Title: SIEMENS 3TF4511-0A Contactor | 22kW AC-3 Motor Control | 45A, 1NO Auxiliary | Industrial Power Switching

Product Overview:
The SIEMENS 3TF4511-0A Contactor is a robust and highly reliable industrial control device engineered for the efficient and safe switching of three-phase AC motors and other resistive loads. As a key component within the esteemed Siemens 3TF series, this contactor is designed for superior performance in demanding industrial environments, offering exceptional durability and operational stability. With a rated operational current of 45 Amperes (AC-3) and capable of controlling motors up to 22 kW at 400V, the 3TF4511-0A is an indispensable part of modern motor control centers, advanced automation systems, and comprehensive power distribution panels. Its integrated 1 Normally Open (NO) auxiliary contact provides crucial flexibility for intricate control circuits, interlocking mechanisms, and status indication. This contactor ensures precise, long-lasting, and secure operation, making it a premier choice for electrical engineers, system integrators, and maintenance professionals seeking dependable electrical switchgear solutions for critical applications.

Key Features & Benefits:

 High Switching Capacity: Rated for a substantial 45A (AC-3) and capable of handling 22 kW at 400V, making it perfectly suited for medium-power motor control and heavy-duty load switching applications.
 Integrated Auxiliary Contact: Features one (1) Normally Open (NO) auxiliary contact, providing essential functionality for control circuit interlocking, signaling, and remote status monitoring, enhancing system automation.
 Robust Industrial Design: Constructed with high-quality materials and engineered to withstand harsh operating conditions, ensuring an extended mechanical and electrical life cycle and significantly reducing maintenance-related downtime.
 Unwavering Reliability: Benefits from Siemens' renowned engineering excellence, guaranteeing consistent and dependable operation, which is critical for maintaining continuity in sensitive industrial processes.
 Versatile Mounting Options: Designed for straightforward and flexible installation, supporting both standard DIN rail mounting and traditional screw mounting, allowing for adaptable panel design and integration.
 Comprehensive Safety Compliance: Manufactured in strict adherence to international safety standards (IEC, EN, VDE, UL, CSA), ensuring safe and secure operation across diverse global electrical systems.
 Enhanced Finger-Safe Terminals: Incorporates advanced terminal designs that prevent accidental contact with live parts, significantly improving safety during installation, wiring, and routine maintenance.
 Optimized Compact Footprint: Features an efficient and space-saving design, allowing for maximum utilization of space within control cabinets, electrical enclosures, and industrial panels.
 Energy Efficiency: Engineered to minimize internal power consumption during operation, contributing to overall energy savings and reduced operational costs in industrial facilities.

Applications:

 Direct-on-line (DOL) starting, stopping, and reversing of three-phase asynchronous motors in a wide array of industrial machinery.
 Control of high-power heating elements, industrial lighting systems, and capacitor banks for precise power factor correction.
 Seamless integration into HVAC (Heating, Ventilation, and Air Conditioning) systems for automated control of fans, pumps, and compressors.
 Essential component for automated operation of conveyor systems, material handling equipment, and industrial pumps.
 Core element in motor control centers (MCCs), industrial automation panels, and process control systems.
 Reliable power switching for general resistive and inductive loads in large-scale commercial and industrial buildings.
 Ideal for applications requiring frequent switching operations and high operational reliability in demanding environments.

Technical Specifications:

 Part Number: 3TF4511-0A
 Alternative Part Number: 3TF45110A
 Product Type: Contactor
 Series: Siemens 3TF (Industrial Contactor)
 Rated Operational Current (AC-3): 45 A (at <= 400 V)
 Rated Operational Power (AC-3): 22 kW (at 400 V)
 Auxiliary Contacts: 1 NO (Normally Open)
 Coil Voltage: Varies by specific model variant (e.g., 24V AC, 110V AC, 230V AC, 400V AC)
 Rated Insulation Voltage (Ui): 690 V
 Rated Impulse Withstand Voltage (Uimp): 6 kV
 Operating Frequency: 50/60 Hz
 Mounting Type: DIN Rail / Screw Mounting
 Operating Temperature Range: -25 °C to +60 °C
 Electrical Endurance (AC-3): Approximately 1.5 million operating cycles
 Mechanical Endurance: Approximately 10 million operating cycles
 Terminal Type: Screw Terminals
 Protection Degree: IP20 (Terminals)
 Standards Compliance: IEC 60947, EN 60947, VDE 0660, UL, CSA
 Weight: 1.0 kg