Siemens SIRIUS 3RT2326-2BG40 4-Pole Contactor, 40A AC-1, 125V DC Coil, Spring-Loaded, Size S0 Original Brand New

Siemens SIRIUS 3RT2326-2BG40 4-Pole Contactor: Robust & Reliable Switching for AC-1 Application

The Siemens 3RT2326-2BG40 is a high-performance 4-pole power contactor from the renowned SIRIUS 3RT23 series, meticulously engineered for efficient and reliable switching of weak or non-inductive loads (AC-1). Designed to meet rigorous industrial demands, this contactor offers a robust solution for diverse applications, including disconnecting loads, power generation plants from the grid, and transfer switching.

Key Features & Benefit

• AC-1 Rating: Specifically designed for switching non-inductive or slightly inductive loads, making it ideal for heating applications, lighting systems, and distribution circuits.
• High Current Capacity: Rated for 40 Amperes at 400V/40°C, ensuring reliable operation under significant electrical loads.
• 4-Pole Configuration: Provides versatile switching capabilities for multi-phase applications.
• 125V DC Coil: Features a highly efficient 125V DC operating mechanism, offering precise and reliable control.
• Integrated Auxiliary Contacts: Equipped with 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contact, providing essential feedback and interlocking functionalities for control circuits.
• Spring-Loaded Terminals: Offers quick, easy, and secure wiring connections, reducing installation time and improving reliability, especially in vibration-prone environments.
• Compact Size S0: Optimized for space-saving integration within control panels and electrical cabinets.
• Durable & Compliant: Manufactured to strict quality standards and compliant with international norms like IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches), ensuring long-term performance and safety.

Comprehensive Protection Features:

The Siemens 3RT2326-2BG40 contactor is designed with comprehensive protection in mind:

• Short-Circuit & Overload Protection: All connections (main, auxiliary, and control supply) require appropriate short-circuit and overload protection. 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).
• Control Supply Voltage Protection: Consider current-limiting power supplies or suitable protection devices. For advanced recommendations, consult Siemens’ “Control panel tip – Selecting and dimensioning suitable power supplies quickly and reliably.”
• Overvoltage Protection: The 3RT23 contactors can be retrofitted with accessory surge suppressors (RC elements, varistors, diodes, or diode assemblies) to dampen opening surges in the coil, protecting sensitive components.

Versatile Connection Method

• Main Circuit: Features spring-loaded terminals, providing a convenient and robust connection.
• Auxiliary and Control Circuit: Utilizes reliable screw terminals for secure wiring.

Electromagnetic Compatibility (EMC):

The contactor fulfills the requirements for environment category A, ensuring stable operation in various industrial settings. For use with frequency converters, specific configuration notes in the Equipment Manual should be observed.

High Contact Reliability:

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

Motor Protection Integration:

For robust motor protection against overload, the 3RT2326-2BG40 can be seamlessly combined with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays.

Operating Mechanism & Maintenance:

This contactor utilizes a reliable DC operating mechanism. Replacement of the solenoid coil is possible, extending the lifespan of your investment.

Expandable Auxiliary Contacts:

The basic unit comes with 1 NO + 1 NC integrated auxiliary contacts and can be further expanded with additional auxiliary switches (refer to “Auxiliary switches, instantaneous → Overview” for permissible configurations).

Accessories & Spare Parts:

A wide range of accessories and spare parts are available to complement and maintain your Siemens 3RT2326-2BG40 contactor. (See Accessories and spare parts for SIRIUS 3RT2 contactors).

Application

The Siemens 3RT2326-2BG40 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

For applications involving motor-driven loads (AC-3), special versions of the 3RT23 contactors are also available.

For more Siemens industrial control products and solution, visit Turll.com.