Siemens 3RT2325-2BM40 Contactor 4-Pole AC-1, 35A, 220V DC Coil, Spring-Loaded Terminal, S0 Size Original Brand New

Overview

The Siemens 3RT2325-2BM40 is a high-performance 4-pole contactor designed for reliable switching of non-inductive or weakly inductive loads (AC-1) up to 35 A at 400 V / 40 °C. Featuring a 220 V DC operating mechanism, integrated 1 NO + 1 NC auxiliary contacts, and convenient spring-loaded terminals, this compact S0 size contactor is an ideal choice for diverse industrial applications. Built to comply with international standards like IEC 60947, it ensures robust and safe operation in various control panel environments.

Benefit

• Reliable Performance: Designed for demanding industrial environments, ensuring stable and consistent operation for AC-1 applications.
• Space-Saving Design: Compact S0 size allows for efficient panel layout and optimization.
• Easy Installation: Spring-loaded terminals offer fast, tool-free wiring, reducing installation time and costs.
• Versatile Application: Suitable for switching non-inductive loads, disconnecting power generation plants, and transfer switching.
• Enhanced Safety: Built-in auxiliary contacts provide flexible control and feedback options for enhanced system safety.
• Standards Compliance: Adheres to essential international standards (IEC 60947), guaranteeing quality and compatibility.
• Expandability: Supports the addition of further auxiliary switches for increased control flexibility.

Function & Technical Details

• Standards Compliance: Meets IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches), ensuring high levels of safety and performance.
• Protection Considerations:
  • Main Connections: Requires suitable short-circuit and overload protection, detailed in the technical product data sheet and configuration manuals for device combinations (contactor with overload relay or circuit breaker).
  • Auxiliary Connections: Protection information available in the technical product data sheet.
  • Control Supply Voltage: Protection advised through suitable current-limiting power supplies, considering inrush and holding currents. Recommendations for miniature or circuit breakers in control circuits are available.
• Overvoltage Protection: Can be retrofitted with surge suppressors (RC elements, varistors, diodes, or diode assemblies) to dampen opening surges in the coil. Note that damping increases break and delay times.
• Connection Methods: Main circuit uses spring-loaded terminals for convenient plug-in design. Auxiliary and control circuits utilize screw terminals.
• Electromagnetic Compatibility (EMC): Fulfills requirements for environment category A. Specific configuration notes apply when used with frequency converters.
• Contact Reliability of Auxiliary Contacts: High contact reliability for switching low voltages (≤ 110 V) and currents (≤ 100 mA), suitable for solid-state circuits (≥ 1 mA at 17 V and higher).
• Motor Protection: Compatible with 3RU2 thermal overload relays or 3RB3 electronic overload relays for overload protection in motor applications (though this specific contactor is AC-1 rated for non-motor loads).
• Operating Mechanism: Features a conventional DC operating mechanism, controlled via A1-A2 connections.
• Maintenance: Solenoid coil replacement is possible.
• Auxiliary Contact Configuration: Basic unit includes one integrated NO + NC auxiliary contact (1 NO + 1 NC for 3RT232 to 3RT234 contactors). Expandable with additional auxiliary switches.

Application

The Siemens 3RT2325-2BM40 contactor is ideally suited for:

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

Accessories & Spare Parts: A wide range of accessories and spare parts are available for SIRIUS 3RT2 contactors and 3RH2 contactor relays, including surge suppressors and additional auxiliary switches, to further customize and maintain your system. Please refer to the Accessories and Spare Parts section for detailed ordering information.

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