Siemens 3RT1373-6AF36 Contactor, AC-1, 400A, 4-Pole, 48-130V AC/DC Original Brand New

Siemens 3RT1373-6AF36 Contactor: High-Performance 400A AC-1 Switching Solution

The Siemens 3RT1373-6AF36 is a robust and reliable 4-pole contactor designed for demanding AC-1 applications. With a rated current of 400 A at 400 V and 40 °C, this S12 size contactor is ideal for switching non-inductive or weakly inductive loads in industrial and commercial environments. Its versatile 48-130 V AC/DC control voltage range and pre-equipped 2 NO + 2 NC auxiliary contacts offer exceptional flexibility for various control circuit.

Key Features & Benefit

• High Current Rating: Handles up to 400 A (AC-1) at 400 V, making it suitable for high-power switching applications.
• 4-Pole Configuration: Provides simultaneous switching of four circuits, perfect for multi-phase systems or complex load management.
• Wide Voltage Range: Operates reliably with a broad 48-130 V AC/DC control supply, simplifying integration into diverse control systems.
• Integrated Auxiliary Contacts: Comes standard with 2 Normally Open (NO) and 2 Normally Closed (NC) auxiliary contacts for enhanced control and feedback capabilities.
• Robust Connection Options: Features connection rails and screw terminals for secure and straightforward wiring.
• Integrated Overvoltage Damping: Equipped with a varistor for coil damping, protecting the control circuit from harmful voltage surges.
• Standards Compliance: Manufactured in accordance with IEC 60947‑1, IEC 60947‑4‑1, and IEC 60947‑5‑1, ensuring high quality and safety.
• Durable Design: Built for longevity and performance in challenging industrial settings.

Application

The Siemens 3RT1373-6AF36 contactor is perfectly suited for:

• Four-pole switching of non-inductive or weakly inductive loads (AC-1)
• Disconnecting loads or power generation plants from the grid
• Transfer switching applications

Protection & Safety:

This contactor adheres to strict safety standards, emphasizing the need for appropriate short-circuit, overload, and overvoltage protection for all connections. While the 3RT13 series features integrated coil damping, external protection measures are crucial for the main, auxiliary, and control supply connections. Refer to the technical product data sheet and relevant configuration manuals for detailed protection guidelines and recommendations.

Connection Methods:

The main circuit connections utilize screw terminals with connecting bars, allowing for cable lugs or flexible/rigid busbars. Auxiliary and control circuits are connected via reliable screw terminals.

Electromagnetic Compatibility (EMC):

The 3RT1373-6AF36 meets the requirements for environment category A, ensuring reliable operation in typical industrial environments. For applications involving frequency converters, consult the Equipment Manual for specific configuration notes.

Contact Reliability:

The auxiliary contacts of the 3RT13 contactors provide high contact reliability, making them ideal for low-voltage and low-current solid-state circuit.

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