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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RA6120-2DB32 |
| Alternative Part Number | 3RA61202DB32 |
| Manufacturer | Siemens |
| Product Brand Name | SIRIUS |
| Product Designation | Compact starter |
| Design | Direct starter |
| Trip Class | CLASS 10 and 20 adjustable |
| Control Circuit Interface | Yes, to parallel wiring |
| Bus Communication | No |
| Short Circuit Protection | Yes |
| Type of Assignment | Continuous operation according to IEC 60947-6-2 |
| Protection Class IP | IP20 |
| Degree of Pollution | 3 |
| Mounting Position | Vertical, on horizontal standard mounting rail recommended |
| Installation Altitude | Maximum 2,000 m above sea level |
| Ambient Temperature Operating Range | -20 … +60 °C |
| Ambient Temperature Storage Range | -55 … +80 °C |
| Relative Humidity | 10 … 90 % during operation |
| Insulation Voltage | Rated value 690 V |
| Surge Voltage Resistance | Rated value 6,000 V |
| Main Circuit Connection | Spring-loaded terminal |
| Auxiliary Circuit Connection | Spring-loaded terminal |
| Number of Poles | 3 for main current circuit |
| Adjustable Response Current | 3 … 12 A for current-dependent overload release |
| Mechanical Service Life | 10,000,000 cycles for main and auxiliary contacts |
| Control Supply Voltage | 24 V AC/DC at 50/60 Hz |
| Full-load Current (FLA) | 12 A at 480 V and 600 V for 3-phase motor |
| Operating Voltage | Maximum 690 V at AC-3 |
| Frequency of Operation | 750 1/h at AC-41, 250 1/h at AC-43 according to IEC 60947-6-2 |
| Mechanical Power Output | 5.5 kW at 400 V, 5.5 kW at 500 V, 7.5 kW at 690 V for 4-pole three-phase motor |
| Auxiliary Contacts | 1 NC contact, 1 NO contact, and 1 changeover contact for current-dependent overload release |
The Siemens 3RA6120-2DB32 is a compact load feeder and direct-on-line (DOL) starter, designed to offer a reliable solution for controlling motors in a variety of industrial applications. This robust component is engineered to handle operating voltages up to 690 V and control supply voltages of 24 V AC/DC, making it versatile for use in diverse electrical setups.
With an adjustable response current range of 3 to 12 A, the 3RA6120-2DB32 ensures precise protection for motors against potential overload conditions. It features a Class 10 and 20 adjustable trip class, providing flexibility and enhanced motor safety. The compact starter is also equipped with short-circuit protection, adding an extra layer of security to your system.
The unit is designed for continuous operation in accordance with IEC 60947-6-2 standards and boasts an IP20 protection class, ensuring it is safeguarded against solid objects larger than 12.5 mm. The device's construction allows for vertical mounting on a horizontal standard mounting rail, with a recommended installation altitude of up to 2000 meters above sea level.
The 3RA6120-2DB32's spring-loaded terminals facilitate a straightforward and secure connection for both the main and auxiliary circuits. It supports a wide range of conductor cross-sections, accommodating various wiring requirements. The compact starter's mechanical and electrical endurance is impressive, with typical operating cycles for the main and auxiliary contacts reaching up to 10 million.
This Siemens compact starter is a testament to the brand's commitment to quality, reliability, and innovation, making it an essential component for efficient motor control in industrial environments across the United Kingdom and beyond.
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Frequently Asked Questions
What is the design of this compact starter?
The design of this compact starter is a direct starter, which is suitable for initiating a motor directly at full line voltage.
Can this device be used for continuous operation?
Yes, the compact starter is designed for continuous operation according to IEC 60947-6-2 standards.
What is the IP protection class of this compact starter?
This compact starter has an IP protection class of IP20, indicating protection against solid objects larger than 12mm but not against liquids.
What are the ambient temperature ranges for operating this compact starter?
The ambient temperature range for operating the compact starter is between -20°C and +60°C.
What type of terminals does this compact starter have for the main and auxiliary circuits?
This compact starter features spring-loaded terminals for both the main and auxiliary circuits.
Is there short circuit protection included in this compact starter?
Yes, the compact starter includes short circuit protection to safeguard against excessive current.
What is the rated insulation voltage for this compact starter?
The rated insulation voltage for the compact starter is 690V.
What is the maximum operating altitude for this compact starter?
The maximum operating altitude for the compact starter is 2,000 meters above sea level.
How many mechanical operating cycles can the main contacts of this compact starter withstand?
The main contacts of the compact starter can typically withstand 10,000,000 mechanical operating cycles.
What is the power loss at the rated current for this compact starter?
The power loss at the rated current for this compact starter is typically 1.8W for AC in a hot operating state.
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