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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT2028-1AP00 |
| Alternative Part Number | 3RT20281AP00 |
| Manufacturer | Siemens |
| Category | General Automation |
| Contact Configuration | 3 Normally Open (NO) |
| Rated Operational Current (AC-3) | 38 A at 400 V |
| Rated Operational Current (AC-1) | 50 A at 400 V |
| Control Supply Voltage | 230 V AC, 50 Hz |
| Power Rating | 48 kW |
| Number of Auxiliary Contacts | 1 Normally Open (NO), 1 Normally Closed (NC) |
| Insulation Voltage | Rated at 690 V |
| Degree of Pollution | 3 |
| Shock Resistance | Withstands 8.3g / 5 ms and 5.3g / 10 ms impulses |
| Surge Voltage Resistance | Rated at 6 kV |
| Mechanical Service Life | Typically 10 million switching cycles |
| Protection Class | IP20 on the front |
| Operating Temperature Range | -25 to +60 °C during operation |
| Storage Temperature Range | -55 to +80 °C |
| Installation Altitude | Up to 2,000 metres above sea level |
| Mounting | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022 |
| Dimensions (W x H x D) | 45 mm x 85 mm x 92 mm |
| Commodity Code | 853649 |
The Siemens 3RT2028-1AP00 is a robust power contactor designed to handle high current applications with ease. This contactor is part of the SIRIUS 3RT2 series, renowned for its reliability and performance in a variety of industrial settings. With a contact configuration of 3NO (3 normally open contacts), it is capable of switching motor loads up to 18.5 kW at 400 V in AC-3 usage category, making it a versatile choice for controlling motors and other electrical loads.
Rated for an operating current of 38 A at AC-3 400 V, the 3RT2028-1AP00 ensures efficient operation with minimal resistive losses. It operates at a control supply voltage of 230 V AC at 50 Hz, fitting seamlessly into standard industrial power systems in the UK and other regions with similar electrical standards.
The contactor's size S0 footprint allows for efficient use of space within electrical cabinets, while its screw-type terminals provide a secure and reliable connection for both the main and auxiliary circuits. The device is also designed with safety in mind, featuring finger-safe terminals to reduce the risk of electrical shock during installation and maintenance.
Engineered for durability, the Siemens 3RT2028-1AP00 boasts a mechanical operating life of up to 10 million cycles, ensuring long-term reliability in demanding industrial environments. Its compliance with international standards, including a protection class of IP20, makes it suitable for a wide range of applications across various sectors.
Whether you're looking to control pumps, compressors, or HVAC systems, the Siemens 3RT2028-1AP00 power contactor is an excellent choice for efficient and reliable operation.
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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 is suitable for high-power applications.
Can this contactor be used for three-phase motor applications?
Yes, it is suitable for three-phase motor applications and is rated for AC-3 usage, making it ideal for starting and stopping motors.
What is the rated operating voltage for this contactor?
The rated operating voltage for the main circuit at AC-3 is up to 690 V.
What is the insulation voltage rating of this contactor?
The insulation voltage rating is 690 V, which is the maximum permissible voltage for safe isolation.
What are the ambient operating temperature limits for this contactor?
The contactor can operate within an ambient temperature range of -25°C to +60°C during operation.
What is the mechanical service life of this contactor?
The mechanical service life of the contactor is typically 10 million switching cycles.
What type of terminals does this contactor have for electrical connection?
It features screw-type terminals for both the main current circuit and the auxiliary and control current circuit.
What is the protection class of the front side of this contactor?
The front side of the contactor is rated at IP20 for protection against touch and foreign objects.
Can this contactor be mounted on a DIN rail?
Yes, it can be mounted on a 35 mm standard mounting rail according to DIN EN 50022.
Does this contactor have auxiliary contacts?
Yes, it comes with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact for additional circuitry control.
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