The Siemens SIRIUS 3RT2028-1AP00 is a robust 3-pole power contactor engineered for the reliable switching of electrical loads in industrial environments. As part of the SIRIUS series, this size S0 device offers a rated operational current of 38A and is equipped with a 230V AC control coil, making it a versatile component for demanding electrical infrastructure and motor control systems.
This contactor is designed for high operational reliability and durability. Its compact S0 frame size allows for efficient space utilization within control cabinets, while the high-quality construction ensures consistent performance even under frequent switching cycles. The device is built to meet rigorous industrial standards, providing a dependable solution for managing power distribution and machine operation.
Advantages
The primary benefit of this contactor is its high switching capacity combined with a compact physical footprint, which facilitates easier integration into dense control panels. The device is designed for longevity and low maintenance, reducing downtime in critical industrial processes. Furthermore, the standardized S0 size ensures compatibility with a wide range of Siemens SIRIUS accessories, allowing for flexible system expansion and simplified installation procedures.
Suitable for
- Industrial motor control applications
- Switching of resistive and inductive loads
- Automation systems in manufacturing plants
- Heating and lighting control circuits
- Integration into control panels for machinery
When it may not be suitable
This contactor is designed specifically for AC control voltages and is not suitable for applications requiring DC control signals. Additionally, it should not be used in environments that exceed its specified current rating of 38A or in conditions where extreme environmental factors, such as high levels of corrosive dust or moisture, exceed the device's protection rating.
Key specifications
- Number of poles: 3
- Rated operational current: 38A
- Control coil voltage: 230V AC
- Size: S0
- Configuration: 1 NO and 1 NC auxiliary contacts
How to use
Installation should be performed by qualified personnel in accordance with local electrical regulations. The contactor is designed for mounting on standard DIN rails or via screw mounting within an enclosure. Ensure that the control circuit is connected to the A1 and A2 terminals using the correct 230V AC supply. Power cables should be connected to the main terminals, ensuring that all connections are tightened to the specified torque to prevent overheating and ensure secure electrical contact.
What to consider before purchase
- Verify that your control system provides a 230V AC signal.
- Ensure the 38A current rating is sufficient for your specific load requirements.
- Check available space in your control cabinet for the S0 frame size.
- Confirm that the auxiliary contact configuration meets your feedback or interlocking needs.
Usage recommendations
Regularly inspect the terminal connections for tightness and check for any signs of wear or debris accumulation to maintain optimal performance and safety throughout the service life of the contactor.
