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General| Product brand name | Siemens |
|---|---|
| Series | SIRIUS |
| Coil Voltage | 24V DC, 110V AC, 230V AC |
| Switching Capacity | Up to 10A |
| Mounting Type | DIN rail |
| Product designation | SIRIUS |
| Contact Material | Silver alloy |
| Contact Rating | Varies depending on the specific SIRIUS relay model (e.g., 6 A at 250 V AC, 10 A at 250 V AC) |
| Switching Voltage | Varies depending on the specific SIRIUS relay model (e.g., 250 V AC, 400 V AC) |
| Mechanical Life | Up to 10 million operations |
| Electrical Life | Up to 100, 000 operations |
| Operating Temperature | -25°C to +55°C |
| Protection Class | IP20 |
| Size of relay base | Varies depending on the specific SIRIUS relay model |
Details the manual's scope, covering 3RA21/3RA22 load feeders, mounting, components, and operation.
Explains how to access up-to-date information, product support, FAQs, manuals, and services online.
Explains types of coordination as selection criteria for fuseless load feeders, defined in the appendix.
Describes fuseless load feeders as combinations of motor starter protectors and contactors.
Details characteristics of load feeders like coordination type, voltage, mounting, and connection.
Details 3RA2 fuseless load feeders that are pre-wired and mechanically connected, available in specific sizes.
Describes load feeders assembled from individual devices as an alternative to complete devices.
Describes the function of 3RV2 motor starter protectors and 3RT2 contactors in pre-assembled load feeders.
Introduces the online SIRIUS system configurator for planning and realizing projects virtually.
Discusses using 3RA2 load feeders with IE3 motors, focusing on startup characteristics and potential issues.
Provides general installation guidelines for the assemblies, including clearances.
Covers assembly and disassembly procedures for various mounting systems like DIN rail, busbar, and base plate.
States that conductor cross-sections are the same as those of individual devices.
Discusses controls for operating a motor starter protector.
Explains that SIRIUS modular system features link modules to facilitate combinations of devices.
Lists kits available for DIN rail mounting, including DIN rail adapters and assembly kits.
Lists assembly kits for reversing operation for busbar mounting in various connection systems and sizes.
Explains how to find technical data sheets for products on the Siemens Industry Online Support portal.
Explains how to find CAx data on the Siemens Industry Online Support portal.
Describes Type 1 coordination where the load feeder may be non-operational after a short circuit.
Describes Type 2 coordination where the load feeder can resume operation with minimal damage.
Lists operating instructions for different SIRIUS load feeders and accessories with article numbers.
Presents dimension drawings for 3RA2 fuseless load feeders, sizes S00 to S3, for DIN rail mounting.
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