Siemens SIRIUS 3RT2926-1ES00 Diode Combination Surge Suppressor, 30-250 V DC for 3RT2.2 Contactors Original Brand New

Overview: Essential Protection for DC Contactor Coils

The Siemens SIRIUS 3RT2926-1ES00 surge suppressor is a critical accessory designed to protect the control electronics and prolong the service life of Siemens’ 3RT2.2 series power contactors. It utilizes a reliable diode combination to effectively dampen voltage peaks, or surges, that are generated when the contactor coil is de-energized (switched off), particularly in DC control applications. This suppressor is specifically engineered for easy, space-saving clip-on mounting directly onto the contactor, maintaining the compact design of the SIRIUS modular system.

Key Benefit

• Extended Contactor Lifespan: Protects the sensitive insulation and components of the contactor coil from damaging inductive voltage spikes, reducing maintenance and replacement costs.
• System Reliability: Prevents transient overvoltages from propagating through the control circuit, safeguarding other connected electronic devices (like PLCs, I/O modules, and sensors).
• Easy Installation: Features a simple clip-on/plug-in design that integrates directly into the front of the 3RT2.2 contactor (Size S0) without affecting its external dimensions.
• Wide DC Compatibility: Operates across a versatile direct current (DC) control voltage range of 30 V to 250 V.

Application

This surge suppressor is essential for any industrial control application using Siemens 3RT2.2 DC-operated contactors (Size S0) where voltage peaks could compromise control equipment or cause system downtime. It is primarily used in:

• Machine Control Panels
• Automation Systems
• Motor Control Centers (MCCs)
• DC Switching Applications

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