Siemens 3RT2325-2AK60 Contactor 4-Pole AC-1, 35A, 110V AC / 120V 60Hz Coil, S0 Size Original Brand New

Siemens 3RT2325-2AK60 Contactor: Robust 4-Pole Solution for AC-1 Applications

The Siemens 3RT2325-2AK60 is a high-performance 4-pole AC-1 contactor, engineered for reliable switching of weak or non-inductive loads. Part of the trusted SIRIUS 3RT2 series, this size S0 contactor features a 35A current rating at 400V / 40°C, a versatile 110V AC (50 Hz) / 120V AC (60 Hz) operating coil, and convenient spring-loaded terminals for quick and secure wiring. Equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, it offers enhanced control circuit flexibility.

Overview

The Siemens 3RT2325-2AK60 contactor is designed to meet rigorous industrial standards, providing a robust solution for diverse applications, including disconnecting loads, power generation plant integration, and transfer switching. Its compact S0 size makes it suitable for various control panel configurations.

Benefit

• Reliable Performance: Engineered for consistent and safe operation in AC-1 applications.
• Versatile Application: Ideal for switching non-inductive loads, load disconnection, and transfer switching.
• Ease of Installation: Spring-loaded terminals facilitate fast, tool-free wiring, reducing installation time and effort.
• Enhanced Control: Integrated 1 NO + 1 NC auxiliary contacts provide flexibility for interlocking and signaling circuits.
• Space-Saving Design: Compact S0 size is optimized for efficient use of panel space.
• Broad Compatibility: Part of the SIRIUS modular system, allowing for seamless integration with other Siemens components like overload relays and circuit breakers.

Function

• Switching Non-Inductive Loads (AC-1): Efficiently makes and breaks circuits for resistive loads, heating elements, and distribution systems.
• Load Disconnection: Provides a reliable means to isolate electrical loads or power generation plants from the grid.
• Transfer Switching: Can be utilized in various transfer applications, e.g., switching between main and auxiliary power sources.
• Control Circuit Integration: Auxiliary contacts enable connection to control circuits for status indication and interlocking.

Standards & Protection: The Siemens 3RT2325-2AK60 contactor adheres to international standards, ensuring high levels of safety and performance:

• IEC 60947-1 (General rules)
• IEC 60947-4-1 (Contactors and motor-starters)
• IEC 60947-5-1 (Auxiliary switches)

Protection of Connections

• Main Connections: Requires suitable short-circuit and overload protection. Refer to the technical product data sheet for free-standing contactor protection, and digital/configuration manuals for device combinations (contactor with overload relay or circuit breaker).
• Auxiliary Connections: Short-circuit and overload protection of auxiliary contacts are detailed in the technical product data sheet.
• Control Supply Voltage Connections: Protection must comply with relevant standards for control panel configuration. Consider power supplies with current-limiting functions and suitable protection devices.
• Overvoltage Protection: The 3RT23 contactors can be retrofitted with surge suppressors (RC elements, varistors, diodes) for damping opening surges in the coil (ordered separately). Note: Damping increases break times and contact delay times.

Connection Methods:

• Main Circuit: Features convenient spring-loaded terminals, providing secure and efficient connections.
• Auxiliary and Control Circuit: Utilizes screw terminals for reliable wiring.

Electromagnetic Compatibility (EMC): The contactor meets 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: The auxiliary contacts are designed for high contact reliability, especially suitable for switching voltages $\le$ 110 V and currents $\le$ 100 mA. They are highly effective for solid-state circuits with currents $\ge$ 1 mA at 17 V and higher.

Motor Protection Compatibility: For overload protection, the 3RT23 contactors can be directly mounted with:

• SIRIUS 3RU2 thermal overload relays
• SIRIUS 3RB3 electronic overload relays

Operating Mechanism: The 3RT2325-2AK60 features a conventional AC operating mechanism, controlled via terminals A1-A2. Operating ranges are detailed in the technical product data sheet.

Maintenance & Expansion:

• Solenoid Coil Replacement: The solenoid coil for this 3RT23 contactor can be replaced.
• Auxiliary Switch Expansion: The basic unit can be expanded with additional auxiliary switches. Refer to the “Auxiliary switches, instantaneous” overview for detailed information on permissible configurations.

Accessories and Spare Parts: A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactors, including surge suppressors and additional auxiliary switches, to enhance functionality and ensure long-term operation. Please refer to the dedicated accessory catalog for ordering information.

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