3RT1045-1BB40 Siemens - Contactor 3-pole
The Siemens 3RT1045-1BB40 is a high-reliability, heavy-duty 3-pole power contactor designed for the switching of motors and industrial loads. Belonging to the globally recognized SIRIUS 3RT1 series, this Size S3 contactor is built to manage demanding inductive currents up to 80 A (AC-3) and resistive loads up to 120 A (AC-1).
Engineered to operate on a 24V DC coil, it delivers precise and safe control. It supports motors up to 37 kW at 400 V. Equipped with robust screw-type terminals for secure wire routing, this contactor offers modular flexibility. It allows easy, direct mounting of thermal overload relays or auxiliary switches to fit custom industrial configurations.
| Manufacturer | Siemens |
| Product Series | SIRIUS 3RT10 |
| Type of Contactor | 3-pole, 3 NO (Normally Open) main contacts |
| Control Voltage | 24V DC |
| Max. Operating Current | 80 A (AC-3 rating) |
| Power Rating (at 400 V) | 37 kW |
| Terminal Type | Screw terminals |
| Size | S3 |
| Mounting | For DIN rail mounting or on panel |
| Dimensions | Approx. 70 mm (W) x 146 mm (L) x 152 mm (D) |
| IP Protection Class | IP20 on the fronT |

Ssaoco Dammam
- Started from: Jul 10, 2025



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