The Siemens 3RT2936-1ER00 is a genuine SIRIUS surge suppressor diode assembly designed to protect DC-operated contactor coils from harmful switching surges and voltage spikes. This accessory is specifically engineered for Siemens SIRIUS 3RT2 series contactors, helping to improve the reliability and lifespan of control circuits by reducing transient voltages generated when the contactor coil is de-energized.
The 3RT2936-1ER00 features a diode combination suppressor designed for 24V DC control circuits. When installed across the contactor coil, it safely dissipates the back electromotive force (EMF) generated during switching operations, protecting sensitive devices such as PLC outputs, relays, timers, electronic controllers, and automation equipment from voltage surges.
Designed for compatibility with Siemens 3RT2.3 and 3RT2.4 contactors (Sizes S2 and S3), the suppressor provides seamless integration without requiring modifications to the existing control circuit. Its compact design allows quick installation directly onto the contactor, making it an ideal accessory for industrial automation and motor control applications.
By reducing switching transients, the 3RT2936-1ER00 Diode Assembly helps prevent unintended controller faults, extends the service life of switching devices, minimizes electromagnetic interference (EMI), and improves overall system stability. This makes it particularly suitable for motor control centers (MCCs), control panels, process industries, machine-building applications, HVAC systems, and factory automation projects.
Manufactured according to Siemens quality standards, the 3RT2936-1ER00 delivers dependable performance, long operational life, and full compatibility with Siemens SIRIUS switching devices. It is commonly used as a preventive protection accessory in DC control systems where reliable contactor operation is essential.
| Specification | Details |
|---|---|
| Product Name | Surge Suppressor Diode Assembly |
| Brand | Siemens |
| Series | SIRIUS |
| Model Number | 3RT2936-1ER00 |
| SKU | 3RT2936-1ER00 |
| Product Type | Diode Suppressor Module |
| Suppressor Design | Diode Combination |
| Rated Control Voltage | 24V DC |
| Voltage Type | DC |
| Function | Coil Surge Protection |
| Compatible Contactor Series | Siemens SIRIUS 3RT2 |
| Suitable Contactor Sizes | S2, S3 |
| Compatible Contactors | 3RT2.3 and 3RT2.4 Series |
| Mounting Type | Direct Contactor Mounting |
| Application | Suppression of Coil Switching Surges |
| Protection Function | Back EMF & Transient Voltage Protection |
| Industrial Applications | MCC Panels, Automation Systems, Control Panels |
| Product Family | Siemens SIRIUS Accessories |
| RoHS Compliance | Yes |
| Country of Origin | Czech Republic |
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