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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RB2283-4AA1 |
| Alternative Part Number | 3RB22834AA1 |
| Manufacturer | Siemens |
| Product Type | Evaluation Unit for Full Motor Protection |
| Rated Control Supply Voltage | 24 … 240 V AC/DC |
| Rated Insulation Voltage | 300 V |
| Adjustable Response Current | 0.3 … 630 A |
| Trip Class | CLASS 5, 10, 20 and 30 adjustable |
| Number of Poles | 3 |
| Mounting Type | Stand-alone installation |
| Mounting Position | Any |
| Dimensions | 45 x 95.4 x 111.2 mm |
| Connection Type | Screw-type terminals |
| Conductor Cross-Section | Solid: 0.5 ... 4 mm², Finely stranded with core end processing: 0.5 ... 2.5 mm² |
| Auxiliary Contacts | 2 NC contacts, 2 NO contacts |
| Contact Reliability | Acceptability for PLC control (17 V, 5 mA) |
| Operating Voltage (at AC-3) | Maximum 1,000 V |
| Service Power (at 400 V, 50 Hz) | 0.09 … 450 kW |
| Ambient Operating Temperature | -25 … +60 °C |
| Protection Class IP | IP20 |
| Compliance | EMC, For use in hazardous locations |
| Installation Altitude | Maximum 2,000 m above sea level |
| Resistance to Shock | 15g / 11 ms |
| Electrostatic Discharge Resistance | 6 kV contact discharge / 8 kV air discharge |
| Field-bound Parasitic Coupling | 10 V/m |
| Surge Voltage Resistance | 4 kV |
| Commodity Code | 85364900 |
The Siemens 3RB2283-4AA1 is a state-of-the-art evaluation unit designed for comprehensive motor protection. This unit is an integral component for industrial applications where motor safety and reliability are paramount. It is compatible with motor sizes S00 to S12 and offers adjustable trip classes 5, 10, 20, and 30, providing flexibility to cater to various motor protection requirements.
Crafted with precision, the 3RB2283-4AA1 features a solid-state overload relay that ensures consistent performance and durability. The unit is equipped with three poles for the main current circuit and has an adjustable response current range from 0.3 to 630 A, allowing for precise calibration according to the motor's specifications.
The auxiliary circuit of the unit includes two normally closed (NC) contacts and two normally open (NO) contacts, ensuring versatile integration into existing control systems. The operating current for the auxiliary contacts is rated at 6 A for AC-15 at voltages up to 230 V and 2 A for DC-13 at 24 V, making it suitable for a wide range of control applications.
With an insulation voltage rated at 300 V and surge voltage resistance of 4 kV, the 3RB2283-4AA1 is designed to withstand challenging electrical environments. The unit's protection class IP20 ensures that it is safeguarded against the ingress of solid objects, enhancing its longevity in industrial settings.
The evaluation unit's compact dimensions, with a height of 111 mm, width of 45 mm, and depth of 95 mm, allow for stand-alone installation in a variety of spaces without the need for extensive modifications. Its design also accommodates any mounting position, providing additional flexibility during installation.
The Siemens 3RB2283-4AA1 is a robust and reliable solution for motor protection, offering precise control and safeguarding against overload conditions. Its advanced features and adaptable design make it an essential component for maintaining the operational integrity of motors in industrial applications.
Commonly Asked Questions
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Frequently Asked Questions
What is the purpose of this evaluation unit?
The evaluation unit is designed for full motor protection, providing a solid-state overload relay function to safeguard motors from excessive current draw, phase failures, and other electrical anomalies.
Can this unit be used with different sizes of contactors?
Yes, it is compatible with contactors ranging from size S00 to S12, allowing for flexibility in various motor control applications.
What type of reset methods does this unit support?
The unit supports both manual and automatic reset methods, offering versatility in resetting the protection mechanism after a trip event.
What is the insulation voltage rating for this device?
The device has an insulation voltage rating of 300 V, with a degree of pollution 3, ensuring it can withstand the operational voltages typically found in industrial environments.
What are the ambient temperature limits for the operation of this unit?
The unit can operate within an ambient temperature range of -25°C to +60°C, making it suitable for a wide range of industrial settings.
Is the unit resistant to electrostatic discharge?
Yes, it is designed to resist electrostatic discharge with a 6 kV contact discharge and an 8 kV air discharge, in accordance with IEC 61000-4-2 standards.
What is the product's protection class?
The protection class for the front of the unit is IP20, indicating that it is protected against solid objects larger than 12.5 mm but not against water.
What is the maximum installation altitude for this unit?
The unit can be installed at altitudes up to 2,000 meters above sea level without derating.
How does the unit connect to auxiliary and control circuits?
It features removable terminals for auxiliary and control circuits with screw-type connections, facilitating easy installation and maintenance.
What are the dimensions of this evaluation unit?
The unit measures 45 mm in width, 95.4 mm in depth, and 111.2 mm in height, making it compact enough for standard industrial control panels.
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