Siemens SIRIUS 3RT1056-6PF35 Power Contactor, 185A, 90kW, AC/DC 96-127V, Busbar, Lifetime Indicator Original Brand New

Overview: Siemens 3RT1056-6PF35 SIRIUS Power Contactor

The Siemens 3RT1056-6PF35 is a high-performance, 3-pole power contactor from the SIRIUS 3RT10 series, engineered for reliable switching of electric motors up to 90 kW at 400 V (AC-3e/AC-3). This robust, size S6 contactor features a flexible, wide-range electronic drive control for both AC and DC operation (Uc​: 96-127 V).

It is specifically designed for modern industrial automation, offering a 24 V DC PLC input and an advanced integrated remaining lifetime indicator for proactive maintenance and system uptime optimization. The main circuit utilizes busbar connections for high current and robust power distribution, while the control and auxiliary circuits use secure screw terminals.

Benefit

1. Optimized for Automation (Industry 4.0 Ready): The integrated $\text{24 V DC}$ PLC input simplifies wiring and direct connection to programmable logic controllers, enhancing integration into modern control systems.
2. Predictive Maintenance: The included remaining lifetime indicator provides valuable diagnostic data, allowing operators to plan for replacement before a failure, significantly reducing unscheduled downtime.
3. High Power Density: Delivers $\text{185 A}$ and $\text{90 kW}$ in a compact Size S6 design, saving panel space.
4. Flexible Operation: The wide-range control voltage ($\text{96-127 V AC/DC}$) and electronic drive provide consistent, reliable performance across different power supplies.
5. Robust Power Connection: Busbar connections for the main circuit ensure secure, high-capacity power transmission.

Function and Application

The 3RT1056-6PF35 functions primarily as a main switching device in heavy-duty industrial applications.

• Motor Switching: Controls the ON/OFF function for large three-phase motors in machinery, pumps, fans, and compressors.
• Resistive Loads: Suitable for switching resistive loads like heating elements and lighting systems.
• Integration: Seamlessly integrates into larger control panels and motor feeder solutions, especially those requiring communication and monitoring capabilities via PLC.

For more information on the Siemens 3RT1056-6PF35 and to explore our full range of industrial control products, visit turll today!