Siemens 3RT2327-2AP00 Contactor 50A, 4-Pole, AC-1, 230V AC Coil, Spring-Loaded Terminals, Size S0 Original Brand New

The Siemens 3RT2327-2AP00 is a high-performance 4-pole contactor designed for reliable switching of non-inductive or weakly inductive loads (AC-1). With a rated current of 50 A at 400 V and 40 °C, this contactor is ideal for applications requiring robust power control. It features a 230 V AC, 50 Hz coil for efficient operation and comes equipped with 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contact for enhanced control circuit flexibility. The convenient spring-loaded terminals ensure quick and secure wiring, making installation straightforward. Part of the SIRIUS 3RT2 series, the 3RT2327-2AP00 boasts a compact S0 size, making it suitable for space-constrained industrial control panels.

Overview

The Siemens 3RT2327-2AP00 contactor is a crucial component for a variety of industrial power control applications. Built to stringent international standards, it offers exceptional reliability and performance. This 4-pole contactor is specifically designed for AC-1 duty, excelling in switching resistive loads, heating, and general power distribution where frequent switching of motors is not the primary requirement. Its robust construction and integrated auxiliary contacts provide a versatile solution for disconnecting loads, power generation plants, and transfer switching.

Key Features & Benefit

• High Performance AC-1 Switching: Rated for 50 A at 400 V / 40 °C, ensuring reliable control of non-inductive and weakly inductive loads.
• 4-Pole Configuration: Provides comprehensive switching capabilities for multi-phase systems or applications requiring four independent contacts.
• Efficient 230 V AC Coil: Optimized for standard industrial control voltages, ensuring efficient and dependable operation.
• Integrated Auxiliary Contacts (1 NO + 1 NC): Enhances control circuit functionality, allowing for status indication, interlocking, and complex control schemes without additional modules.
• Spring-Loaded Terminals: Facilitates fast, tool-free, and vibration-resistant wiring, reducing installation time and improving reliability.
• Compact Size S0: Space-saving design for efficient panel layout and integration into existing systems.
• Robust Construction: Engineered for durability and long service life in demanding industrial environments.
• Standards Compliance: Adheres to international standards including IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1, ensuring safety and compatibility.
• Electromagnetic Compatibility (EMC): Fulfills requirements for environment category A, minimizing interference with other electronic equipment.
• High Contact Reliability: Auxiliary contacts designed for reliable switching of low voltages and currents (≤ 110 V, ≤ 100 mA), ideal for solid-state circuits.

Function

• Switching of AC-1 Loads: Effectively controls resistive loads, heating elements, and other non-inductive or weakly inductive equipment.
• Load Disconnection: Provides a reliable means to disconnect electrical loads or power generation plants from the grid.
• Transfer Switching: Can be used in transfer switch applications to change between different power sources.
• Control Circuit Integration: Auxiliary contacts enable interlocking, feedback, and signaling within control systems.
• Overload and Short-Circuit Protection Integration: Designed to integrate seamlessly with suitable external protection devices (e.g., thermal overload relays, circuit breakers) for comprehensive system protection.
• Optional Surge Suppression: Can be retrofitted with surge suppressors (RC elements, varistors, diodes) for coil damping and extended contactor life.

Protection Considerations:

• Main Connections: Requires external short-circuit and overload protection. Refer to the technical product data sheet for free-standing contactor protection, or the Digital/Configuration Manuals for load feeder combinations (contactor with overload relay or circuit breaker).
• Auxiliary Connections: Short-circuit and overload protection information available in the technical product data sheet.
• Control Supply Voltage: Protection should comply with relevant standards for control panels. Selection of power supply with current-limiting function or suitable miniature/circuit breakers is recommended, considering inrush and holding currents.
• Overvoltage Protection: 3RT23 contactors can be retrofitted with accessory surge suppressors (RC elements, varistors, diodes). Note: Damping increases break and delay times.

Connection Methods:

• Main Circuit (3RT232): Spring-loaded terminals, with convenient plug-in design for device connector.
• Auxiliary and Control Circuit: Screw terminals.

Motor Protection (When applicable):

• For overload protection of 3RT23 contactors, compatible 3RU2 thermal overload relays or 3RB3 electronic overload relays can be mounted.

Operating Mechanism:

• Type: Conventional AC operating mechanism.
• Control: Via control supply voltage connection A1-A2.

Maintenance & Expansion:

• Solenoid Coil Replacement: Possible for this model.
• Auxiliary Contact Expansion: Basic units can be expanded with additional auxiliary switches, adhering to permissible configurations.
• Accessories & Spare Parts: A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactors.

Application

• Switching of non-inductive or weakly inductive loads (AC-1)
• Disconnecting loads or power generation plants from the grid
• Transfer switching
• Control and automation systems in industrial and commercial settings

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