Siemens 3RT2325-2AG20 Contactor – High-Performance 4-Pole Solution for AC-1 Application
The Siemens 3RT2325-2AG20 is a robust and reliable 4-pole contactor designed for efficient switching of weak or non-inductive loads (AC-1) up to 35 Amperes at 400 V / 40 °C. Part of the trusted SIRIUS 3RT2 series, this contactor offers exceptional performance and versatility for a wide range of industrial applications, including disconnecting loads, power generation plants from the grid, and transfer switching.
Overview
This 4-pole contactor features a 110 V AC, 50/60 Hz operating mechanism, ensuring reliable control in diverse electrical systems. Equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, it provides essential feedback and interlocking capabilities. The innovative spring-loaded terminals simplify wiring, reduce installation time, and offer vibration-resistant connections. With a compact Size S0 footprint, the 3RT2325-2AG20 is an ideal choice for space-constrained control panels.
Benefit
- Reliable AC-1 Switching: Specifically designed for switching non-inductive or weakly inductive loads, ensuring long operational life.
- Enhanced Control & Feedback: Integrated 1 NO + 1 NC auxiliary contacts provide crucial status indication and enable complex control circuits.
- Fast & Secure Wiring: Spring-loaded terminals offer quick, tool-free connections and excellent resistance to vibration, improving system reliability.
- Compact Design (Size S0): Optimizes panel space, allowing for higher component density in control cabinets.
- Broad Compatibility: Meets international standards (IEC 60947) and is compatible with a range of Siemens SIRIUS accessories for expanded functionality.
- Overvoltage Protection Ready: Can be retrofitted with surge suppressors (RC elements, varistors, diodes) for enhanced coil protection.
Function
- Main Circuit Switching: Controls 4-pole AC-1 loads up to 35A.
- Auxiliary Contact Operation: Provides instantaneous switching feedback for control circuits.
- Spring-Loaded Connection: Ensures secure electrical connections for main and auxiliary circuits.
- Coil Control: Activated by a 110 V AC, 50/60 Hz control supply voltage.
Standards & Protection: The Siemens 3RT2325-2AG20 complies with rigorous international standards, including IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches), ensuring high levels of safety and performance.
Connection Methods:
- Main Circuit: Features convenient spring-loaded terminals, with a plug-in design for device connectors.
- Auxiliary and Control Circuit: Equipped with reliable screw terminals.
Electromagnetic Compatibility (EMC): The contactor fulfills requirements for environment category A, ensuring stable operation in industrial environments.
Contact Reliability: Auxiliary contacts are highly reliable, suitable for switching voltages 110 V and currents 100 mA, and specifically designed for solid-state circuits with currents 1 mA at voltages of 17 V and higher.
Motor Protection Integration: For overload protection, this 3RT23 contactor seamlessly integrates with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays.
Operating Mechanism: This version features a conventional AC operating mechanism for precise control. Coil replacement is possible for the 3RT2325-2AG20.
Auxiliary Contact Expansion: The basic unit includes one integrated auxiliary contact (1 NO + 1 NC) and can be further expanded with additional auxiliary switches for increased functionality, adhering to permissible configurations.
Application
The Siemens 3RT2325-2AG20 contactor is ideal for:
- Four-pole switching of weak or non-inductive loads (AC-1)
- Disconnecting loads or power generation plants from the grid
- Transfer switching in various industrial and commercial settings.
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