The Siemens 3RT2936-1CB00 is a genuine SIRIUS surge suppressor RC element designed to protect contactor coils and control circuits from harmful voltage spikes generated during switching operations. This compact accessory helps improve the reliability and service life of contactors by reducing transient overvoltages and electromagnetic interference (EMI) in industrial control systems. It is specifically designed for use with Siemens SIRIUS 3RT2 contactors and 3RH2 auxiliary contactors.
The suppressor is suitable for control voltages of 24–48V AC (50/60 Hz) and 24–70V DC, making it ideal for a wide range of motor control, automation, and industrial switching applications. When connected across the contactor coil, it absorbs switching surges and minimizes voltage peaks that could otherwise damage PLC outputs, relays, timers, sensors, and electronic controllers.
Designed for seamless integration with Siemens SIRIUS switching devices, the 3RT2936-1CB00 features a compact clip-on design that enables quick installation without additional wiring modifications. Its space-saving construction makes it particularly suitable for control panels, motor control centers (MCCs), automation cabinets, and OEM machinery.
By suppressing coil-generated transients, the RC element helps prevent nuisance tripping, reduces electrical noise, minimizes contact wear, and enhances overall system stability. This contributes to improved operational reliability and reduced maintenance requirements in demanding industrial environments.
Manufactured according to Siemens quality standards, the 3RT2936-1CB00 Surge Suppressor offers dependable long-term performance and full compatibility with Siemens SIRIUS contactors and auxiliary relays. It is commonly used in manufacturing plants, process industries, HVAC systems, water treatment facilities, machine-building projects, and industrial automation systems.
| Specification | Details |
|---|---|
| Product Name | Surge Suppressor RC Element |
| Brand | Siemens |
| Series | SIRIUS 3RT29 |
| Model Number | 3RT2936-1CB00 |
| SKU | 3RT2936-1CB00 |
| Product Type | RC Surge Suppressor |
| Suppressor Design | RC Element |
| Rated AC Voltage | 24–48V AC |
| Rated DC Voltage | 24–70V DC |
| Frequency | 50/60 Hz |
| Voltage Type | AC/DC |
| Compatible Contactor Series | Siemens SIRIUS 3RT2 |
| Compatible Auxiliary Contactors | Siemens 3RH2 |
| Suitable Contactor Size | S2 |
| Mounting Type | Clip-On |
| Function | Coil Surge Protection |
| Application | EMI Reduction & Transient Voltage Suppression |
| Product Family | Siemens SIRIUS Accessories |
| Compliance | RoHS, CE |
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