Siemens 3RT2046-3SF30 SIRIUS Power Contactor, 95A, 45kW (400V), 83-150V AC/DC, Size S3, Spring-Loaded Original Brand New

Overview

The Siemens 3RT2046-3SF30 is a high-performance, 3-pole SIRIUS power contactor designed for reliable switching of motors and heavy electrical loads up to $45\text{ kW}$ at $400\text{ V}$ (or $95\text{ A}$ AC-3e/AC-3). As part of the SIRIUS modular system, this size S3 contactor features an efficient, universal AC/DC coil voltage of $83\text{–}150\text{ V}$ with an integrated varistor for surge suppression, ensuring coil protection and reliable operation. It is perfectly suited for use with PLCs and electronic controllers due to its F-PLC-IN (Fail-Safe PLC Input) specification and convenient spring-loaded control and auxiliary terminals.

Benefit

• Reliable Motor Control: Rated at $95\text{ A}$ and $45\text{ kW}$, ideal for switching high-efficiency IE2, IE3, and IE4 motors.
• Universal Operation: Wide-range $83\text{–}150\text{ V}$ AC/DC coil voltage simplifies stock-keeping and offers flexibility in control systems.
• Enhanced Safety & Longevity: Integrated varistor protects the coil from damaging voltage surges, extending product life and ensuring stable control.
• Fast, Secure Wiring: Spring-loaded terminals on the control and auxiliary circuits allow for quick, vibration-proof, and maintenance-free wiring, reducing installation time.
• PLC Compatibility: F-PLC-IN (Fail-Safe PLC Input) design ensures seamless and compliant integration with modern safety-related PLC systems.
• Space-Saving Design: Part of the compact SIRIUS modular system, optimizing control cabinet space.

Function

The 3RT2046-3SF30 functions as an electromechanical switching device used to control an electrical power circuit. It primarily:

1. Switches Motors: Used for starting, stopping, and controlling the direction of three-phase electric motors up to $45\text{ kW}$.
2. Switches Resistive Loads: Capable of controlling resistive loads (AC-1) with a thermal current rating of up to $130\text{ A}$.
3. Interfaces Control and Power: Acts as the critical link between the low-voltage control signal (from a PLC or push button) and the high-power main circuit.

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