Siemens Reversing starter, 3RM1, 500 V, 0.09 – 0.75 kW, 0.4 – 2 A, 24 V DC, screw terminals (3RM1202-1AA04) is a Siemens SIRIUS 3RM1 electronic reversing motor starter designed for controlled forward and reverse operation of three-phase motors. The device integrates electronic switching, overload protection and reversing functionality into a compact unit for space-saving, reliable motor control in industrial automation systems.
The Siemens 3RM1202-1AA04 reversing starter is used for controlled forward and reverse operation of three-phase motors in industrial machinery, conveyors, pumps and automation systems. It provides integrated electronic switching and overload protection for motors in the 0.09 to 0.75 kW range, offering compact, efficient and reliable motor control in modern control panels.
| Ambient temperature, upper operating limit | 60 °C |
| Degree of protection (IP) | IP20 |
| Depth | 141.6 mm |
| External reset possible | Yes |
| Height | 100 mm |
| Number of auxiliary contacts as normally closed contact | 1 |
| Number of auxiliary contacts as normally open contact | 1 |
| Number of indicator lights | 4 |
| Overload release current setting | 2 A |
| Rail mounting possible | Yes |
| Rated control supply voltage DC | 24 V |
| Rated operation current at AC-3, 400 V | 2 A |
| Rated operation current Ie | 2 A |
| Rated operation power at AC-3, 230 V, 3-phase | 0.37 kW |
| Rated operation power at AC-3, 400 V | 0.75 kW |
| Rated power, 460 V, 60 Hz, 3-phase | 0.5516241 kW |
| Release class | CLASS 10 A |
| Type of electrical connection for auxiliary- and control current circuit | Screw connection |
| Type of electrical connection of main circuit | Screw connection |
| Voltage type for actuating | DC |
| Width | 22.5 mm |
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