Siemens 3RT2916-1LP00 Surge Suppressor, 150-250V DC For 3RT2.1 & 3RH2 Contactors Original Brand New

Overview

The Siemens 3RT2916-1LP00 is a high-performance surge suppressor (or interference suppression diode) specifically designed for the SIRIUS series of industrial switching devices. This crucial accessory protects contactor and auxiliary contactor coils from damaging voltage peaks (inductive surges) that occur when the coil circuit is opened. It is an essential component for ensuring the longevity and reliability of your control system, particularly in DC applications.

Key Features & Technical Specification

• Product Number: 3RT2916-1LP00
• Accessory Type: Surge Suppressor / Interference Suppression Diode
• Suppression Type: Diode
• Integrated Feature: LED (Light Emitting Diode) for clear status indication
• Operating Voltage: 150-250 V DC (Direct Current)
• Compatibility: Designed for Siemens SIRIUS 3RT2 Contactor Relays (Size S00) and 3RH2 Auxiliary Contactors (Size S00).
• Contactor Size: S00
• Mounting: Simple and secure clip-on mounting directly onto the contactor.
• Brand: Siemens SIRIUS

Benefit

• Enhanced Equipment Protection: Effectively clamps down on high inductive voltage peaks, preventing damage and premature failure of contactor coils and sensitive control electronics.
• Increased System Reliability: Reduces electromagnetic interference (EMI) on the control circuit, ensuring stable and reliable operation of the entire control system.
• Visual Diagnostics: The built-in LED indicator provides immediate, clear visual confirmation of the surge suppressor’s operating status, simplifying troubleshooting and maintenance.
• Easy Installation: Features a quick and tool-free clip-on design for fast integration with SIRIUS 3RT2.1 motor contactors and 3RH2 auxiliary contactors.
• Industry Standard: Part of the trusted Siemens SIRIUS modular system, guaranteeing quality and seamless compatibility.

Function

When a DC contactor coil is de-energized, the collapsing magnetic field generates a high-voltage inductive spike (back EMF). The 3RT2916-1LP00 suppression diode is connected in parallel with the contactor coil to shunt this excessive energy. It diverts the surge current away from other sensitive components, dissipating the energy and keeping the coil voltage within safe limits. The integrated LED illuminates when the coil is energized, offering a simple way to verify the control power is present.

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