Siemens SIRIUS 3RT2325-1AG60 Contactor 4-Pole AC-1, 35A, 100V AC Coil, S0 Size Original Brand New

Overview

The Siemens SIRIUS 3RT2325-1AG60 is a high-performance 4-pole AC-1 contactor, meticulously engineered for switching non-inductive or weakly inductive loads up to 35 Amperes at 400 V / 40 °C. Part of the renowned SIRIUS 3RT2 product family, this robust S0 size contactor is an essential component for diverse industrial applications, including power distribution, load disconnection, and transfer switching. Its integrated 1 NO + 1 NC auxiliary contacts and reliable screw terminals offer versatile connectivity and control options.

Key Features & Function

• 4-Pole Design: Specifically designed for four-pole switching of circuits, making it ideal for applications requiring multiple line disconnections.
• AC-1 Utilization Category: Optimized for switching non-inductive or slightly inductive loads, such as resistance furnaces, heaters, or distribution circuits.
• High Current Rating: Handles up to 35 Amperes at 400V / 40 °C, ensuring robust performance in demanding electrical systems.
• Versatile Coil Voltage: Equipped with a 100V AC coil (50 Hz) and compatible with 100-110V AC (60 Hz), providing flexibility in various power systems.
• Integrated Auxiliary Contacts: Features 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contact, allowing for immediate feedback and control circuit integration.
• Screw Terminals: Ensures secure and straightforward wiring connections for both main and auxiliary circuits.
• Compact Size S0: Space-efficient design suitable for integration into a wide range of control panels and enclosures.
• Robust Construction: Built to Siemens’ high-quality standards, ensuring reliability and a long operational lifespan.

Benefit

• Reliable Performance: Designed to the highest industry standards (IEC 60947), guaranteeing consistent and safe operation.
• Enhanced Control: Integrated auxiliary contacts provide immediate feedback for interlocking and control circuit applications, simplifying system design.
• Ease of Installation: Screw terminals facilitate quick and secure wiring, reducing installation time and effort.
• Space Optimization: The compact S0 size allows for efficient use of panel space, especially in crowded industrial environments.
• Versatile Application: Ideal for a broad spectrum of AC-1 applications, including HVAC, lighting control, and general load switching.
• Long Service Life: Siemens’ reputation for quality ensures durability and reduced maintenance needs.
• System Integration: Compatible with other SIRIUS components, simplifying the design of comprehensive motor control and power distribution solutions.

Standard & Compliance

The Siemens 3RT2325-1AG60 Contactor adheres to the following international standards:

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

Technical Details

Protection of Device Connections: All connections should be protected against overload and short circuits. Refer to the technical product data sheet for specific guidance on main connections. For device combinations (contactor with overload relay or circuit breaker), consult the Digital or standard Configuration Manual for load feeders. Auxiliary connections also require protection, details for which are in the technical product data sheet. Control supply voltage connections should align with relevant standards for control panel configuration and cabling, considering load characteristics (inrush current, holding power) and potentially using current-limiting power supplies or miniature/circuit breakers.

Overvoltage Protection at Control Supply: For 3RT23 contactors like the 3RT2325-1AG60, surge suppressors (RC elements, varistors, diodes) can be retrofitted as accessories to dampen opening surges in the coil. Note that damping may increase contactor break times and delay times of NO/NC contacts.

Connection Methods:

• Main Circuit: This 3RT232 contactor features reliable screw terminals.
• Auxiliary and Control Circuit: Utilizes convenient screw terminals.

Electromagnetic Compatibility (EMC): The contactor meets requirements for environment category A. When used with frequency converters, specific configuration notes from the Equipment Manual must be observed.

Contact Reliability of Auxiliary Contacts: The auxiliary contacts of 3RT23 contactors ensure high contact reliability, especially suitable for switching low voltages (≤ 110 V) and currents (≤ 100 mA), and for solid-state circuits with currents ≥ 1 mA at 17 V and higher.

Motor Protection Compatibility: For overload protection, the 3RT2325-1AG60 can be paired with 3RU2 thermal overload relays or 3RB3 electronic overload relays, which can be directly mounted onto the contactor.

Operating Mechanism: This 3RT23 contactor is equipped with a conventional AC operating mechanism, controlled via the A1-A2 control supply voltage connection. Refer to the technical data sheet for detailed operating ranges.

Maintenance & Expandability:

• Solenoid Coil: The solenoid coil for this 3RT23 contactor can be replaced.
• Auxiliary Switches: The basic unit of the 3RT2325-1AG60 includes one integrated NO + one integrated NC auxiliary contact. It can be further expanded with additional auxiliary switches, following permissible configurations.

Application

The Siemens 3RT2325-1AG60 Contactor is perfectly suited for applications requiring:

• Four-pole switching of weak or non-inductive loads (AC-1): Ideal for resistive loads such as heating elements, lighting circuits, or distribution boards.
• Disconnecting loads or power generation plants from the grid: Provides a reliable means of isolation for safety and maintenance.
• Transfer switching: Can be used in conjunction with other contactors for switching between different power sources or loads.

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