Siemens 3RT2327-2AB00 SIRIUS Contactor 4-Pole, 50A, 24V AC, Spring-Loaded Terminal, Size S0 Original Brand New

Overview

The Siemens 3RT2327-2AB00 is a robust and reliable SIRIUS contactor designed for efficient switching of non-inductive or weakly inductive loads (AC-1). This 4-pole contactor is rated for 50A at 400V / 40°C, making it ideal for various industrial applications. Featuring a 24V AC, 50 Hz operating mechanism and convenient spring-loaded terminals, it offers ease of installation and maintenance. The compact Size S0 design includes integrated 1 NO + 1 NC auxiliary contacts for enhanced functionality and monitoring. Built to IEC 60947 standards, this contactor ensures high contact reliability and electromagnetic compatibility (EMC) in diverse environments.

Key Features & Function

• AC-1 Switching: Specifically engineered for switching AC-1 loads, perfect for resistive heating, lighting, and distribution systems.
• 4-Pole Design: Provides comprehensive control for multi-phase circuits or applications requiring isolated switching.
• High Current Rating: Handles up to 50A at 400V / 40°C, suitable for demanding applications.
• 24V AC Coil: Standard 24V AC, 50 Hz control voltage for widespread compatibility with control systems.
• Integrated Auxiliary Contacts: Comes with 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts, crucial for interlocking, signaling, and control circuits.
• Spring-Loaded Terminals: Offers quick, reliable, and vibration-resistant wiring connections, reducing installation time and effort.
• Compact Size S0: Space-saving design for efficient panel layout and integration into existing systems.
• Standards Compliant: Meets rigorous international standards including IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1, ensuring safety and performance.
• Electromagnetic Compatibility (EMC): Fulfills requirements for environment category A, providing reliable operation in industrial settings.
• Motor Protection Compatibility: Seamlessly integrates with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays for comprehensive motor protection (when used in AC-3 applications with special versions).
• Accessory Expandability: Can be expanded with additional auxiliary switches and surge suppressors (RC elements, varistors, diodes) for enhanced functionality and protection.

Benefit

• Reliable Performance: Siemens’ renowned quality ensures long-term, stable operation in demanding industrial environments.
• Enhanced Safety: Built-in protection against short circuits and overloads for both main and auxiliary connections, adhering to stringent safety standards.
• Simplified Installation: Spring-loaded terminals reduce wiring time and improve connection reliability, leading to faster commissioning.
• Space Optimization: Compact S0 size allows for efficient use of control panel space.
• Versatile Applications: Ideal for a wide range of AC-1 applications, including heating, lighting, power distribution, and general load switching.
• Future-Proof Design: Compatibility with various accessories allows for customization and adaptation to evolving system requirements.
• High Contact Reliability: Auxiliary contacts are designed for reliable switching even at low voltages and currents, making them suitable for solid-state circuits.

Application

The Siemens 3RT2327-2AB00 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
• Heating systems
• Lighting control
• Power distribution circuits
• General industrial control applications

Protection Consideration

• Main Connections: Requires suitable short-circuit and overload protection. Refer to the technical product data sheet or Digital/Configuration Manuals for load feeders when combining with overload relays or circuit breakers.
• Auxiliary Connections: Short-circuit and overload protection details are available in the technical product data sheet.
• Control Supply Voltage: Protection should align with relevant standards for control panel configuration. Consider power supplies with current-limiting functions or miniature circuit breakers.
• Overvoltage Protection: Can be retrofitted with surge suppressors (RC elements, varistors, diodes) for damping opening surges in the coil (ordered separately). Note: Damping increases break times.

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