Siemens 3RT2326-1AN20 Contactor 40A, 4-Pole, AC-1, 220V AC Coil, S0 Size, Screw Terminal Original Brand New

Siemens 3RT2326-1AN20 Contactor – Reliable 4-Pole AC-1 Switching for Industrial Applications

The Siemens 3RT2326-1AN20 is a high-performance 4-pole contactor from the trusted SIRIUS 3RT2 series, engineered for robust and efficient switching of AC-1 (non-inductive) loads up to 40 Amperes. Designed for industrial control environments, this contactor features a 220V AC (50/60 Hz) coil, integrated 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts, and convenient screw terminals for secure wiring. Its compact S0 size makes it suitable for a wide range of control panel applications.

Overview

The Siemens 3RT2326-1AN20 contactor is a crucial component for controlling resistive loads in various industrial and commercial settings. Built to exacting standards, it ensures reliable operation and adherence to global safety requirements. This contactor is part of the versatile SIRIUS modular system, offering seamless integration with other Siemens control gear.

Key Benefit

• Reliable Performance: Designed for dependable switching of AC-1 loads, ensuring stable operation of non-inductive circuits.
• Enhanced Safety: Conforms to international standards like IEC 60947, providing peace of mind regarding operational safety.
• Versatile Application: Ideal for four-pole switching of resistive loads, disconnecting loads, power generation plants, and transfer switching applications.
• Integrated Auxiliary Contacts: Features 1 NO + 1 NC auxiliary contacts for flexible control and signaling circuits.
• Easy Installation: Equipped with user-friendly screw terminals for straightforward and secure wiring.
• Compact Design: S0 size optimizes space within control cabinets.
• High Contact Reliability: Auxiliary contacts are designed for high contact reliability, even at low voltages and currents, making them suitable for solid-state circuits.
• System Compatibility: Seamlessly integrates with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays for comprehensive motor protection.

Functions & Features

• Contactor Type: AC-1 (for non-inductive or slightly inductive loads)
• Rated Current: 40 A (at 400 V / 40 °C)
• Number of Poles: 4-pole
• Control Supply Voltage: 220 V AC, 50/60 Hz
• Auxiliary Contacts: 1 NO + 1 NC (integrated in the basic unit)
• Terminal Type: Screw terminal (main and auxiliary circuits)
• Size: S0
• Standards Compliance: IEC 60947-1, IEC 60947-4-1, IEC 60947-5-1 (for auxiliary switches)
• Electromagnetic Compatibility: Fulfills requirements for environment category A.
• Coil Damping (Optional): Can be retrofitted with surge suppressors (RC elements, varistors, diodes) for damping opening surges, ordered separately.
• Main Circuit Connections: Screw terminals for secure and robust connections.
• Overload Protection Integration: Compatible with 3RU2 thermal and 3RB3 electronic overload relays for load protection.
• Operating Mechanism: Conventional AC operating mechanism.
• Auxiliary Switch Expansion: Basic unit can be expanded with additional auxiliary switches (permissible configuration must be observed).
• Solenoid Coil Replacement: Solenoid coil can be replaced if needed.

Application

The Siemens 3RT2326-1AN20 contactor is ideally suited for:

• Four-pole switching of weak or non-inductive loads (AC-1)
• Disconnecting loads or power generation plants from the grid
• Transfer switching applications
• Integration into control panels, distribution boards, and machine control systems.

Protection & Safety Guidelines:

For optimal performance and safety, proper protection of device connections is crucial.

• Short-circuit and Overload Protection (Main Connections): Refer to the technical product data sheet for free-standing contactor protection. For device combinations (contactor with overload relay or circuit breaker), consult the Digital and Standard Configuration Manuals for load feeders.
• Short-circuit and Overload Protection (Auxiliary Connections): Specific information is available in the technical product data sheet.
• Short-circuit and Overload Protection (Control Supply Voltage): Adhere to relevant standards for control panel configuration. Consider suitable power supplies with current-limiting functions and proper cable dimensioning. For further recommendations, see the “Control panel tip – Selecting and dimensioning suitable power supplies quickly and reliably” guide.
• Overvoltage Protection (Control Supply Voltage): For 3RT23 contactors, surge suppressors (RC elements, varistors, diodes) can be ordered as accessories to dampen opening surges.

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