Siemens SIRIUS 3RT2327-1AB00 4-Pole AC-1 Contactor, 50A, 24V AC, S0 Size, Screw Terminal Original Brand New

Overview

The Siemens SIRIUS 3RT2327-1AB00 is a high-performance 4-pole AC-1 contactor designed for robust and reliable switching of resistive and non-inductive loads. Part of the SIRIUS 3RT2 series, this contactor offers a 50A current rating at 400V / 40°C, making it ideal for diverse industrial applications. Featuring a 24V AC, 50Hz control voltage and integrated 1 NO + 1 NC auxiliary contacts, the 3RT2327-1AB00 ensures versatile control and monitoring capabilities. Its compact S0 size and convenient screw terminals simplify installation in control panels and electrical systems. Engineered to meet IEC 60947 standards, this contactor delivers exceptional operational reliability and safety.

Key Features & Function

• 4-Pole AC-1 Switching: Optimized for switching resistive and non-inductive loads (e.g., heating, lighting, parallel capacitor banks) in accordance with AC-1 utilization category.
• High Current Rating: Handles up to 50 Amperes at 400V / 40°C, providing ample capacity for demanding applications.
• 24V AC Control Voltage: Standardized 24V AC, 50Hz coil ensures compatibility with common control circuits.
• Integrated Auxiliary Contacts: Comes equipped with 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contact for feedback, interlocking, and control circuit integration.
• Screw Terminals: Reliable and straightforward screw terminal connections for main and auxiliary circuits, ensuring secure wiring.
• Compact S0 Size: Space-saving design for efficient panel layout and installation.
• Modular Design: Supports expansion with additional auxiliary switches and surge suppressors (ordered separately) for enhanced functionality.
• High Contact Reliability: Auxiliary contacts are specifically designed for low-voltage/low-current applications (up to 110V / 100mA), suitable for solid-state circuits.

Benefit

• Reliable Performance: Built to IEC 60947 standards, ensuring consistent and safe operation in industrial environments.
• Versatile Application: Suitable for four-pole switching of weak or non-inductive loads, disconnecting loads or power generation plants from the grid, and transfer switching.
• Enhanced Safety: Designed with comprehensive protection considerations for short-circuit, overload, and overvoltage, promoting system integrity.
• Easy Integration: Compact size and standard screw terminals facilitate quick and straightforward installation into existing or new control systems.
• Flexible Control: Integrated auxiliary contacts and expandability options provide extensive possibilities for control and monitoring.
• Durable Construction: Siemens’ renowned quality ensures long-term reliability and reduced maintenance needs.

Protection of Device Connection

• Main Connections: Requires suitable short-circuit and overload protection. Refer to the technical product data sheet or configuration manuals for detailed guidance on free-standing contactors or device combinations (contactor with overload relay/circuit breaker).
• Auxiliary Connections: Short-circuit and overload protection information available in the technical product data sheet.
• Control Supply Voltage: Protection requires consideration of relevant standards, cable dimensioning, and suitable power supply selection (e.g., current-limiting function) accounting for inrush and holding currents. Miniature circuit breakers or circuit breakers for equipment can be used.
• Overvoltage Protection: The 3RT2327-1AB00 can be retrofitted with external surge suppressors (RC elements, varistors, diodes) for coil damping (ordered separately).

Connection Methods:

• Main Circuit: Screw terminals (convenient plug-in design for device connector).
• Auxiliary and Control Circuit: Screw terminals.

Motor Protection

• Can be combined with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays for overload protection.

Operating Mechanism:

• Conventional AC operating mechanism. Control via A1-A2 connections.