Siemens SIRIUS 3RT2325-1BF40 Contactor 4-Pole AC-1, 35A, 110V DC Coil, S0 Size, Screw Terminal Original Brand New

Overview

The Siemens SIRIUS 3RT2325-1BF40 is a high-performance 4-pole AC-1 contactor designed for reliable switching of weak or non-inductive loads in industrial and commercial applications. Part of the renowned SIRIUS 3RT23 series, this compact S0 size contactor features a robust 110 V DC operating mechanism, ensuring efficient and precise control. With a rated current of 35 A at 400 V / 40 °C, and equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contacts, it offers versatility for various control circuits. Its convenient screw terminals ensure secure and straightforward wiring.

Key Features & Benefit

• Reliable AC-1 Switching: Specifically engineered for 4-pole switching of weak or non-inductive loads, making it ideal for applications like heating elements, lighting systems, and distribution circuits.
• High Current Rating: Handles up to 35 A at 400 V (at 40 °C), providing ample capacity for demanding loads.
• Efficient DC Coil: Features a 110 V DC coil, offering precise control and compatibility with DC control systems.
• Integrated Auxiliary Contacts: Comes with 1 NO + 1 NC auxiliary contacts as standard, facilitating complex control logic and signaling.
• Compact S0 Size: Space-saving design allows for efficient panel layout and integration into diverse control cabinets.
• Secure Screw Terminals: Ensures reliable electrical connections and simplifies installation and maintenance.
• Expandable Functionality: Supports the addition of further auxiliary switches for enhanced control possibilities (permissible configurations must be observed).
• Robust & Standards Compliant: Manufactured to meet IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 standards, guaranteeing performance and safety.

Function & Technical Details

• Application: Ideal for four-pole switching of weak or non-inductive loads (AC-1), disconnecting loads or power generation plants from the grid, and transfer switching applications. Special versions for AC-3 motor loads are also available.
• Standards Compliance: Adheres to international standards for low-voltage switchgear and controlgear, including IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches)
• Protection Considerations:
  • Short-circuit and Overload Protection (Main Connections): Refer to the technical product data sheet for free-standing contactor protection. For device combinations (contactor with overload relay or circuit breaker), consult the Digital and Standard Configuration Manuals for load feeders.
  • Short-circuit and Overload Protection (Auxiliary & Control Connections): Protection must comply with relevant standards for control panel configuration. Suitable power supplies with current-limiting functions or miniature/circuit breakers are recommended.
  • Overvoltage Protection (Control Supply Voltage): Can be retrofitted with surge suppressors (RC elements, varistors, diodes) ordered separately. Note that damping increases break and delay times.
• Connection Methods:
  • Main Circuit: Features screw terminals.
  • Auxiliary and Control Circuit: Utilizes screw terminals for reliable connections.
• Electromagnetic Compatibility (EMC): Fulfills requirements for environment category A. When used with frequency converters, specific configuration notes in the Equipment Manual must be observed.
• Contact Reliability of Auxiliary Contacts: High contact reliability is guaranteed, especially suitable for solid-state circuits with currents $\ge$ 1 mA at a voltage of 17 V and higher.
• Motor Protection Integration: Compatible with SIRIUS 3RU2 thermal overload relays or 3RB3 electronic overload relays for comprehensive motor protection.
• Operating Mechanism: Equipped with a conventional DC operating mechanism, controlled via control supply voltage connections A1-A2.
• Maintenance & Expandability:
  • Solenoid coil replacement is possible.
  • Basic unit includes two integrated auxiliary contacts (1 NO + 1 NC).
  • Can be expanded with additional auxiliary switches for increased functionality.
• Accessories & Spare Parts: A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactors and 3RH2 contactor relays, including surge suppressors and additional auxiliary switches.

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