Siemens 3RT1066‑6SF36‑3PA0 Power Contactor 300 A AC‑3e/AC‑3, 160 kW,  400 V, 3‑Pole, 24 V DC, Electronic Drive Original Brand New

Overview

The Siemens 3RT1066‑6SF36‑3PA0 is a heavy‑duty 3‑pole power contactor from Siemens’ SIRIUS 3RT family engineered for demanding industrial applications. Rated for AC‑3e/AC‑3 at 300 A and up to 160 kW at 400 V, it features an electronic main drive, busbar connection for the main circuit and screw‑terminals for control/auxiliary circuits. It supports control voltage from AC/DC 96‑127 V and includes a dedicated 24 V DC PLC input (F‑PLC) for integration into modern automation systems.

Key Functions & Features

• Rated operational current AC‑3 at 400 V: 300 A.

• Rated operational power: 160 kW at 400 V (AC‑3).

• Control voltage (coil): AC/DC 96‑127 V, operating range factor 0.8‑1.1.

• PLC input: 24 V DC (0.8‑1.1).

• Auxiliary contacts: 2 NO + 2 NC, permanently mounted.

• Connection style: main circuit via busbar; auxiliary/control circuits via screw terminals.

• Size S10, 3‑pole design for heavy industrial switching.

• Designed for integration into motor control centres (MCCs), large three‑phase motors, resistive loads, and safety‑related switching due to F‑PLC input capability.

Benefit

• High Capacity & Reliability: With 300 A current rating and 160 kW power capability, this contactor handles large motors and heavy loads reliably.

• Modern Control Integration: The dedicated 24 V DC PLC input allows seamless integration into automated and PLC‑driven systems, enabling fail‑safe and advanced control architectures.

• Versatile Control Voltage: Supports AC or DC coil control (96‑127 V), giving flexibility in diverse control environments.

• Robust Construction: Busbar main circuit connection and screw‑terminal auxiliary/control circuits support safe, secure installation in panel boards and distribution systems.

• Future‑Ready: Part of Siemens’ SIRIUS family, this contactor is designed for long life and compatibility with existing industrial frameworks, making upgrades or replacements smooth.

Application

Ideal for use in:

• Large three‑phase motors (pumps, compressors, fans)

• Industrial heating or resistive elements

• Main power distribution boards and motor control centres (MCCs)

• Automation systems where PLC‑based control and fail‑safe inputs are required

• Systems requiring reliable heavy‑duty switching under AC‑3/AC‑3e conditions

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