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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT1045-1BB40 |
| Alternative Part Number | 3RT10451BB40 |
| Manufacturer | Siemens |
| Category | General Automation |
| Description | Siemens Power Contactor, optimised for switching motors and controlling power circuits. |
| Contactor Type | 3-pole |
| Rated Operational Current | AC-3 80 A (at 400 V) |
| Control Supply Voltage | 24 V DC |
| Size | S3 |
| Terminal Type | Screw terminal |
| Rated Operational Power | 37 kW (at 400 V, AC-3) |
| Protection Class | IP20 |
| Degree of Pollution | 3 |
| Installation Altitude | Up to 2,000 metres above sea level |
| Ambient Operating Temperature | -25°C to +60°C |
| Mechanical Operating Cycles | Typically 10,000,000 |
| Number of Main Contacts | 3 NO (Normally Open) |
| Commodity Code | 853649 |
The Siemens 3RT1045-1BB40 is a robust power contactor designed to handle high current applications with ease. This three-pole contactor is engineered to manage AC-3 loads up to 80 A and motor control tasks up to 37 kW at 400 V in a variety of industrial settings. Its compact size S3 frame makes it suitable for space-conscious installations, while the screw terminal connections ensure a secure and reliable electrical connection.
Crafted for durability, the 3RT1045-1BB40 boasts an impressive mechanical service life, capable of up to 10 million switching cycles, making it a reliable choice for long-term use. The contactor operates within a wide ambient temperature range from -25 to +60 °C, ensuring consistent performance even in demanding environments.
The device is equipped with three normally open (NO) main contacts, ensuring efficient operation and straightforward integration into existing systems. With a rated insulation voltage of 1,000 V and a surge voltage resistance of 6 kV, it offers a high level of protection for both the contactor itself and the connected equipment.
Designed with a focus on safety and reliability, the 3RT1045-1BB40 contactor is a testament to Siemens' commitment to quality and performance in industrial automation components. Whether used in manufacturing, process control, or other heavy-duty applications, this contactor is an excellent choice for professionals seeking a high-performing solution to manage electrical loads effectively.
Commonly Asked Questions
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Frequently Asked Questions
What type of contactor is this Siemens power contactor?
This Siemens power contactor is a 3-pole contactor designed for AC-3 applications, capable of handling 80 A and controlling motors up to 37 kW at 400 V ac.
Can this contactor be used for high-frequency switching applications?
The contactor is suitable for general-purpose switching but for high-frequency switching applications, it's important to refer to the datasheet for the specific operating current and mechanical endurance ratings.
What is the control voltage for this contactor?
The control voltage for this contactor is 24 V DC, which is the standard for the coil operation.
What are the dimensions of this contactor?
The exact dimensions can be found in the datasheet, but it is a Size S3 contactor, which is a standard size within the Siemens contactor range.
Is this contactor suitable for use in a marine environment?
While the contactor has a robust design, suitability for marine environments would depend on specific certifications and approvals. Please check the product approvals section in the datasheet for detailed information.
What is the insulation voltage rating of this contactor?
The insulation voltage rating of this contactor is 1000 V, which is the nominal value for safe operation.
What is the mechanical service life of this contactor?
The mechanical service life of the contactor is typically around 10 million switching cycles, indicating its durability and longevity in applications.
What type of terminals does this contactor have?
This contactor is equipped with screw terminals, which are designed for secure and reliable wire connections.
What is the operating temperature range for this contactor?
The operating temperature range for this contactor is from -25 to +60 degrees Celsius, ensuring reliable operation in a wide range of environmental conditions.
How can I find more detailed technical information about this contactor?
For more detailed technical information, including certifications, electrical endurance, and switching frequency, please refer to the manufacturer's datasheet and product documentation.
Part conditions explained
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