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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT1045-1AP00 |
| Alternative Part Number | 3RT10451AP00 |
| Manufacturer | Siemens |
| Product Type | Power Contactor |
| Poles | 3 Poles |
| Rated Operational Current AC-3 | 80 A |
| Rated Operational Voltage | 400 V |
| Control Supply Voltage AC | 230 V AC, 50 Hz |
| Size | S3 |
| Terminal Type | Screw Terminal |
| Insulation Voltage | Rated at 1,000 V |
| Degree of Pollution | 3 |
| Surge Voltage Resistance | Rated value 6 kV |
| Maximum Voltage for Safe Isolation | 690 V between coil and main contacts according to EN 60947-1 |
| Protection Class IP | IP20 on the front with cover / box terminal, IP00 of the terminal |
| Shock Resistance | At AC: 6.8g / 5 ms, 4g / 10 ms |
| Mechanical Service Life | Typical 10,000,000 operations |
| Operating Current at AC-1 | Up to 120 A at 400 V, 40 °C ambient temperature |
| Operating Power at AC-3 | 37 kW at 400 V |
| Mounting Type | Screw and snap-on mounting onto 35 mm and 75 mm standard mounting rail |
| Dimensions | Height: 146 mm, Width: 70 mm, Depth: 139 mm |
| Ambient Temperature | Operating: -25 to +60 °C, Storage: -55 to +80 °C |
| Installation Altitude | Up to 2,000 m above sea level |
| Short-Circuit Protection | Fuse gL/gG: 250 A for type of coordination 1, 160 A for type of coordination 2 |
| Auxiliary Circuit Contact Rating | AC-12 maximum 10 A, AC-15 at 230 V 6 A, at 400 V 3 A |
The Siemens 3RT1045-1AP00 is a robust power contactor designed to handle high current applications with ease. This three-pole contactor is rated for AC-3 80 A and can manage 37 kW at 400 V, making it an ideal choice for a wide range of industrial switching operations. Its coil operates at 230 V AC with a 50 Hz frequency, ensuring compatibility with standard industrial power supplies in the UK and other regions with similar electrical standards.
Crafted for durability, the 3RT1045-1AP00 boasts an impressive mechanical service life, capable of up to 10 million switching cycles. This longevity is a testament to the quality engineering and reliability that Siemens is known for. The contactor is part of the SIRIUS product line, which is synonymous with high performance and seamless integration into various control systems.
The device is designed with user safety in mind, featuring an IP20 protection class on the front, ensuring that the contactor is safeguarded against solid objects larger than 12.5 mm. Additionally, it has a degree of pollution rating of 3, indicating that it can withstand a certain level of harmful environmental factors.
Installation is straightforward, thanks to its screw and snap-on mounting options, which allow for quick and secure attachment to standard mounting rails. The contactor's dimensions are compact, with a width of 70 mm and a height of 146 mm, ensuring it doesn't take up excessive space in electrical cabinets or control panels.
The 3RT1045-1AP00 is a phased-out product, and while it continues to be supported, a preferred successor model is available for those looking for the latest advancements in contactor technology. However, for those in need of a reliable and time-tested solution, the Siemens 3RT1045-1AP00 remains a solid choice for controlling motors and loads efficiently and effectively in industrial settings.
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Frequently Asked Questions
What type of contactor is this?
This is a power contactor designed for switching an electrical power circuit, similar to a relay except with higher current ratings. It's suitable for heavy-duty applications.
Can this contactor be used for three-phase applications?
Yes, it is a 3-pole contactor, making it suitable for three-phase applications.
What is the rated operating current of this contactor at AC-3?
The rated operating current at AC-3 is 80 A.
What is the control supply voltage for this contactor?
The control supply voltage for this contactor at AC is 230 V at 50 Hz.
What is the insulation voltage rating of this contactor?
The insulation voltage rating of this contactor is 1,000 V.
What is the mechanical service life of this contactor?
The mechanical service life of the contactor is typically 10 million switching cycles.
What are the ambient operating temperature limits for this contactor?
The ambient operating temperature range is from -25°C to +60°C.
What is the maximum installation altitude for this contactor?
The maximum installation altitude for this contactor is 2,000 metres above sea level.
What are the dimensions of this contactor?
The dimensions are 70 mm in width, 146 mm in height, and 139 mm in depth.
What type of terminals does this contactor have for electrical connection?
This contactor is equipped with screw-type terminals for both the main and auxiliary circuits.
Is this contactor suitable for use in controlling motors?
Yes, it is suitable for motor control applications and is rated for AC-3 usage, which is typical for starting and stopping motors.
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