Siemens 3RT1076-6NP36 SIRIUS Power Contactor, 500A, 250kW, Electronic Drive Original Brand New

Overview

The Siemens 3RT1076-6NP36 is a robust, high-performance SIRIUS power contactor engineered for switching motors and heavy-duty industrial loads. Part of the SIRIUS modular system, this 3-pole contactor is rated for $500\text{ A}$ (AC-3e/AC-3) and $250\text{ kW}$ at $400\text{ V}$, providing dependable and efficient operation in demanding environments. Its standout feature is the electronic drive with a wide control voltage range of $200\text{-}277\text{ V}$ (AC $50\text{-}60\text{ Hz}$/DC) and an integrated $24\text{ V DC PLC input}$, offering seamless integration into automated control systems.

Key Features & Technical Specification

• Product Number: 3RT1076-6NP36
• Contactor Type: Power Contactor (SIRIUS 3RT1 series)
• Rated Operational Current (Ie​): $500\text{ A}$ (at $400\text{ V}$, AC-3e/AC-3)
• Rated Operational Power (Pe​): $250\text{ kW}$ (at $400\text{ V}$)
• Poles: 3-pole main circuit
• Control Voltage (Uc​): $200\text{-}277\text{ V}$ AC ($50\text{-}60\text{ Hz}$) / DC (Wide Voltage Range)
• Drive Type: Electronic Drive with $\text{PLC}$ Input ($24\text{ V DC}$)
• Auxiliary Contacts: $2\text{ NO}$ (Normally Open) $+2\text{ NC}$ (Normally Closed)
• Main Circuit Connection: Busbar
• Control & Auxiliary Circuit Connection: Screw Terminal
• Contactor Size: S12

Benefit

• Enhanced Reliability: The electronic drive mechanism offers consistent, long-term switching performance, minimizing downtime and maintenance.
• Seamless Automation Integration: The dedicated $\text{24 V DC PLC}$ input allows for direct and easy connection to modern programmable logic controllers, simplifying complex control system design.
• High Power Handling: Capable of safely managing $\text{500 A}$ and motors up to $\text{250 kW}$, ideal for large-scale industrial machinery and high-current applications.
• Flexible Control: The wide $200\text{-}277\text{ V}$ AC/DC control voltage range simplifies inventory and ensures compatibility across various supply voltages.
• Clear Status Indication: Built-in $2\text{ NO}+2\text{ NC}$ auxiliary contacts provide essential feedback for system monitoring and interlocking circuits.

Function / Application

The Siemens 3RT1076-6NP36 power contactor is primarily designed for:

• Switching 3-phase $\text{AC}$ motors (AC-3/AC-3e duty) in applications like pumps, fans, compressors, and conveyors.
• Use as a disconnecting and protective element in industrial power distribution systems.
• Integration into automated control panels where precise, high-current switching is required and $\text{PLC}$ control is standard.
• Heavy-duty applications requiring busbar connections for the main circuit.

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