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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT1044-1AP04 |
| Alternative Part Number | 3RT10441AP04 |
| Manufacturer | Siemens |
| Product Type | Power Contactor |
| Contact Configuration | 3 Normally Open (NO) |
| Rated Operational Current | AC-3 65 A, AC-4 55 A |
| Rated Operational Voltage | 400 V |
| Control Supply Voltage | 230 V AC, 50 Hz |
| Auxiliary Contacts | 2 Normally Open (NO) + 2 Normally Closed (NC) |
| Size | S3 |
| Connection Type | Screw Terminal |
| Degree of Protection | IP20 |
| Installation Altitude | Up to 2,000 m above sea level |
| Ambient Operating Temperature | -25 … +60 °C |
| Mechanical Operating Cycles | 10,000,000 typical for contactor, 5,000,000 typical for contactor with electronics-compatible auxiliary switch block |
| Insulation Voltage (Rated) | 1,000 V |
| Surge Voltage Resistance | Rated value 6 kV |
| Pollution Degree | 3 |
| Commodity Code | 853649 |
The Siemens 3RT1044-1AP04 Power Contactor is a robust and reliable switching device designed for controlling motors and managing loads in industrial applications. This contactor is part of the SIRIUS product family, known for its high performance and compatibility with a wide range of systems.
With a current rating of 65 A and the capability to handle motor power of up to 30 kW at 400 V in AC-3 usage categories, this contactor is well-suited for demanding tasks. It operates at a control supply voltage of 230 V AC, 50 Hz, making it ideal for integration into existing power networks in the UK and other regions with similar electrical standards.
The contactor features a 3-pole design and includes 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, providing flexibility for various control circuit configurations. The screw terminal connection ensures a secure and durable connection, which is vital for consistent performance and longevity.
Designed with a size S3 frame, the 3RT1044-1AP04 contactor is compact enough to fit in standard control cabinets while offering the robustness needed for industrial environments. It has an IP20 protection rating on the front, indicating a basic level of protection against solid objects.
This contactor is engineered to deliver high mechanical endurance, with up to 10 million operating cycles, ensuring a long service life and reducing the need for frequent replacements. Its straightforward design allows for easy installation and maintenance, making it a practical choice for a variety of industrial applications, from manufacturing to infrastructure.
The Siemens 3RT1044-1AP04 Power Contactor is a testament to Siemens' commitment to quality, reliability, and innovation in industrial control technology.
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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 a rating of AC-3 65 A, and it can handle 30 kW at 400 V. It operates with a control voltage of 230 V AC at 50 Hz and features 2 normally open (NO) and 2 normally closed (NC) contacts. It's classified as Size S3 and uses a screw terminal connection.
Can this contactor be used in high-altitude installations?
Yes, the contactor can be used at installation altitudes up to 2,000 meters above sea level without derating.
What is the degree of protection provided by the front of the contactor?
The front of the contactor is rated at IP20, providing protection against solid objects larger than 12.5 mm but not against liquids.
What is the mechanical service life of the contactor?
The mechanical service life of the contactor is typically 10 million operating cycles, ensuring long-term reliability in various applications.
What is the ambient temperature range for operating this contactor?
The contactor can operate within an ambient temperature range of -25 to +60 degrees Celsius, making it suitable for a variety of environmental conditions.
What type of connection does this contactor use for the main circuit?
The contactor uses a screw terminal connection for the main circuit, which provides a secure and reliable means of connecting the power cables.
How many auxiliary contacts does this contactor have?
This contactor comes with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts for additional control functionality.
Is this contactor suitable for controlling motors?
Absolutely, this contactor is designed for motor control applications and is rated for AC-3 usage, which is typical for starting and stopping motors.
What is the insulation voltage rating of this contactor?
The insulation voltage rating of the contactor is 1,000 V, which indicates the voltage the contactor can withstand without risk of electrical breakdown.
Can this contactor be used for both AC and DC applications?
While primarily designed for AC applications, the contactor also has ratings for DC-1 and DC-3 usage, allowing for some DC applications as well.
