Siemens 3RT2326-2AP00 SIRIUS Contactor AC-1, 40A, 4-Pole, 230V AC, Spring-Loaded, Size S0 Original Brand New

Overview

The Siemens 3RT2326-2AP00 is a robust and reliable SIRIUS 3RT23 series contactor, engineered to meet the demands of modern industrial automation. This 4-pole AC-1 contactor is specifically optimized for switching resistive, weakly inductive, or non-inductive loads, making it ideal for applications such as heating systems, lighting circuits, and power distribution in general.

With a rated current of 40A (at 400V / 40 °C) and a 230V AC, 50 Hz operating coil, it offers dependable performance. The integrated 1 NO + 1 NC auxiliary contacts provide essential feedback and control options, while the innovative spring-loaded terminals facilitate quick, secure, and vibration-resistant wiring. As a Size S0 device, it balances powerful capabilities with a compact footprint, suitable for a wide range of control panel configurations.

Benefit

• Reliable Performance: Designed for AC-1 applications, ensuring stable and efficient switching of non-inductive loads.
• Space-Saving Design: Its Size S0 footprint allows for optimized panel layouts, especially where space is at a premium.
• Fast & Secure Wiring: Spring-loaded terminals provide quick, tool-free, and highly reliable connections, reducing installation time and maintenance.
• Enhanced Control & Feedback: Integrated 1 NO + 1 NC auxiliary contacts offer versatile options for interlocking, signaling, and control circuits.
• High Durability: Built to Siemens’ rigorous quality standards, ensuring long operational life and resistance to industrial environments.
• Comprehensive Protection Options: Compatible with a range of Siemens protection devices (e.g., 3RU2 thermal overload relays, 3RB3 electronic overload relays) for complete circuit protection.

Function

The Siemens 3RT2326-2AP00 contactor serves as a crucial switching element in electrical circuits, primarily for:

• Four-pole switching of weak or non-inductive loads (AC-1): Efficiently controls resistive loads like heaters, lighting, and capacitor banks.
• Disconnecting loads or power generation plants from the grid: Provides a robust means to isolate circuits when required.
• Transfer switching: Can be integrated into systems requiring switching between different power sources or loads.

Standards & Compliance

This contactor fully complies with major international standards, ensuring safety, reliability, and interoperability:

• IEC 60947-1 (General Rules)
• IEC 60947-4-1 (Contactors and Motor-starters)
• IEC 60947-5-1 (Control Circuit Devices and Switching Elements – Auxiliary Switches)

Protection Features:

• Short-circuit and overload protection of main connections: Requires suitable external protection measures (e.g., circuit breakers, fuses). Refer to the technical product data sheet for free-standing contactor protection, or the Digital/Configuration Manuals for device combinations (contactor with overload relay or circuit breaker).
• Short-circuit and overload protection of auxiliary connections: Detailed information available in the technical product data sheet.
• Short-circuit and overload protection of control supply voltage: Selection of suitable power supplies with current-limiting functions and appropriate protection devices is crucial, considering inrush current peaks and holding power.
• Overvoltage protection: The 3RT2326-2AP00 can be retrofitted with external surge suppressors (RC elements, varistors, diodes, or diode assemblies) to dampen opening surges in the coil.

Connection Methods:

• Main Circuit: Features convenient spring-loaded terminals, enabling quick and reliable connection of main power cables.
• Auxiliary and Control Circuit: Equipped with reliable screw terminals for the auxiliary and control wiring.

Electromagnetic Compatibility (EMC): The contactor fulfills the requirements for environment category A, ensuring reliable operation in typical industrial settings. For applications involving frequency converters, specific configuration notes in the Equipment Manual must be observed.

Contact Reliability of Auxiliary Contacts: The auxiliary contacts of the 3RT23 series are designed for high contact reliability, particularly suitable for switching low voltages ($\le$ 110 V) and low currents ($\le$ 100 mA), and ideal for solid-state circuits with currents $\ge$ 1 mA at voltages of 17 V and higher.

Motor Protection Compatibility: While primarily an AC-1 contactor, for applications requiring motor protection, the Siemens 3RT2326-2AP00 can be seamlessly combined with:

• 3RU2 thermal overload relays: For standard thermal overload protection.
• 3RB3 electronic overload relays: For advanced electronic overload protection.

Operating Mechanism: This version features a conventional AC operating mechanism, controlled via the A1-A2 control supply voltage connection with varying operating ranges (refer to the technical product data sheet for specifics).

Maintainability & Expandability:

• Solenoid Coil Replacement: The solenoid coil for the 3RT2326-2AP00 is replaceable, extending the lifespan of the unit.
• Auxiliary Contact Expansion: The basic unit comes with 1 NO + 1 NC auxiliary contacts. All 3RT23 basic units can be expanded with additional auxiliary switches, allowing for flexible adaptation to complex control requirements. Refer to “Auxiliary switches, instantaneous → Overview” for detailed fitting information.

Accessories and Spare Parts: A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactors and 3RH2 contactor relays, including surge suppressors, additional auxiliary switches, and various connection components. Please refer to the dedicated Siemens accessories catalog or contact Turll for ordering data.

Application

The Siemens 3RT2326-2AP00 contactor is a versatile component ideal for applications such as:

• Switching of resistive loads (e.g., heating elements, ovens).
• Controlling lighting systems in commercial and industrial buildings.
• Managing capacitor banks for power factor correction.
• Integration into power distribution boards for general load switching.
• Non-inductive industrial processes.

For more products and detailed technical documentation, please visit Turll.