Siemens 3RT2047-1NB34-3MA0 Power Contactor S3, 110A, 2NO+2NC, AC/DC Control Original Brand New

Overview

The Siemens 3RT2047-1NB34-3MA0 is a high-performance power contactor engineered for reliable switching of electric motors and other loads in industrial applications. This robust 3-pole contactor is rated for 110 A (AC-3e/AC-3) at 400 V, making it suitable for controlling motors up to 55 kW. Its key features include a wide-range 20-33 V AC/DC control voltage, an integrated varistor for surge suppression, and a full set of auxiliary contacts (2 NO + 2 NC) for advanced control and signaling. Designed for screw terminal connections and a compact S3 size, this contactor offers secure, reliable, and space-saving installation.

Benefit

• High Performance & Reliability: Engineered for demanding industrial environments, ensuring long-term operational stability.
• Versatile Control: The wide-range 20-33 V AC/DC control voltage allows for flexible integration into various control systems.
• Enhanced Protection: Integrated varistor protects the coil and surrounding circuitry from voltage spikes and surges, extending the lifespan of the contactor.
• Flexible Integration: The 2 NO + 2 NC auxiliary contacts provide comprehensive signaling and interlock capabilities for complex control circuits.
• Easy Installation: Screw terminals ensure a secure and straightforward wiring process.
• Space-Saving Design: The compact S3 size is ideal for panel builders and system integrators where cabinet space is at a premium.

Function

• Motor Switching: Safely and efficiently switches electric motors on and off.
• Load Control: Controls the power supply to various resistive and inductive loads.
• Automation: Integrates seamlessly into automated systems for remote and programmed operation.
• Interlocking: The captive auxiliary switch enables critical interlocking functions to prevent unsafe operations.
• Surge Suppression: Built-in varistor protects the control circuit from electrical noise and voltage spikes.

Technical Specification

• Product Number: 3RT2047-1NB34-3MA0
• Product Type: Power Contactor
• Rated Current (AC-3e/AC-3): 110 A
• Rated Power (at 400 V): 55 kW
• Number of Poles: 3
• Control Voltage: 20-33 V AC/DC, 50/60 Hz
• Auxiliary Contacts: 2 Normally Open (NO) + 2 Normally Closed (NC)
• Terminal Type: Screw Terminal
• Size: S3
• Features: Integrated varistor, captive auxiliary switch

Application

• Industrial machinery control
• Pump and fan motor control
• HVAC systems
• Conveyor systems
• Power distribution panels

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