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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT1046-1BB44 |
| Alternative Part Number | 3RT10461BB44 |
| Manufacturer | Siemens |
| Product Type | Power Contactor |
| Poles | 3 Pole, 3P-3NO |
| Rated Operational Voltage | 400 V |
| Rated Operational Current | 120 A |
| Power Rating | 45 kW |
| Contactor Size | Size S3 |
| Connection Type | Screw Connection |
| Number of Auxiliary Contacts | 2 NO + 2 NC |
| Rated Control Supply Voltage | DC 24 V |
| Operating Frequency at AC-1 | Maximum 900 1/h |
| Operating Frequency at AC-3 | Maximum 850 1/h |
| Mechanical Operating Cycles | Typical 10,000,000 |
| Insulation Voltage | Rated value 1,000 V |
| Degree of Pollution | 3 |
| Protection Class IP | IP20 |
| Installation Altitude | Maximum 2,000 m above sea level |
| Ambient Operating Temperature | -25 … +60 °C |
| Shock Resistance | At DC 6,8g / 5 ms, 4g / 10 ms |
| Surge Voltage Resistance | Rated value 6 kV |
| Contact Reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
The Siemens 3RT1046-1BB44 Power Contactor is a robust and reliable switching device designed for controlling power circuits in industrial applications. This three-pole contactor is engineered to handle significant electrical loads, making it an ideal choice for managing motors and other heavy-duty electrical equipment.
Crafted with precision, the contactor boasts a high operating current capacity of 120 A at AC-1, 400 V, and can efficiently manage AC-3 category loads up to 95 A at 400 V. Its impressive power handling capabilities are evident with its ability to control 45 kW motors at 400 V, ensuring smooth operation in demanding environments.
The contactor features a DC control circuit with a 24 V rated control supply voltage, providing a stable and secure low-voltage operation for the coil. The inclusion of 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts allows for flexible configuration in various control circuits, enhancing its adaptability to different operational requirements.
Designed with a size S3 frame, the contactor ensures a compact footprint while maintaining its high-performance characteristics. The screw connection terminals offer a secure and reliable connection, facilitating easy installation and maintenance.
With a mechanical service life of up to 10 million operating cycles, the Siemens 3RT1046-1BB44 Power Contactor is built to last, offering long-term reliability and reduced maintenance needs. Its operational temperature range from -25 to +60 °C and an installation altitude capability of up to 2000 metres above sea level, make it suitable for a wide range of environmental conditions.
Overall, the Siemens 3RT1046-1BB44 Power Contactor is a high-quality component that provides efficient and dependable performance for industrial power management tasks. Its robust construction and versatile features make it a valuable addition to any electrical control system.
Commonly Asked Questions
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Frequently Asked Questions
What are the main characteristics of this power contactor?
This power contactor is a 3-pole device with 3 normally open (NO) contacts, rated for AC-3 95 A and 45 kW at 400 V. It has a control supply voltage of 24 V DC and includes 2 NO + 2 NC auxiliary contacts. It's designed for screw terminal connections and is part of the SIRIUS product family.
Can this contactor be used in high-altitude installations?
Yes, this contactor can be used at installation altitudes up to 2,000 metres above sea level without derating.
What is the typical mechanical service life of this contactor?
The typical mechanical service life of the contactor is around 10 million operating cycles, ensuring long-term reliability for your applications.
What is the operating temperature range for this contactor?
The operating temperature range for this contactor is between -25°C and +60°C, making it suitable for a variety of environmental conditions.
What type of protection does the contactor offer?
The contactor offers IP20 protection on the front, ensuring that it is protected against solid objects larger than 12.5 mm but not against water.
How does the contactor handle shock and vibration?
The contactor is designed to withstand shock resistance at rectangular impulse and sine pulse at DC, as specified in its technical data, ensuring robust performance in environments with vibration and shock.
What are the dimensions of this contactor?
For specific dimensions of the contactor, please refer to the datasheet or contact us directly for detailed information.
Is this contactor suitable for use in both AC and DC applications?
This contactor is primarily designed for AC applications, with specific ratings for AC-1, AC-2, AC-3, and AC-4 utilisation categories. It also has a DC control supply voltage and can switch DC loads within its specified ratings.
What is the insulation voltage rating for this contactor?
The insulation voltage rating for this contactor is 1,000 V, which is the rated value for ensuring safe operation and isolation.
Can this contactor be used for motor control applications?
Yes, this contactor is suitable for motor control applications, with an AC-3 rating of 45 kW at 400 V, making it capable of handling the demands of starting and stopping motors.
