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3RB2143-4EW1
Siemens 3RB2143-4EW1 available at EU Automation. Get in touch today for a quick price.
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Full 12-month warranty
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Siemens 3RB2143-4EW1 is a robust and reliable solid-state overload relay designed for motor protection. Part of the esteemed SIRIUS series, this relay is engineered to handle currents ranging from 25 to 100 A, making it suitable for a variety of industrial applications. It features a compact design with dimensions of 70 x 124 x 106 mm, allowing for easy integration into existing systems. The relay supports both manual and automatic reset functions and includes internal ground fault detection for enhanced safety. With a protection class of IP20, it is designed to withstand challenging environments. The 3RB2143-4EW1 is equipped with screw-type terminals for secure connections and is compatible with straight-through transformers for the main current circuit. Its adjustable trip class settings (5E, 10E, 20E, and 30E) provide flexibility in protecting motors from overload conditions. This relay is an ideal choice for those seeking a dependable solution for motor protection in industrial settings.
| Specification | Description |
|---|---|
| Part Number | 3RB2143-4EW1 |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Product Type | Overload Relay |
| Voltage Rating | 1000 V AC |
| Current Range | 25...100 A |
| Trip Class | Adjustable CLASS 5, 10, 20, 30 |
| Mounting Type | Stand-alone installation |
| Dimensions (W x H x D) | 70 x 124 x 106 mm |
| Protection Class | IP20 |
| Auxiliary Contacts | 1 Normally Closed (NC), 1 Normally Open (NO) |
| Connection Type | Screw-type terminals for auxiliary and control circuits; straight-through transformers for main current circuit |
| Operating Temperature | -25 to +60 °C |
| Storage Temperature | -40 to +80 °C |
| Humidity | 100% relative humidity during operation |
| Shock Resistance | 15g / 11 ms |
| Altitude | Up to 2000 m above sea level |
| Electromagnetic Compatibility | Complies with IEC 61000-4 standards for burst, surge, and electrostatic discharge |
| Description | The Siemens 3RB2143-4EW1 is a robust overload relay designed for motor protection. It offers adjustable trip classes and reliable performance in various industrial environments. With its compact design and high voltage rating, it is suitable for a wide range of applications. The relay features easy installation and secure connections, ensuring efficient operation and protection of electrical systems. |
What is the function of this Siemens overload relay?
This Siemens overload relay is designed to protect motors from overload conditions by interrupting the circuit when excessive current is detected.
What is the current range for this overload relay?
The overload relay has an adjustable current range of 25 to 100 A, making it suitable for various motor protection applications.
What are the dimensions of this overload relay?
The dimensions of the Siemens overload relay are 70 mm in width, 124 mm in depth, and 106 mm in height.
What type of mounting does this overload relay support?
This overload relay supports stand-alone installation and can be mounted in any position.
What is the protection class of this overload relay?
The overload relay has a protection class of IP20, providing finger-safe protection against electrical shock.
Does this overload relay have any auxiliary contacts?
Yes, the relay includes one normally closed (NC) and one normally open (NO) auxiliary contact.
What is the maximum operating voltage for this overload relay?
The maximum operating voltage for this overload relay is 1000 V AC.
Can this overload relay detect ground faults?
Yes, the Siemens overload relay includes internal ground fault detection capabilities.
What is the trip class range for this overload relay?
The trip class for this overload relay is adjustable between CLASS 5E, 10E, 20E, and 30E.
What type of terminals does this overload relay use for connections?
The relay uses screw-type terminals for auxiliary and control circuits, and straight-through transformers for the main current circuit.
- Motor protection in industrial applications
- Overload protection for electrical circuits
- Integration into control panels for machinery
- Use in automation systems for enhanced safety
- Protection of pumps and compressors from electrical faults
- Application in HVAC systems for motor safeguarding
- Ensuring operational reliability in conveyor systems
- Use in manufacturing plants for equipment protection
- Integration into power distribution systems for overload prevention
- Safeguarding of electrical motors in processing plants
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
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Customer reviews
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Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping.
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4 months ago
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