Siemens SIRIUS 3RT2027-2CK64-3MA0 Power Contactor, 32A, 15kW, 110V AC, 2NO+2NC, Spring-Loaded Terminal, Size S0, with Varistor Original Brand New

Overview: High-Performance SIRIUS 3RT2 Power Contactor

The Siemens 3RT2027-2CK64-3MA0 power contactor is a high-performance 3-pole switching device from the SIRIUS 3RT2 family, specifically designed for controlling electric motors up to $15\text{ kW}$ at $400\text{ V}$ and general $32\text{ A}$ loads. This reliable, size S0 contactor is engineered for industrial automation applications requiring a robust, space-saving solution. Its key features, including the spring-loaded terminal connections and the integrated plugged-in varistor for coil protection, ensure fast installation and long-term operational stability in harsh environments.

Key Benefit

• Reliable Motor Control: Rated for $32\text{ A}$ ($\text{AC-3e}/\text{AC-3}$ duty) and $15\text{ kW}$ at $400\text{ V}$, making it ideal for standard 3-phase asynchronous motors.
• Enhanced Surge Protection: Includes a plugged-in varistor to effectively dampen voltage spikes, protecting the coil and extending the overall life of the contactor.
• Quick & Secure Wiring: Spring-loaded terminals offer a vibration-proof, maintenance-free connection, significantly reducing wiring time and labor costs compared to screw terminals.
• Versatile Control: Equipped with a captive auxiliary switch providing $2\text{ NO}+2\text{ NC}$ contacts, offering flexibility for interlocking, signaling, and complex control circuits.
• Global Compatibility: The control coil operates on standard industrial voltages of $110\text{ V AC}\text{ (50 Hz)}/120\text{ V AC}\text{ (60 Hz)}$.

Function & Application

The Siemens 3RT2027-2CK64-3MA0 serves as the primary component for switching and controlling electrical loads. Typical applications include:

1. Switching 3-Phase Motors: Used in motor starter combinations (DOL, Reversing, Star-Delta) to reliably start and stop 3-phase asynchronous motors.
2. Resistive Load Switching: Suitable for controlling heating elements, lighting circuits, and other resistive loads.
3. Industrial Machinery: Integration into control panels for pumps, compressors, conveyers, and HVAC systems.
4. Control Systems: The multiple $2\text{ NO}+2\text{ NC}$ auxiliary contacts allow for seamless integration into safety circuits and process feedback loops.

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