Siemens 3RT1064-6AB36 Power Contactor, 110kW at 400V AC-3

The Siemens 3RT1064-6AB36 is a robust power contactor engineered for the reliable switching of electrical motors and heavy-duty industrial loads. As a core component of the SIRIUS modular system, this 3-pole contactor is designed to deliver high performance and exceptional contact reliability in demanding environments. It supports a power rating of 110 kW at 400 V in the AC-3 utilization category, making it a versatile solution for complex electrical systems requiring consistent operation.

Advantages

This contactor stands out due to its compact design, which allows for efficient space utilization within control cabinets. It is fully climate-resistant and approved for global use, meeting international standards such as IEC and UL/CSA. The device is IE3 and IE4-ready, ensuring compatibility with modern high-efficiency motor requirements. Furthermore, the inclusion of pre-installed auxiliary switches simplifies design complexity, while the modular nature of the SIRIUS system allows for seamless integration with other load feeder components.

Suitable for

• Switching industrial motors
• Heavy-duty electrical load control
• Integration into automated systems via PLC
• Applications requiring high contact reliability

When it may not be suitable

This contactor is specifically designed for industrial power switching applications and may be oversized or unnecessary for simple residential or low-voltage household appliances. It is not intended for use in environments that exceed its specified voltage or current ratings.

Key specifications

• Power rating: 110 kW at 400 V (AC-3)
• Rated operational current: 225 A
• Control supply voltage: 23-26 V AC/DC
• Number of poles: 3
• Auxiliary contacts: 2 NO + 2 NC
• Main circuit connection: Busbar
• Control/auxiliary circuit connection: Screw terminal

How to use

The contactor should be installed by qualified personnel in accordance with local electrical regulations. The main circuit is connected via busbars, while the control and auxiliary circuits utilize screw terminals for secure attachment. Ensure that the control voltage matches the specified range of 23-26 V. The device can be integrated into a load feeder assembly and combined with compatible SIRIUS accessories to streamline wiring and installation processes.

What to consider before purchase

• Verify that the control voltage (23-26 V) is compatible with your existing control system.
• Ensure the 110 kW power rating is appropriate for the motor or load being controlled.
• Check available space in the control cabinet for busbar connections.
• Confirm that the auxiliary contact configuration (2 NO + 2 NC) meets your feedback or interlocking requirements.

Usage recommendations

Regularly inspect the screw terminal connections for tightness and ensure the environment remains within the specified climate conditions to maintain optimal performance and longevity of the contactor.