This product page details the Siemens power contactor, a reliable 3-pole switching device designed for motor control and power switching applications. Rated for 11kW at 400V with a 25A current capacity, this contactor features a 24VDC control coil, three main normally open power contacts, and versatile auxiliary contacts (1NO+1NC) with screw terminals for industrial control systems.
Overview of the Power Contactor
The Siemens power contactor serves as a critical component in industrial control systems for medium-power applications. Because it provides reliable switching with low-voltage control capability, it offers both operational safety and precise control for motors, heating systems, and other industrial loads requiring frequent operation.
Key Features and Technical Specifications
This industrial contactor is engineered for both performance and safety. Therefore, here are its essential characteristics:
- Power Rating: 11kW at 400V for three-phase systems
- Current Capacity: 25A continuous current rating
- Poles: 3-pole configuration for three-phase applications
- Coil Voltage: 24VDC for safe control circuit operation
- Main Contacts: 3 normally open (NO) power contacts
- Auxiliary Contacts: 1 NO + 1 NC for control circuit signaling
- Terminals: Screw terminals for secure connections
- Mounting: Standard DIN rail or panel mounting
Typical Applications and Use Cases
The specific rating of this power contactor makes it suitable for various industrial applications. For example, it is commonly used for:
- Three-phase motor control (up to 15HP applications)
- Industrial pump and fan control systems
- Heating system power switching
- HVAC system compressor and fan control
- Manufacturing equipment power distribution
- Process control system component switching
- Machine tool and automation control
For complete motor control solutions, explore our range of compatible Siemens overload relays designed to work with these contactors for comprehensive motor protection.
Why Choose This Siemens Power Contactor?
Selecting this Siemens power contactor provides significant advantages for industrial control applications. Firstly, the 24VDC control coil ensures safe operation in control environments, reducing shock hazard for maintenance personnel while being compatible with PLCs and safety control systems. Secondly, the combination of main NO contacts and auxiliary contacts (1NO+1NC) offers flexible control options for both power switching and status indication. Consequently, you achieve robust power control with enhanced safety features for modern industrial automation systems.
Installation and Wiring Guidelines
Proper installation of this power contactor is essential for optimal performance and safety. Mount the contactor securely on a DIN rail or panel, ensuring adequate clearance for ventilation and maintenance. Use appropriate cable sizes for the 25A rating and torque the screw terminals to Siemens’ specifications. Furthermore, the 24VDC coil requires proper polarity observation for reliable operation, and the auxiliary contacts should be utilized for control circuit functions such as status indication, interlocking, or remote monitoring as needed.
For detailed technical specifications and application guidelines, consult the comprehensive Siemens industrial automation documentation.
Enhance Your Industrial Control System Today
In summary, this Siemens power contactor with its 11kW rating and 24VDC control represents a reliable and safe solution for medium-power industrial applications. Finally, by incorporating this robust contactor into your control systems, you ensure reliable operation, enhanced safety, and long service life for your industrial electrical applications.
