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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RN1012-1BB00 |
| Alternative Part Number | 3RN10121BB00 |
| Manufacturer | Siemens |
| Voltage Type | AC/DC |
| Supply Voltage | 24 V at 50/60 Hz for AC, 24 V for DC |
| Number of Measuring Circuits | 1 |
| Contacts | 1NO (Normally Open) / 1NC (Normally Closed) |
| Change-over Switches | 2 for auxiliary contacts |
| Measurable Temperature Range | 60°C to 180°C |
| Product Functions | Reclosing interlock, Self-reset, Defect storage, External reset |
| Ambient Operating Temperature | -25°C to +60°C |
| Protection Class | IP20 |
| Mounting Type | Screw Mount/Snap-On Mount |
| Connection Type | Screw Terminal |
| Dimensions (W x H x D) | 22.5 mm x 102 mm x 91 mm |
| Display | LED |
| Approvals | General Product Approval, EMC, For use in hazardous locations, Various test certificates |
The Siemens 3RN1012-1BB00 is a sophisticated motor protection relay designed to safeguard motors from potential hazards. This compact device is engineered to monitor the temperature of motor windings using PTC thermistors, ensuring that your motor is protected from overheating and other temperature-related issues. With a versatile 24 V ac/dc control supply voltage and a user-friendly LED display, the relay provides clear and immediate status indication.
Featuring both manual and automatic reset functions, as well as remote reset capabilities, the 3RN1012-1BB00 offers flexibility in operation and system integration. The unit includes two change-over contacts, allowing for a variety of wiring configurations to suit different control and alarm requirements.
Constructed with screw-type terminals, the relay ensures a secure and reliable electrical connection, while its screw mount and snap-on mount options provide ease of installation in a range of industrial settings. The relay's compact dimensions, 23 x 91 x 102 mm, make it an ideal choice for space-constrained environments.
The 3RN1012-1BB00 is designed to operate within a broad ambient temperature range of -25 to +60 degrees Celsius, making it suitable for a wide array of operating conditions. Its IP20 protection class signifies that the device is protected against solid objects larger than 12.5 mm, adding to its durability and reliability in industrial applications.
This motor protection relay is a testament to Siemens' commitment to quality and innovation, offering a reliable solution for motor protection that is both effective and easy to use. Whether you're looking to protect a single motor or integrate protection into a larger system, the Siemens 3RN1012-1BB00 is a prudent choice for motor safety and longevity.
Commonly Asked Questions
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Frequently Asked Questions
What is the purpose of this motor protection relay?
This motor protection relay is designed to safeguard motors from overheating by monitoring the temperature via connected thermistors and providing a switch-off mechanism if a critical temperature is reached.
Can this relay be used with both AC and DC control circuits?
Yes, the relay is suitable for use with 24 V AC/DC control circuits, providing flexibility for integration into various electrical systems.
What are the mounting options for this relay?
The relay offers both screw and snap-on mounting options, allowing for easy installation in a variety of settings.
What type of terminals does this relay have for electrical connections?
It is equipped with screw-type terminals for secure and reliable electrical connections in auxiliary and control current circuits.
What is the ambient temperature range for the operation of this relay?
The relay can operate within an ambient temperature range of -25 to +60 degrees Celsius, ensuring performance in a wide range of environmental conditions.
Does this relay have a manual reset function?
Yes, the relay includes a manual reset function, allowing operators to manually reset the device after a trip event.
What is the significance of the LED display on this relay?
The LED display provides a visual indication of the relay's status, which can be helpful for monitoring and diagnostics.
How many auxiliary contacts does this relay have?
The relay has 1 normally open (NO) and 1 normally closed (NC) auxiliary contact for signaling and control purposes.
What is the protection class of this relay?
The relay has a protection class of IP20, indicating a basic level of protection against solid objects.
Can this relay be used for applications requiring reclosing lockout?
Yes, the relay features a reclosing lockout function to prevent automatic restarting of the motor under certain conditions.
Part conditions explained
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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.
