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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RB2153-4FC2 |
| Alternative Part Number | 3RB21534FC2 |
| Manufacturer | Siemens |
| Product Type | Solid-state overload relay |
| Number of Poles | 3 Poles |
| Contact Configuration | 1NO/NC (1 Normally Open, 1 Normally Closed) |
| Rated Control Supply Voltage | 230 V |
| Adjustable Current Setting Range | 50 to 200 A |
| Mounting Type | Flange Mount |
| Dimensions | 120 x 155 x 119 mm |
| Insulation Voltage | Rated at 1,000 V with degree of pollution 3 |
| Surge Voltage Resistance | Rated value 8 kV |
| Protection Class | IP20 |
| Ambient Operating Temperature | -25 to +60 °C |
| Storage Temperature | -40 to +80 °C |
| Relative Humidity | Up to 100% during operation |
| Electromagnetic Compatibility | Complies with IEC standards for EMC |
| Tripping Class | CLASS 5, 10, 20 and 30 adjustable |
| Electrical Connection | Main current circuit: busbar connection, Auxiliary and control circuit: screw-type terminals |
| Product Approvals | EMC, suitable for use in hazardous locations as per ATEX directive |
The Siemens 3RB2153-4FC2 is a robust and reliable solid-state overload relay designed for motor protection. This component is essential for industrial applications where motor overload protection is critical. With a current adjustment range of 50 to 200 A, it is suitable for a variety of motor sizes, ensuring versatility across multiple platforms.
Crafted for size S6 contactors, the 3RB2153-4FC2 features three poles and offers both manual and automatic reset options, providing flexibility in operation. The inclusion of an internal earth fault detection adds an extra layer of protection, enhancing the safety of your motor control systems.
The overload relay is designed for flange mounting, making it straightforward to install within your existing setup. Its dimensions are 120 x 155 x 119 mm, compact enough to fit in various environments while still delivering the high performance expected from Siemens products.
The auxiliary circuit boasts screw-type terminals, ensuring secure and reliable connections. The main circuit connection is facilitated through a busbar, which simplifies the installation process and provides a robust electrical link.
This overload relay is engineered to withstand challenging industrial environments, with an operational temperature range of -25 to +60 °C and a high level of resistance to shock and vibration. It is also designed to handle impulse voltages up to 8 kV, showcasing its durability and resilience.
The Siemens 3RB2153-4FC2 is a testament to Siemens' commitment to quality, offering a dependable solution for motor protection that meets the demands of modern industrial applications.
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Frequently Asked Questions
What is the function of this overload relay?
The Siemens overload relay is designed to protect motors from overloads by interrupting the electrical supply when the current exceeds a preset level, thus preventing potential damage to the motor.
Can this overload relay be used with any size of contactor?
This overload relay is specifically designed to be compatible with size S6 contactors. It should be used with contactors that match this specification for optimal performance.
What type of reset mechanisms are available with this overload relay?
The overload relay comes with manual and automatic reset options, providing flexibility in resetting the device after an overload trip.
Is there a ground fault detection feature in this overload relay?
Yes, the overload relay includes an internal earth fault detection feature to enhance motor protection by detecting ground faults.
What are the installation requirements for this overload relay?
The overload relay can be mounted in any position and can be installed as a standalone unit or mounted onto a contactor. It is designed for easy integration into various setups.
What is the range of operating temperatures for this overload relay?
The operating temperature range for this overload relay is between -25°C and +60°C, ensuring reliable performance in a variety of environmental conditions.
What are the dimensions of this overload relay?
The dimensions of the overload relay are 120 mm in width, 155 mm in depth, and 119 mm in height, making it a compact solution for motor protection.
What type of connections does this overload relay support?
The overload relay supports busbar connections for the main current circuit and screw-type terminals for the auxiliary and control current circuit.
How can I adjust the trip class of this overload relay?
The trip class of the overload relay is adjustable, with settings for CLASS 5E, 10E, 20E, and 30E, allowing for customisation based on the motor's requirements.
What is the insulation voltage rating for this overload relay?
The insulation voltage rating for this overload relay is 1,000 V with a degree of pollution 3, providing a high level of insulation and safety.
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