Siemens 3RT2325-2AP60 SIRIUS Contactor AC-1, 35A, 4-Pole, 220V/240V AC, Spring-Loaded, Size S0 Original Brand New

Overview

The Siemens 3RT2325-2AP60 is a high-performance SIRIUS contactor engineered for reliable switching of weak or non-inductive loads (AC-1 applications). This 4-pole contactor is rated for 35 A at 400 V / 40 °C, making it ideal for a wide range of industrial and commercial applications. Featuring a versatile 220 V AC (50 Hz) / 240 V AC (60 Hz) coil voltage, integrated 1 NO + 1 NC auxiliary contacts, and convenient spring-loaded terminals, the 3RT2325-2AP60 offers efficient and secure power control within a compact S0 size. Designed to meet stringent IEC standards, it ensures robust operation and easy integration into new or existing control panel.

Function

• Four-Pole Switching (AC-1): Specifically designed for switching of weak or non-inductive loads, ensuring efficient power control in applications like heating, lighting, and general resistive loads.
• Load Disconnection: Capable of disconnecting loads or power generation plants from the electrical grid, providing a critical safety and operational function.
• Transfer Switching: Suitable for transfer switching applications, enabling seamless transition between different power sources or load configurations.
• Integrated Auxiliary Contacts (1 NO + 1 NC): Provides essential feedback and control signals for interlocking, status indication, and complex control circuits.
• Coil Damping (Optional): Can be retrofitted with RC elements, varistors, diodes, or diode assemblies for damping opening surges, extending coil life and improving system stability (accessories sold separately).

Benefit

• Reliable Performance: Built to IEC 60947 standards, guaranteeing high contact reliability and long operational life, even in demanding industrial environments.
• Easy Installation: Spring-loaded terminals simplify wiring, reducing installation time and ensuring secure, vibration-resistant connections.
• Space-Saving Design: Compact S0 size allows for efficient use of panel space, optimizing control cabinet layouts.
• Versatile Control Voltage: Supports both 220 V AC (50 Hz) and 240 V AC (60 Hz) coil voltages, offering flexibility in global applications.
• Enhanced Safety: Provides a foundation for comprehensive protection against short circuits, overloads, and overvoltage when combined with appropriate protection devices (e.g., 3RU2 thermal overload relays or 3RB3 electronic overload relays).
• Scalability: Compatible with a range of Siemens SIRIUS accessories, including additional auxiliary switches and surge suppressors, allowing for flexible system expansion and customization.
• High Contact Reliability for Low Voltages: Auxiliary contacts are particularly suitable for switching voltages $\le$ 110 V and currents $\le$ 100 mA, ensuring dependable operation in sensitive electronic circuits.

Standard

The Siemens 3RT2325-2AP60 contactor adheres to the following international standards:

• IEC 60947‑1 (Low-voltage switchgear and controlgear – General rules)
• IEC 60947‑4‑1 (Contactors and motor-starters – Electromechanical contactors and motor-starters)
• IEC 60947‑5‑1 (Control circuit devices and switching elements – Electromechanical control circuit devices)

Protection and Safety Consideration

All connections must be protected against overload and short circuits. For detailed information on protection of free-standing contactors, refer to the technical product data sheet. For device combinations (e.g., contactor with overload relay or circuit breaker), consult the Digital or standard Configuration Manuals for load feeders.

Protection against overvoltage at the control supply voltage connection can be achieved by retrofitting with suitable surge suppressors (RC elements, varistors, diodes).

Connection Method

• Main Circuit: Utilizes robust spring-loaded terminals, providing a secure and reliable connection for power cables.
• Auxiliary and Control Circuit: Equipped with spring-loaded terminals for easy and secure wiring of control signals.

Motor Protection

For overload protection, the 3RT23 contactors are compatible with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays, which can be directly mounted to form a comprehensive motor feeder solution.

Operating Mechanism

This contactor features a conventional AC operating mechanism, controlled via the A1-A2 terminals with specified operating ranges (refer to technical data sheet for precise details).

Auxiliary Contact Expansion

The basic unit includes integrated auxiliary contacts (1 NO + 1 NC). The contactor can be further expanded with additional auxiliary switches for increased control flexibility, adhering to permissible configurations.

Accessories and Spare Part

A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactors, including surge suppressors, additional auxiliary switches, and replacement solenoid coils. Please refer to the Siemens SIRIUS accessories catalog for detailed ordering information.

Application Example

• Switching heating elements and lighting circuits.
• Controlling resistive loads in industrial processes.
• Disconnecting sections of an electrical network.
• Transferring power between different supply sources.
• Integration into control panels for various automation tasks.

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