB00 RC Element Surge Suppressor, 24-48V AC / 24-70V DC for 3RT2.1 Contactors Original Brand New

Overview

The Siemens SIRIUS 3RT2916-1CB00 surge suppressor is a crucial accessory designed to protect the coil of your switching devices from damaging voltage peaks. It utilizes a Resistor-Capacitor (RC) element to effectively dampen switch-off surges, ensuring the longevity and reliability of your control system. This specific model is engineered for the compact and widely used SIRIUS 3RT2.1 motor contactors and 3RH2 auxiliary contactors (Size S00).

Benefits & Features

• Enhanced Component Lifespan: The RC element effectively suppresses induction voltage peaks, preventing premature failure of contactor coils and sensitive control electronics.
• Broad Voltage Range: Versatile compatibility with control voltages from 24 to 48V AC (50/60 Hz) and 24 to 70V DC.
• Seamless Integration: Designed for simple, clip-on mounting to the front of the compact SIRIUS 3RT2.1 and 3RH2 contactors (Size S00).
• Reliable Protection: Provides essential circuit protection in industrial automation and control panel applications.
• Genuine Siemens Quality: A trusted component of the modular SIRIUS system, ensuring optimal performance and safety standards.

Function and Application

The primary function of the 3RT2916-1CB00 RC suppressor is to divert and dissipate the energy generated by the contactor coil when the control voltage is switched off (known as an inductive kick or surge). Without this protection, the induced voltage can be many times the supply voltage, leading to:

1. Damage to Contactor Coil: Stress and breakdown of coil insulation.
2. Interference with Control Electronics: Malfunction of adjacent PLC outputs, relays, or other solid-state devices.

By using the parallel-connected RC element, the energy is safely absorbed, protecting your entire control circuit and maximizing system uptime.

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