The Siemens 3RT2926-1BC00 is a genuine SIRIUS varistor surge suppressor designed to protect contactor coils and associated control circuits from harmful voltage spikes generated during switching operations. This side-mounted accessory is specifically engineered for Siemens SIRIUS 3RT2.2 Size S0 contactors, helping improve system reliability and extending the service life of automation components.
Designed for 24–48V AC (50/60 Hz) and 24–70V DC control circuits, the 3RT2926-1BC00 absorbs transient voltage peaks that occur when contactor coils are energized or de-energized. This protection helps safeguard PLC outputs, timers, relays, sensors, and electronic controllers from switching-induced electrical stress and potential damage.
The suppressor utilizes varistor technology, which effectively limits overvoltage transients while reducing electromagnetic interference (EMI) in industrial control systems. By minimizing electrical noise, it enhances switching reliability, prevents nuisance tripping, and improves overall control system stability.
Featuring a compact clip-on side-mount design, the 3RT2926-1BC00 can be installed quickly and securely without additional wiring modifications. Its space-saving construction makes it ideal for motor control centers (MCCs), industrial automation panels, OEM machinery, HVAC systems, and manufacturing facilities where panel space is limited.
The device is designed for reliable operation in demanding industrial environments, with an operating temperature range of -25°C to +60°C and support for any mounting position. Manufactured according to Siemens quality standards, it delivers dependable long-term performance and seamless compatibility with Siemens SIRIUS motor control products.
As part of the trusted Siemens SIRIUS 3RT29 accessories range, the 3RT2926-1BC00 Varistor Surge Suppressor provides effective coil protection, reduced maintenance requirements, and enhanced operational reliability for industrial control and automation applications.
| Specification | Details |
|---|---|
| Product Name | Varistor Surge Suppressor |
| Brand | Siemens |
| Series | SIRIUS 3RT29 |
| Model Number | 3RT2926-1BC00 |
| SKU | 3RT2926-1BC00 |
| Product Type | Surge Suppressor |
| Suppressor Design | Varistor |
| Rated AC Voltage | 24–48V AC |
| Rated DC Voltage | 24–70V DC |
| Frequency | 50/60 Hz |
| Voltage Type | AC/DC |
| Suitable For | Siemens SIRIUS 3RT2.2 Contactors |
| Contactor Size | S0 |
| Mounting Method | Side Mount / Clip-On |
| Function | Coil Surge Protection |
| Application | Transient Voltage Suppression & EMI Reduction |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +80°C |
| Mounting Position | Any |
| Technology | Varistor |
| Approvals | CE, UL, CSA |
| Product Family | Siemens SIRIUS Accessories |
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