Siemens 3RT2348-1AP00 SIRIUS Contactor AC-1, 160A, 4-Pole, 230V AC Coil, Screw Terminal, Size S3 Original Brand New

Siemens 3RT2348-1AP00 SIRIUS Contactor for AC-1 Application

The Siemens 3RT2348-1AP00 is a robust and reliable SIRIUS power contactor designed for switching non-inductive or weakly inductive loads (AC-1) up to 160 Amperes at 400 V / 40 °C. This 4-pole contactor features a 230 V AC, 50 Hz control coil, ensuring consistent performance in industrial applications. Equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, it provides versatile control options, all easily connected via secure screw terminals. Its compact S3 size makes it suitable for various control panel configurations.

Overview

The Siemens 3RT2348-1AP00 contactor is part of the trusted SIRIUS family, engineered to meet stringent international standards for industrial control gear. It is ideal for applications requiring the reliable disconnection of loads, power generation plants from the grid, and transfer switching. This model excels in scenarios where four-pole switching of AC-1 loads is critical.

Benefit

• Reliable Performance: Built to IEC standards (IEC 60947-1, IEC 60947-4-1, IEC 60947-5-1), ensuring high operational reliability and safety.
• Versatile Application: Perfectly suited for switching weak or non-inductive loads (AC-1), load disconnection, and transfer switching.
• Integrated Auxiliary Contacts: The included 1 NO + 1 NC auxiliary contacts offer immediate feedback and control possibilities without additional modules.
• Secure Connections: Robust screw terminals provide a strong and dependable connection for main, auxiliary, and control circuits.
• Easy Integration: Designed for straightforward integration into existing control systems and panels.
• Durable Construction: Siemens’ renowned quality ensures a long service life and high operational stability.

Function

• Main Circuit Switching: Efficiently switches main circuits with a rated operational current of 160 A for AC-1 applications.
• Auxiliary Switching: The integrated auxiliary contacts (1 NO + 1 NC) allow for status indication, interlocking, and control circuit functions.
• Overload Protection Integration: Designed for seamless integration with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays for comprehensive motor protection (when used in relevant applications).
• Surge Suppression Compatibility: Can be retrofitted with external surge suppressors (RC elements, varistors, diodes) for coil damping, protecting the control circuit from voltage spikes.

Standards & Protection:

The Siemens 3RT2348-1AP00 contactor adheres to major international standards including IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches), ensuring compliance and safety in diverse industrial environments.

Protection Considerations:

• Main Connections: Requires suitable external short-circuit and overload protection. Refer to the technical product data sheet and configuration manuals for detailed guidance on device combinations (e.g., contactor with overload relay or circuit breaker).
• Auxiliary Connections: Auxiliary contacts also require appropriate short-circuit and overload protection.
• Control Supply Voltage: Protection for the 230 V AC control circuit should consider relevant standards for control panel configuration, cable dimensioning, and the contactor’s load characteristics (inrush current, holding power). Use of suitable power supplies with current-limiting functions and protection devices (e.g., miniature circuit breakers) is recommended.
• Overvoltage Protection: While 3RT23 contactors are supplied without inherent coil damping, they can be easily retrofitted with external surge suppressors (RC elements, varistors, diodes) to protect against opening surges in the coil. Note that damping may slightly increase break and delay times.

Connection Methods:

• Main Circuit: Features robust screw terminals with a box terminal design. For 3RT234 models, direct connection to the connecting bar is possible with cable lugs after removing the box terminal.
• Auxiliary and Control Circuit: Utilizes reliable screw terminals for secure wiring.

Electromagnetic Compatibility (EMC):

The contactor meets the requirements for environment category A, ensuring reliable operation in industrial settings with typical electromagnetic interference. For applications involving frequency converters, specific configuration notes in the Equipment Manual must be observed.

Contact Reliability of Auxiliary Contacts:

The auxiliary contacts of the 3RT23 contactors provide a high level of contact reliability, particularly suitable for switching low voltages (≤ 110 V) and low currents (≤ 100 mA), including solid-state circuits with currents ≥ 1 mA at 17 V and higher.

Operating Mechanism:

This 3RT23 contactor features a conventional AC operating mechanism, specifically designed for 230 V AC, 50 Hz control supply voltage connected via A1-A2.

Auxiliary Contact Expansion:

The 3RT2348-1AP00 basic unit includes two integrated auxiliary contacts (1 NO + 1 NC). Further expansion with additional auxiliary switches is possible, adhering to the permissible configuration limits. Detailed information on fitting auxiliary switches is available in the respective documentation.

Accessories and Spare Parts:

A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactor series to enhance functionality, facilitate maintenance, and expand capabilities. Refer to the SIRIUS 3RT2 contactors accessories catalog for full details.

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