Siemens 3RT2326-2AP60 SIRIUS Contactor AC-1, 40A, 4-Pole, Spring-Loaded, S0 Original Brand New

Overview: Siemens 3RT2326-2AP60 SIRIUS Power Contactor

The Siemens 3RT2326-2AP60 is a high-performance SIRIUS 3RT23 series power contactor designed for reliable switching of AC-1 loads. This 4-pole contactor is rated for 40 A at 400 V / 40 °C, making it ideal for a wide range of industrial applications. Featuring a versatile control voltage of 220 V AC (50 Hz) / 240 V AC (60 Hz) and equipped with convenient spring-loaded terminals, the 3RT2326-2AP60 ensures quick and secure wiring. Its compact S0 size and integrated 1 NO + 1 NC auxiliary contacts offer flexibility and efficiency in your control panel designs. Built to IEC standards, this contactor is a robust and dependable choice for general-purpose switching, power distribution, and disconnecting non-inductive loads.

Key Benefit

• Reliable AC-1 Switching: Specifically designed for switching non-inductive or weakly inductive loads (AC-1), ensuring consistent performance.
• Space-Saving Design: Compact S0 size allows for efficient use of space within control cabinets.
• Fast & Secure Wiring: Spring-loaded terminals provide quick, vibration-proof connections, reducing installation time and maintenance.
• Integrated Auxiliary Contacts: Comes with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact for enhanced control and signaling capabilities.
• Global Standard Compliance: Meets IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 standards, ensuring high quality and compatibility.
• Versatile Control: Operates on common industrial voltages (220 V AC, 50 Hz / 240 V AC, 60 Hz).
• Expandable Functionality: Compatible with a range of Siemens SIRIUS accessories for surge suppression, motor protection, and additional auxiliary switches.

Function

The Siemens 3RT2326-2AP60 contactor serves as a crucial component in electrical control systems, performing the following key functions:

• Four-Pole Switching: Capable of making and breaking circuits for four-pole applications, commonly used for three-phase loads with a neutral, or for switching multiple independent single-phase circuits.
• Load Disconnection: Effectively disconnects weak or non-inductive loads, such as resistive heaters, lighting circuits, or capacitive banks, from the power grid.
• Power Generation Plant Isolation: Suitable for isolating power generation plants or specific sections of a grid for maintenance or operational changes.
• Transfer Switching: Can be integrated into systems for transfer switching applications, enabling the selection between different power sources.
• Control Circuit Integration: Its auxiliary contacts (1 NO + 1 NC) are used within control circuits for interlocking, signaling, or activating other components.

Standards & Protection

The Siemens 3RT2326-2AP60 adheres to 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. Proper protection of all connections is paramount.

• Short-Circuit and Overload Protection (Main Connections): Refer to the technical product data sheet for details on protecting a free-standing contactor. For device combinations (contactor with overload relay or circuit breaker), consult the Digital Configuration Manual for load feeders or Configuration Manual for load feeders.
• Short-Circuit and Overload Protection (Auxiliary Connections): Specific information regarding the protection of auxiliary contacts is available in the technical product data sheet.
• Short-Circuit and Overload Protection (Control Supply Voltage): Adherence to relevant standards for control panel configuration is essential. Solutions include using power supplies with current-limiting functions or suitable miniature/circuit breakers. Consult the “Control panel tip – Selecting and dimensioning suitable power supplies quickly and reliably” for further recommendations.
• Overvoltage Protection (Control Supply Voltage): This 3RT23 contactor can be retrofitted with external surge suppressors (RC elements, varistors, diodes, or diode assemblies) to damp opening surges in the coil. Note that damping may increase break and delay times.

Connection Methods:

• Main Circuit: Features convenient spring-loaded terminals for the main power connections, ensuring quick and reliable wiring.
• Auxiliary and Control Circuit: Utilizes robust screw terminals for secure connections in the auxiliary and control circuits.

Contact Reliability of Auxiliary Contacts:

For reliable switching of low voltages (≤ 110 V) and low currents (≤ 100 mA), the integrated auxiliary contacts are ideal, especially for solid-state circuits with currents ≥ 1 mA at 17 V and higher, guaranteeing high contact reliability.

Electromagnetic Compatibility:

The 3RT2326-2AP60 contactor meets the requirements for environment category A, indicating its suitability for industrial environments. When used with frequency converters, specific configuration notes in the Equipment Manual must be observed.

Motor Protection Compatibility:

While primarily for AC-1 loads, the 3RT2326-2AP60 can be paired with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays to provide comprehensive overload protection for motor applications if needed.

Operating Mechanism:

This contactor features a conventional AC operating mechanism, controlled via the A1-A2 control supply voltage connection.

Maintenance & Accessories:

• Solenoid Coil Replacement: The solenoid coil for the 3RT2326-2AP60 is replaceable, extending the lifespan of the contactor.
• Auxiliary Contact Expansion: The basic unit’s integrated auxiliary contacts can be expanded with additional auxiliary switches, allowing for greater control complexity. Refer to the “Auxiliary switches, instantaneous → Overview” for detailed fitting information.
• Accessories & Spare Parts: A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactors, including surge suppressors, additional auxiliary switches, and bus connectors. Visit Turll for a comprehensive selection.

Application

The Siemens 3RT2326-2AP60 contactor is versatile and suitable for:

• Four-pole switching of weak or non-inductive loads (AC-1): Ideal for resistive loads, heating elements, and lighting.
• Disconnecting loads or power generation plants from the grid: Used for isolation in various electrical systems.
• Transfer switching: Facilitates switching between different power sources in automated systems.

For more products and detailed information, please visit Turll.