Siemens 3RT2325-2AP00 Contactor, 4-Pole, AC-1 35A, 230V AC Coil, Spring-Loaded, Size S0 Original Brand New

Siemens 3RT2325-2AP00 Contactor: High-Performance 4-Pole Solution for AC-1 Application 

The Siemens 3RT2325-2AP00 is a robust and reliable 4-pole contactor, specifically designed for switching of weak or non-inductive loads (AC-1 applications). Featuring a 35A current rating at 400V / 40 °C, a 230V AC (50 Hz) operating coil, and convenient spring-loaded terminals, this Size S0 contactor offers exceptional performance and ease of installation in various industrial control and automation systems.

Overview

The Siemens 3RT2325-2AP00 belongs to the SIRIUS 3RT2 contactor series, renowned for its compact design, high contact reliability, and adherence to global industrial standards. This particular model is equipped with one normally open (NO) and one normally closed (NC) auxiliary contact, providing versatile control options. Its spring-loaded terminals ensure fast, secure, and vibration-resistant connections, making it an ideal choice for efficient panel building.

Benefit

• Reliable Switching: Engineered for high contact reliability, especially crucial for switching low voltages and currents.
• Efficient Installation: Spring-loaded terminals offer quick, tool-free wiring, reducing installation time and effort.
• Space-Saving Design: Compact Size S0 footprint optimizes panel space.
• Enhanced Safety: Designed with comprehensive protection guidelines for device connections against short circuits, overloads, and overvoltages.
• Versatile Application: Ideal for disconnecting loads, power generation plants from the grid, and transfer switching.
• Modular Expandability: Can be easily expanded with additional auxiliary switches to meet evolving control requirements.
• Long Lifespan: Built with Siemens’ renowned quality and robust materials for extended operational life.

Function

The Siemens 3RT2325-2AP00 contactor primarily functions as an electrical switch, enabling the remote control of power circuits for non-inductive loads. Its key functions include:

• Switching AC-1 Loads: Efficiently controls weak or non-inductive loads such as resistive heaters, lighting circuits, or capacitive banks.
• Load Disconnection: Provides a reliable means to disconnect loads or power generation plants from the main grid.
• Transfer Switching: Facilitates the seamless transfer between different power sources.
• Auxiliary Signaling: The integrated 1 NO + 1 NC auxiliary contacts provide feedback on the contactor’s status to control systems or for interlocking functions.
• Control Circuit Integration: Designed for easy integration into control circuits with appropriate protection measures.

Technical Details and Protection Guidelines:

Protection of Device Connections: All connections, including main, auxiliary, and control supply voltage connections, must be protected against overload and short circuits using suitable measures. Refer to the technical product data sheet and configuration manuals for detailed guidance on:

• Main Circuit Protection: Information on protecting a free-standing contactor or device combinations (contactor with overload relay or circuit breaker).
• Auxiliary Circuit Protection: Specific guidelines for protecting auxiliary contacts.
• Control Supply Voltage Protection: Recommendations for selecting suitable power supplies with current-limiting functions and appropriate protection devices like miniature circuit breakers.

Overvoltage Protection at Control Supply: The 3RT23 contactors can be retrofitted with surge suppressors (RC elements, varistors, diodes, or diode assemblies) to dampen opening surges in the coil. Note that damping may slightly increase break times and delay times of auxiliary contacts.

Connection Methods:

• Main Circuit: Features convenient spring-loaded terminals.
• Auxiliary and Control Circuit: Utilizes screw terminals for reliable connections.

Contact Reliability of Auxiliary Contacts: The auxiliary contacts are engineered for high contact reliability, making them suitable for switching voltages $\le$ 110 V and currents $\le$ 100 mA, and especially for solid-state circuits with currents $\ge$ 1 mA at voltages of 17 V and higher.

Motor Protection Compatibility: While this specific model is for AC-1 applications, it’s part of the 3RT23 series, which can be combined with 3RU2 thermal overload relays or 3RB3 electronic overload relays for motor protection in AC-3 applications.

Operating Mechanism: This contactor features a conventional AC operating mechanism. Control is via the A1-A2 control supply voltage connection with varying operating ranges.

Maintenance and Expansion:

• Solenoid Coil Replacement: The solenoid coil can be replaced.
• Auxiliary Contact Expansion: The basic unit comes with integrated auxiliary contacts (1 NO + 1 NC) and can be expanded with additional auxiliary switches. Refer to the auxiliary switches overview for permissible configurations.

Accessories and Spare Parts: A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactors to enhance functionality and simplify maintenance.

Application

The Siemens 3RT2325-2AP00 contactor is ideally suited for:

• Four-pole switching of weak or non-inductive loads (AC-1).
• Disconnecting various loads from the grid.
• Implementing transfer switching functions in electrical systems.

For more information on the Siemens 3RT2325-2AP00 contactor or to explore our extensive range of industrial automation products, please visit Turll.