Siemens SIRIUS 3RT2346-1NB30-4AA0 Power Contactor AC-3, 95A, 45kW, 4-Pole, 20-33V AC/DC Original Brand New

Overview

The Siemens SIRIUS 3RT2346-1NB30-4AA0 is a high-performance 4-pole power contactor designed for switching AC-3 loads up to 95 A (45 kW at 400 V). Part of the robust SIRIUS 3RT23 series, this contactor offers exceptional reliability and a wide range of applications, including the switching of weak or non-inductive loads (AC-1), disconnecting loads or power generation plants from the grid, and transfer switching. Its compact Size S3 design and integrated varistor for surge suppression make it a versatile and dependable choice for industrial control systems.

Key Features & Function

• High Power Rating: Capable of switching 95 A (AC-3) and 45 kW at 400 V, suitable for demanding motor control applications and resistive loads.
• 4-Pole Configuration: Provides four main power poles for comprehensive circuit control.
• Wide Operating Voltage: Features a universal 20-33 V AC/DC control supply voltage (50/60 Hz), offering flexibility in control circuit design.
• Integrated Varistor: Comes with a pre-installed varistor for effective damping of opening surges in the coil, enhancing product longevity and system stability.
• Auxiliary Contacts: Includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contact for feedback and control circuit integration. These contacts are highly reliable, even for low voltages (≤ 110 V) and currents (≤ 100 mA), making them ideal for solid-state circuits.
• Screw Terminals: Equipped with robust screw terminals for secure and straightforward wiring of both main and auxiliary circuits.
• Compact Size S3: Optimized for space-saving installation within control panels.
• Compliance: Manufactured in accordance with international standards, including IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches), ensuring safety and interoperability.

Benefit

• Enhanced System Reliability: The integrated varistor protects the control coil from voltage spikes, contributing to a more stable and reliable operation of your electrical system.
• Flexible Application: Suitable for a broad spectrum of applications, from general-purpose switching of non-inductive loads to specific motor control tasks, and grid connection/disconnection.
• Easy Integration: Standardized design, versatile control voltage, and readily available auxiliary contacts simplify integration into new or existing control panels.
• Robust Construction: Built to Siemens’ high-quality standards, ensuring a long mechanical service life and reliable performance in demanding industrial environments.
• Simplified Protection: Designed for easy integration with Siemens SIRIUS 3RU2 thermal overload relays or 3RB3 electronic overload relays for comprehensive motor protection.
• User-Friendly Installation: Screw terminals offer a secure and well-understood connection method, simplifying installation and maintenance.

Application

The Siemens 3RT2346-1NB30-4AA0 power contactor is ideal for various industrial applications, including:

• Switching of non-inductive or weakly inductive loads (AC-1)
• Motor control and starting (AC-3)
• Disconnecting power generation plants or other loads from the electrical grid
• Transfer switching applications
• Industrial automation and control panels

Accessories and Protection:

For comprehensive protection and expanded functionality, consider integrating the 3RT2346-1NB30-4AA0 with:

• Overload Protection: Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays.
• Auxiliary Switches: Additional instantaneous auxiliary switches can be easily mounted for expanded control circuit options.
• Surge Suppressors: While a varistor is integrated, additional surge suppressors (RC elements, diodes) are available as accessories for extreme conditions if required for other circuits.

For more Siemens SIRIUS products and industrial automation solutions, visit Turll.