Siemens SIRIUS 3RT2046-1NB30-0CC0 Power Contactor, S3, 95A, 45kW, AC/DC 20-33V Original Brand New

Overview

The Siemens SIRIUS 3RT2046-1NB30-0CC0 Power Contactor is a high-performance, size S3 switching device from the SIRIUS 3RT2 series, engineered for reliable control of motors and other high-capacity electrical loads in industrial automation and control systems. This 3-pole contactor is rated for a substantial 95 A at AC-3e/AC-3 and a power output of 45 kW at 400 V.

A key feature is its universal wide-range control voltage of 20-33 V AC/DC, which simplifies inventory and wiring. With an integrated varistor for surge suppression and essential auxiliary contacts (1 NO + 1 NC), it offers superior protection and diagnostic capabilities. Its modern design is communication-capable, ready for integration into smart control networks via optional communication modules.

Key Technical Specification

• Product Number: 3RT2046-1NB30-0CC0
• Manufacturer: Siemens
• Series: SIRIUS 3RT2
• Contactor Size: S3
• Poles: 3-pole
• Rated Operational Current (AC-3e/AC-3): Ie​=95 A at $400\text{ V}$
• Rated Operational Power (AC-3): $P=45\text{ kW}$ at $400\text{ V}$
• Control Supply Voltage: Wide-range $20\text{ – }33\text{ V AC/DC}$ (50/60 Hz)
• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
• Terminal Type: Screw terminal
• Protection: Integrated varistor for coil overvoltage damping
• Special Feature: Communication-capable for smart integration

Benefit & Features

1. High Reliability & Durability: With a mechanical service life of up to 10 million switching cycles, this 95A power contactor ensures long-term, dependable operation in demanding environments.
2. Universal Control Voltage: The wide $20\text{ – }33\text{ V AC/DC}$ coil voltage simplifies design, purchasing, and maintenance, making it suitable for both AC and DC control systems.
3. Enhanced Protection: An integrated varistor provides robust surge protection directly on the coil, protecting sensitive control components and extending the contactor’s lifespan.
4. Smart System Integration: Being communication-capable, it can easily be equipped for connection to modern industrial networks, enabling advanced diagnostics, remote control, and energy management.
5. Standard Industrial Auxiliary Contacts: Built-in $1\text{ NO }+1\text{ NC}$ auxiliary contacts offer immediate feedback on the main contactor’s status for interlocking and control circuits.
6. Ease of Installation: Standard size S3 with robust screw terminals for secure and straightforward wiring of main and auxiliary circuits.

Application

The Siemens 3RT2046-1NB30-0CC0 is ideal for switching 3-phase AC motors and other resistive or highly inductive loads across various sectors, including:

• Pumps and Ventilation Systems
• Conveyor Systems and Material Handling
• Machine Tools and Production Lines
• HVAC and Refrigeration Systems
• Industrial Power Distribution and Capacitor Banks

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