3RT2446-1NB30

Description

Overview

The Siemens 3RT2446-1NB30 is a reliable AC-1 contactor designed for heavy-duty industrial applications. With a rated current of 140 A and a voltage capacity of 690 V at 40 °C, it ensures efficient switching for three-phase loads. The contactor features an integrated varistor for protection against voltage spikes, and comes with auxiliary contacts (1 NO + 1 NC) to support additional control functions. Both the main and control circuits are designed for easy installation, offering box terminals for the main circuit and screw terminals for control and auxiliary circuits.

Key Features & Benefits

1. High Current Capacity:
Handles up to 140 A, suitable for heavy-duty industrial applications.

2. Robust Voltage Rating:
Supports 690 V / 40 °C for reliable performance under high electrical load.

3. Three-Pole Design:
Ideal for three-phase AC systems, ensuring smooth operation and safety.

4. Integrated Varistor Protection:
Protects against voltage spikes and prolongs device lifespan.

5. Auxiliary Contacts (1 NO + 1 NC):
Provides flexible control options for complex automation systems.

6. Easy Installation:
Box terminals for the main circuit and screw terminals for control circuits ensure fast, secure installation.

7. Compact & Durable:
Size S3 ensures space-saving installation without compromising performance.

Function

The Siemens 3RT2446-1NB30 functions as a reliable switch in AC circuits, enabling safe connection and disconnection of heavy loads. It protects your system with an integrated varistor while offering auxiliary control options for automation and monitoring purposes.

Technical Specification

• Type: Contactor AC-1

• Rated Current: 140 A

• Rated Voltage: 690 V / 40 °C

• Poles: 3

• 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 Circuit Terminal: Screw terminal

• Size: S3

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