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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT1046-1AL20 |
| Alternative Part Number | 3RT10461AL20 |
| Manufacturer | Siemens |
| Voltage Rating | 230 V ac |
| Power Rating | 114 kW |
| Current Rating | 120 A |
| Number of Poles | 3 Poles |
| Contactor Size | Size S3 |
| Operating Temperature Range | -25 … +60 °C |
| Insulation Voltage | Rated at 1,000 V |
| Pollution Degree | 3 |
| Installation Altitude | Up to 2,000 metres above sea level |
| Mechanical Operating Cycles | Typically 10,000,000 |
| Protection Class | IP20 on the front |
| Surge Voltage Resistance | Rated value 6 kV |
| Control Circuit Voltage Type | AC |
| Operating Current at AC-1 | 120 A at 400 V (at 40 °C ambient temperature) |
| Operating Current at AC-3 | 95 A at 400 V |
| Operating Current at AC-4 | 80 A at 400 V |
| Commodity Code | 853649 |
The Siemens 3RT1046-1AL20 is a robust power contactor designed to handle high power switching applications with ease. Engineered for reliability and efficiency, this contactor is a perfect fit for controlling motors and managing loads in industrial environments. With a 230 V ac operating voltage and an impressive 114 kW switching capacity at 400 V, it can comfortably manage 120 A, making it suitable for a wide range of demanding applications.
This three-pole contactor is part of the SIRIUS product family, known for its high-quality construction and dependable performance. The size S3 frame of the 3RT1046-1AL20 ensures it is compact enough for standard installations while still delivering the power needed for heavy-duty operations. The screw terminal connections provide a secure and reliable means of integrating the contactor into existing systems.
The contactor's design includes features that ensure it can operate effectively within a broad range of ambient temperatures, making it versatile for various industrial settings. Its mechanical service life is rated at millions of operating cycles, which speaks to its durability and the long-term value it offers.
With its combination of power, reliability, and Siemens' engineering excellence, the 3RT1046-1AL20 is an essential component for industrial professionals looking to optimise their operations with a contactor that won't let them down.
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Frequently Asked Questions
What are the main characteristics of this power contactor?
This Siemens power contactor is designed for switching motor loads and has an operating current of 95 A at AC-3, with a power rating of 45 kW at 400 V. It features a 230 V AC control supply voltage and is a 3-pole device with size S3 screw terminals.
Can this contactor be used in high-altitude installations?
Yes, the contactor can be used in installations up to 2000 metres above sea level without derating.
What is the insulation voltage rating for this contactor?
The insulation voltage rating for the contactor is 1000 V, which is the rated value for ensuring safe operation.
What is the mechanical service life of this contactor?
The mechanical service life of the 3RT1046-1AL20 contactor is typically 10 million operating cycles, ensuring long-term reliability.
What are the ambient temperature limits for operating this contactor?
The contactor can operate within an ambient temperature range of -25 to +60 degrees Celsius.
What type of terminals does this contactor have?
This contactor is equipped with screw terminals for secure and reliable connections.
What is the degree of protection for the terminals of this contactor?
The terminals of this contactor have a protection class of IP00, which means they are not protected against the ingress of solid objects or water and should be installed in an appropriate enclosure.
What is the size classification of this contactor?
This contactor is classified as size S3 according to the manufacturer's product range.
What is the surge voltage resistance of this contactor?
The surge voltage resistance of this contactor is rated at 6 kV.
Is this contactor suitable for three-phase motor control?
Yes, this contactor is suitable for three-phase motor control, with three normally open (NO) main contacts for switching the motor circuit.
