Overview
The Siemens 3RT2015-1FB42 SIRIUS Power Contactor is a highly efficient and compact 3-pole switching device, specifically designed for controlling electric motors up to 3 kW at 400 V (AC-3 rating). Part of the renowned modular SIRIUS system, this contactor offers exceptional reliability and performance in a Size S00 footprint. Featuring a robust 24 V DC coil with an integrated suppressor diode, it ensures reliable, low-power operation and provides built-in coil protection against voltage spikes. This unit is an ideal component for industrial control panels, motor starters, and automation systems requiring dependable, compact motor switching.
Benefit
- Exceptional Reliability: Part of the globally recognized Siemens SIRIUS modular system, ensuring high-quality, long-lasting performance.
- Space-Saving Design: The compact Size S00 makes it perfect for tight control panel installations, optimizing cabinet space.
- Reduced Wiring Complexity: The integrated 1 NC auxiliary contact and the integrated diode for coil protection reduce the need for external components and simplify wiring.
- Versatile Application: Suitable for worldwide use, being IE3/IE4-ready and approved according to standards like IEC and UL/CSA.
- Easy Installation: Features robust screw terminals for secure and straightforward main and auxiliary circuit connections.
- DC Control Efficiency: The 24 V DC operation is common in automation systems and the integrated diode protects the control circuit electronics.
Function / Application
The 3RT2015-1FB42 serves as a core component in low-voltage industrial control and automation. Its primary function is the safe and reliable switching (making and breaking) of electrical circuits, particularly for the control of motors.
- Direct-On-Line (DOL) Motor Starters: Acts as the primary switching element in non-reversing motor starter applications for pumps, fans, conveyors, and machinery.
- Resistive Load Switching: Can also be used for switching non-motor loads such as heating elements.
- Integration into Control Systems: The 24 V DC coil voltage is standard for PLCs and other control devices, allowing for direct and easy integration into automated sequences.
- Safety and Interlocking: The built-in 1 NC auxiliary contact can be used for feedback to a PLC, control circuit interlocking, or signaling purposes.
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