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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RF2920-0FA08 |
| Alternative Part Number | 3RF29200FA08 |
| Manufacturer | Siemens |
| Product Type | Solid State Contactor |
| Load Monitoring | Basis Current Range |
| Current Rating | 20 A |
| Control Voltage Range | 18 to 30 V dc |
| Control Type | DC |
| Operating Frequency | 50/60 Hz |
| Insulation | IP20 |
| Blocking Voltage | Maximum permissible blocking voltage of 1200 V |
| Operating Current | Minimum operating current of 500 mA |
| Control Supply Voltage | Rated value at DC 30 V, range 4 to 30 V dc |
| Control Current | At minimum control supply voltage at DC 18 mA, rated value 20 mA |
| Operating Voltage | At AC 50 Hz rated value 48 to 600 V, at AC 60 Hz rated value 48 to 600 V |
| Operating Range | Relative to the operating voltage at AC 50 Hz 40 to 660 V, at AC 60 Hz 40 to 660 V |
| Surge Current Resistance | Rated value 600 A |
| I2t Value | Maximum 1800 A²·s |
| Commodity Code | 853649 |
| Special Features | Zero-point switching, designed for use in industrial applications with reliable solid-state technology |
The Siemens 3RF2920-0FA08 solid state contactor is a robust and reliable component designed for efficient load monitoring and control in industrial applications. This part, with a basic current range of 20 A, is engineered to handle a control voltage range of 18 to 30 V dc, making it versatile for various DC control systems. The contactor operates at a frequency of 50/60 Hz and is equipped with an IP20 protection rating, ensuring it is safeguarded against solid objects larger than 12.5 mm but not against water.
Crafted for zero-point switching, the 3RF2920-0FA08 minimises electrical noise and extends the life of the system by reducing stress on the contactor during operation. Its insulation voltage is rated at 600 V, and it can withstand a blocking voltage of up to 1200 V, highlighting its capacity to handle high-voltage applications with ease.
The compact design of this solid state contactor allows for efficient use of space within control cabinets, and its clip-on mounting feature facilitates easy installation onto standard mounting rails. The contactor's screw terminals provide a secure and reliable connection for both the main and control circuits.
Ideal for a wide range of industrial applications, the Siemens 3RF2920-0FA08 is a testament to Siemens' commitment to quality, durability, and performance in automation technology. It is a suitable choice for professionals seeking a dependable solution for load monitoring and control in their electrical systems.
Commonly Asked Questions
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Frequently Asked Questions
What type of device is the Siemens Solid State Contactor?
The Siemens Solid State Contactor is an electronic switching device that is used for controlling power to a load without the use of mechanical contacts. It is designed for fast and reliable switching operations.
Can the Siemens Solid State Contactor be used with DC control circuits?
Yes, the Siemens Solid State Contactor is compatible with DC control circuits, specifically with a control supply voltage range of 18 to 30 V dc.
What is the current rating for this solid state contactor?
The current rating for this solid state contactor is 20 A, which is suitable for a variety of medium power applications.
What is the operating frequency range of the Siemens Solid State Contactor?
The operating frequency range of the Siemens Solid State Contactor is 50/60 Hz, making it versatile for use in different power supply regions.
What is the insulation voltage rating of this contactor?
The insulation voltage rating of the Siemens Solid State Contactor is 600 V, providing a good level of insulation for safety and reliability.
What are the ambient temperature limits for operating this contactor?
The ambient temperature range for operating the Siemens Solid State Contactor is between -25°C and +60°C, ensuring stable performance in various environmental conditions.
What is the IP rating of the Siemens Solid State Contactor?
The IP rating of the Siemens Solid State Contactor is IP20, indicating protection against solid objects larger than 12.5 mm but not against liquids.
How can this solid state contactor be mounted?
This solid state contactor is designed for clip-on mounting, which allows for easy installation onto DIN rails or mounting plates.
Does the Siemens Solid State Contactor have auxiliary contacts?
No, this model of the Siemens Solid State Contactor does not have auxiliary contacts. It is designed primarily for main circuit switching.
What is the derating temperature for this contactor?
The derating temperature for the Siemens Solid State Contactor is 40°C. Above this temperature, the current carrying capacity of the contactor will need to be reduced to prevent overheating.
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