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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RN2010-1CW30 |
| Alternative Part Number | 3RN20101CW30 |
| Manufacturer | Siemens |
| Product Type | Thermistor Motor Protection Relay |
| Contact Configuration | 1 Normally Open (NO), 1 Normally Closed (NC) |
| Supply Voltage | 24 to 240 V ac/dc |
| Mounting Type | DIN Rail Mount |
| Dimensions | 17.5 x 90 x 100 mm |
| Display Type | LED |
| Power Loss | 0.9 W at rated current in hot operating state |
| Degree of Pollution | 3 |
| Surge Voltage Resistance | 4 kV |
| Protection Class | IP20 |
| Shock Resistance | 11g / 15 ms according to IEC 60068-2-27 |
| Vibration Resistance | 10 ... 55 Hz: 0.35 mm according to IEC 60068-2-6 |
| Mechanical Service Life | 10,000,000 switching cycles (typical) |
| Electrical Endurance | 100,000 switching cycles at AC-15 at 230 V (typical) |
| Thermal Current | 5 A maximum for the switching element with contacts |
| Reference Code | K according to IEC 81346-2 |
| Control Supply Voltage Type | AC/DC |
| Operating Range Factor | 0.85 to 1.1 for control supply voltage |
| Inrush Current Peak | 0.3 A at 24 V, 8 A at 240 V |
| Buffering Time | Minimum 40 ms in the event of power failure |
| Relative Metering Precision | 9% |
| Switching Contacts Material | AgSnO2 |
| Number of Auxiliary Contacts | 1 NC, 1 NO |
| Installation Altitude | Up to 2,000 m above sea level |
| Ambient Operating Temperature | -25 ... +60 °C during operation |
The Siemens 3RN2010-1CW30 is a state-of-the-art thermistor motor protection relay designed for compact and efficient motor safety management. This advanced relay is housed in a slender 17.5 mm enclosure, making it an ideal choice for space-constrained applications. It features a screw terminal for secure and reliable connections, and it is equipped with one normally open (NO) and one normally closed (NC) contact.
Engineered to operate with a control supply voltage ranging from 24 V to 240 V AC/DC, this versatile relay is suitable for a wide array of electrical setups. The auto-reset function ensures seamless operation, and it is compatible with bimetallic switches, enhancing its adaptability to different motor protection schemes.
The relay is also equipped with two LEDs that provide clear and immediate status indication, signalling 'Ready' or 'Tripped' states for quick diagnostics. The inclusion of galvanic isolation within the unit ensures that the input and output circuits are electrically separated, providing an additional layer of safety and equipment protection.
With its robust design, the Siemens 3RN2010-1CW30 can withstand challenging environmental conditions, making it a reliable choice for industrial applications. Its compact form factor, combined with its comprehensive protection features, makes it an essential component for safeguarding motors against overheating and other potential hazards.
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Frequently Asked Questions
What is the function of this thermistor motor protection relay?
The thermistor motor protection relay is designed to protect motors from overheating by monitoring the temperature via connected PTC thermistors. If an overtemperature condition is detected, it will switch off the motor to prevent damage.
Can this relay be mounted on a DIN rail?
Yes, it is designed for DIN rail mounting with both screw and snap-on features, making it versatile for installation in various control cabinets and panels.
What type of terminals does this relay have for electrical connections?
It is equipped with screw-type terminals, allowing for secure and reliable wire connections.
Is there an auto-reset feature on this relay?
Yes, the relay includes an auto-reset feature, which allows it to automatically reset after a fault condition has been cleared.
What is the voltage range for this relay?
The relay operates within a control supply voltage range of 24 to 240 V AC/DC, accommodating a wide range of power supply specifications.
Does this relay have LED indicators?
Yes, it has two LED indicators that provide visual status feedback. One indicates when the relay is ready, and the other lights up if a trip due to overheating has occurred.
What is the maximum ambient temperature in which this relay can operate?
The relay is designed to operate within an ambient temperature range of -25 to +60 degrees Celsius during operation.
What certifications does this relay hold?
The relay has general product approvals and complies with EMC standards, ensuring its reliability and safety in various industrial environments.
What is the installation position for this relay?
The relay can be installed in any position, providing flexibility in mounting and ensuring optimal use of space within control panels.
What is the mechanical service life of this relay?
The relay boasts a mechanical service life of typically 10 million switching cycles, highlighting its durability and longevity in demanding industrial applications.
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