3RT2045-1KB44-3MA0
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$319.98
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The Siemens 3RT2045-1KB44-3MA0 is a robust industrial power contactor designed specifically for demanding automation applications. Rated for 80 A and capable of handling loads up to 37 kW at 400 V, this 3-pole contactor integrates a 24 V DC coil with an integrated varistor to protect against voltage spikes. Known for its reliability and high performance, it features screw terminals for secure wiring and includes auxiliary contacts to support system monitoring and control. Compact and efficient, the model is ideal for integration in control panels where space and durability matter greatly.
Key Features of Siemens 3RT2045-1KB44-3MA0
- Rated operational current: 80 A at AC-3 / AC-3e operation
- Power capacity up to 37 kW at 400 V (3-phase)
- 24 V DC coil voltage with integrated varistor for surge protection
- 3-pole design with screw terminals for easy and secure installation
- Auxiliary contacts configuration: 1 NO + 1 NC, enhancing control flexibility
- Operational temperature range from -25 to 60 °C, suitable for various environments
- Compact size (S3 size), optimized for space-saving assembly
- Long mechanical and electrical service life ensuring reliable operation
- Compatible with DIN rail, snap-on, or threaded mounting
Explore Siemens 3RT2045-1KB44-3MA0 specifications for detailed parameters
| Parameter | Specification |
|---|---|
| Rated Current | 80 A |
| Rated Power | 37 kW at 400 V (3-phase) |
| Coil Voltage | 24 V DC |
| Number of Poles | 3 |
| Auxiliary Contacts | 1 NO + 1 NC |
| Dimensions (HxWxD) | 140 mm x 70 mm x 195 mm |
| Mounting | DIN Rail / Snap-On / Threaded |
| Operating Temperature | -25 to 60 °C |
Applications / Use Case
This Siemens 3RT2045-1KB44-3MA0 power contactor is commonly used in industrial automation systems, providing reliable switching for motor control, production line equipment, and factory control panels. It is well-suited for controlling heavy-duty electrical loads such as pumps, compressors, and conveyor belts, ensuring safe and efficient operation across various sectors including manufacturing, processing, and packaging. Its high power rating and robust design make it a preferred choice in motion control setups where precision and dependability are critical.
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