3RT2448-1NB30

Description

Overview

The Siemens 3RT2448-1NB30 is a high-performance 3-pole contactor designed for demanding industrial control applications. Engineered to deliver reliable switching of electrical loads, this AC-1 contactor supports up to 160 A at 690 V, making it suitable for heavy-duty systems. It features a 20–33 V AC/DC control voltage, an integrated varistor for built-in surge protection, and robust terminal designs for secure connections. As part of Siemens’ trusted industrial control lineup, this model ensures long-lasting performance, high operational efficiency, and maximum installation flexibility.

Benefit

• High Electrical Endurance: Rated for 160 A under AC-1 duty, ideal for resistive loads and industrial power circuits.

• Integrated Varistor: Provides surge and transient voltage protection for enhanced system safety and component longevity.

• Flexible Control Voltage: Supports both AC and DC control between 20–33 V, simplifying installation and inventory management.

• Durable Siemens Engineering: Built to withstand heavy-duty industrial environments and continuous operation.

• Reliable Auxiliary Feedback: Includes 1 NO + 1 NC auxiliary contacts for reliable status signaling and circuit integration.

Function

• Switching and controlling AC-1 resistive loads up to 160 A

• Starting, stopping, and protecting motor circuits with reliable contact performance

• Integration into automation and control panels requiring 3-pole switching

• Protection against voltage spikes via built-in varistor

• Secure main circuit wiring with box terminals

• Stable control and auxiliary connections using screw-type terminals

Technical Specification

• Product Number: Siemens 3RT2448-1NB30

• Type: Contactor

• Utilization Category: AC-1

• Rated Current: 160 A

• Rated Voltage: 690 V (at 40 °C)

• Number of Poles: 3-pole

• Control Voltage: 20–33 V AC/DC, 50/60 Hz

• Integrated Varistor: Yes

• Auxiliary Contacts: 1 NO + 1 NC

• Main Circuit Terminal: Box terminal

• Control & Auxiliary Terminals: Screw terminal

• Size: S3

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