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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RN1010-2CB00 |
| Alternative Part Number | 3RN10102CB00 |
| Manufacturer | Siemens |
| Type of Voltage | AC/DC |
| Supply Voltage Frequency | 50/60 Hz |
| Control Supply Voltage | 24 V at 50 Hz / 60 Hz for AC, 24 V for DC |
| Number of Measuring Circuits | 1 |
| Number of NC Contacts | 1 (for auxiliary contacts) |
| Number of NO Contacts | 1 (for auxiliary contacts) |
| Measurable Temperature Range | 60°C to 180°C |
| Product Function | Self-reset |
| Ambient Operating Temperature | -25°C to +60°C |
| Mechanical Design | Spring-loaded terminals |
| Display Type | LED |
| Protection Class | IP20 |
| Dimensions (Width x Height x Depth) | 22.5 mm x 94 mm x 91 mm |
| Approvals | General Product Approval, EMC, For use in hazardous locations, Test Certificates, Declarations of Conformity |
| Designation | According to DIN EN 61346-2 (K) and DIN 40719 extendable after IEC 204-2 / IEC 750 (K) |
The Siemens 3RN1010-2CB00 is a thermistor motor protection unit designed to safeguard motors from overheating, ensuring efficient operation and longevity. This compact device, measuring 22.5 x 86 x 96 mm, is part of the 3RN1 series and operates with a control supply voltage of 24 V AC/DC. It is equipped with spring-loaded terminals for a secure electrical connection and features an LED display for clear indication of status.
With the capability to handle one measuring circuit, the unit includes one normally closed (NC) and one normally open (NO) contact for auxiliary controls. It does not include a reclosing interlock but does offer a self-reset function, enhancing its ease of use. The measurable temperature range spans from 60°C to 180°C, accommodating a variety of industrial applications.
The 3RN1010-2CB00 is designed for use in environments with ambient temperatures ranging from -25°C to +60°C. Its IP20 protection class ensures that it is safeguarded against solid objects larger than 12.5 mm but not against water, making it suitable for installation in dry and controlled environments.
This thermistor motor protection unit is a reliable solution for motor protection needs in industrial settings, providing both performance and durability.
Commonly Asked Questions
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Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.
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Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.
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Frequently Asked Questions
What is the function of this thermistor motor protection unit?
The thermistor motor protection unit is designed to protect motors from overheating by monitoring the temperature via connected PTC thermistors. If an overtemperature condition is detected, it can switch off the motor to prevent damage.
Can this device be used with both AC and DC control supply voltages?
Yes, the unit is versatile and can be used with a control supply voltage of 24V, whether it's AC at 50/60 Hz or DC.
What are the dimensions of this thermistor motor protection unit?
The unit measures 22.5 mm in width, 94 mm in height, and 91 mm in depth, making it compact and suitable for installation in various control cabinets and setups.
Is there an LED display on this unit?
Yes, the unit includes an LED display for indicating operational status and diagnostics.
What is the temperature range that can be measured by this unit?
The measurable temperature range for this unit starts at 60°C and goes up to 180°C.
Does this unit have a self-reset function?
Yes, the unit features a self-reset function, which allows it to automatically reset under certain conditions.
What type of electrical connections does this unit support?
The unit is equipped with spring-loaded terminals for easy and secure electrical connections.
What is the protection class of this thermistor motor protection unit?
The protection class for this unit is IP20, indicating a basic level of protection against solid objects.
How many measuring circuits does the unit have?
This unit has one measuring circuit for connecting to a PTC thermistor.
What is the ambient operating temperature range for this unit?
The unit can operate within an ambient temperature range of -25°C to +60°C.
Part conditions explained
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New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.
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New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.
Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.
Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.
